Modafinil: Drug information

For additional information see "Modafinil: Patient drug information" and "Modafinil: Pediatric drug information"

For abbreviations, symbols, and age group definitions show table

Brand Names: US

Provigil

Brand Names: Canada

Alertec;
APO-Modafinil;
Auro-Modafinil;
JAMP Modafinil;
Mar-Modafinil;
TEVA-Modafinil

Pharmacologic Category

Central Nervous System Stimulant

Dosing: Adult

Cancer-related fatigue, severe

Cancer-related fatigue, severe (in patients receiving active treatment) (off-label use): Oral: Initial: 100 mg once daily for 3 days, followed by 200 mg once daily during active treatment; refer to protocol for further details (Ref).

Hypersomnia, idiopathic

Hypersomnia, idiopathic (off-label use): Oral: 200 mg as a single daily dose in the morning (Ref). Based on response and tolerability, may increase dose up to 200 mg twice daily (eg, morning and midday) or 400 mg as a single daily dose in the morning; however, evidence is limited for doses >200 mg/day (Ref).

Major depressive disorder

Major depressive disorder (antidepressant augmentation) (off-label use): Oral: Initial: 100 mg/day for 3 to 7 days, then increase to 200 mg/day; further adjust dose based on response and tolerability up to 400 mg/day (Ref).

Multiple sclerosis–related fatigue

Multiple sclerosis–related fatigue (off-label use): Oral: Initial: 100 mg/day; may increase daily dose based on response and tolerability in 100 mg increments at intervals ≥1 week up to 200 mg/day in 1 or 2 divided doses (morning and noon). Doses up to 400 mg/day have been evaluated; however, doses >200 mg/day have not demonstrated greater efficacy (Ref).

Narcolepsy-related or obstructive sleep apnea–related excessive daytime sleepiness

Narcolepsy-related or obstructive sleep apnea–related excessive daytime sleepiness: Oral: Initial: 200 mg as a single daily dose in the morning. Note: Doses up to 400 mg once daily have been well tolerated, but there is no consistent evidence that this dose confers additional benefit.

Parkinson disease–related excessive daytime sleepiness

Parkinson disease–related excessive daytime sleepiness (off-label use): Oral: Initial: 100 mg once daily; may increase dose after 1 week to 200 mg/day (Ref).

Shift work sleep disorder–related excessive daytime sleepiness

Shift work sleep disorder–related excessive daytime sleepiness: Oral: Initial: 200 mg as a single dose ~1 hour prior to start of work shift.

Dosing: Kidney Impairment: Adult

The renal dosing recommendations are based upon the best available evidence and clinical expertise. Senior Editorial Team: Bruce Mueller, PharmD, FCCP, FASN, FNKF; Jason A. Roberts, PhD, BPharm (Hons), B App Sc, FSHP, FISAC; Michael Heung, MD, MS.

Altered kidney function: Oral: No dosage adjustment necessary for any degree of kidney impairment (primarily hepatically eliminated) (Ref).

Hemodialysis, intermittent (thrice weekly): Dialyzability unknown: Oral: No dosage adjustment necessary; when scheduled dose falls on dialysis days, administer after hemodialysis (Ref).

Peritoneal dialysis: Dialyzability unknown: Oral: No dosage adjustment necessary (Ref).

CRRT: Oral: No dosage adjustment necessary (Ref).

PIRRT (eg, sustained, low-efficiency diafiltration): Oral: No dosage adjustment necessary (Ref).

Dosing: Hepatic Impairment: Adult

Mild to moderate hepatic impairment: There are no dosage adjustments provided in the manufacturer's labeling.

Severe hepatic impairment: Reduce dose to one-half of that recommended for patients with normal liver function.

Dosing: Older Adult

Consider initiating at lower doses.

Dosing: Pediatric

(For additional information see "Modafinil: Pediatric drug information")

Attention-deficit/hyperactivity disorder; refractory

Attention-deficit/hyperactivity disorder (ADHD); refractory: Limited data available:

Note: Due to reports of serious dermatologic adverse effects and psychiatric events in children, modafinil should only be used if first- and second-line treatments have failed and the benefits outweigh the risks.

Children ≥5 years and Adolescents ≤17 years:

<30 kg: Oral: Initial: 100 mg once daily; increase daily dose in 100 mg increments every 3 to 14 days as needed; usual dose: 200 to 300 mg once daily (Ref).

≥30 kg: Oral: Initial: 100 mg once daily; increase daily dose in 100 mg increments every 3 to 14 days as needed; usual dose: 300 to 400 mg once daily; maximum reported dose: 500 mg/dose. Doses ≥400 mg/day have also been divided into two doses separated by 4 to 5 hours (Ref).

Dosing: Kidney Impairment: Pediatric

There are no dosage adjustments provided in the manufacturer's labeling (has not been studied); use with caution.

Dosing: Hepatic Impairment: Pediatric

There are no pediatric-specific recommendations; based on experience in adult patients, dosing adjustment is suggested.

Adverse Reactions (Significant): Considerations

Cardiovascular effects

Cardiovascular events, including chest pain, hypertension, palpitations, and tachycardia have been reported with modafinil. Serious cardiovascular events, including cardiac arrhythmias (eg, ventricular premature contractions and torsades de pointes), cardiomyopathy, and heart failure have also been reported (Ref).

Mechanism: Not clearly established; related to the pharmacologic action; a sympathomedullary stimulating effect has been suggested (Ref). Palpitations due to ventricular premature contractions may also occur as a result of sympathetic stimulation, though the exact mechanism is unknown (Ref).

Onset: Rapid; increases in heart rate and blood pressure have been reported within 2 hours of modafinil administration (Ref).

Risk factors:

• Patients with preexisting cardiovascular disease and/or structural heart disease (eg, mitral valve prolapse, left ventricular hypertrophy) (Ref)

• History of mitral valve prolapse syndrome with CNS stimulants

• Single doses ≥300 mg; total daily doses >400 mg

• Concomitant use with monoamine oxidase inhibitors (MAOIs) (Ref)

Hypersensitivity reactions (immediate and delayed)

Immediate (eg, angioedema, anaphylaxis) and delayed hypersensitivity reactions have been reported with modafinil (Ref). Delayed hypersensitivity reactions have also been reported with modafinil and may include skin rash and fixed drug eruption (Ref) as well as serious reactions, such as multi-organ hypersensitivity reactions and severe cutaneous adverse reactions (SCARs) (eg, Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis, and drug rash with eosinophilia and systemic symptoms) (Ref). Manifestations of multi-organ hypersensitivity reactions are varied and may include fever and rash associated with organ system involvement, eosinophilic myocarditis, hepatitis, liver function test abnormalities, hematologic abnormalities, pruritus, and asthenia (Ref).

Mechanism:

Immediate hypersensitivity reactions: Non–dose-related, immunologic, IgE-mediated. (Ref).

Delayed hypersensitivity reactions: Non–dose-related, immunologic, T-cell mediated (Ref).

Onset:

Immediate hypersensitivity reactions: Rapid; usually occurs within 1 hour of administration (Ref).

Delayed hypersensitivity reactions: Varied; SJS has been reported 16 to 21 days after initiating modafinil (Ref). Fixed drug eruptions usually occur 6 to 10 days after first drug exposure and within 3 days of subsequent exposures; symptoms have been reported within 12 hours after a single dose of modafinil (Ref).

Psychiatric effects

New onset mania and exacerbation of psychotic or manic symptoms (eg, aggressive behavior, delusion, hallucination, psychomotor agitation, psychosis) have been reported with modafinil in pediatric and adult patients (Ref). Suicidal ideation has also been reported with modafinil (Ref), although further data is needed to determine causal relationship between modafinil and attempted suicide.

Mechanism: Not clearly established; modafinil-induced inhibition of GABA and dopamine reuptake may lead to psychosis (Ref).

Onset: Rapid: Psychotic symptoms have been reported within days of treatment initiation (Ref).

Risk factors:

• History of psychosis or psychiatric disorders (Ref)

• Sleep disruptions in shift workers (Ref)

Adverse Reactions

The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified. Adverse reactions reported in adults unless otherwise indicated.

>10%:

Gastrointestinal: Abdominal pain (children: 12% [Greenhill 2006]), decreased appetite (children: 16% [Biederman 2005]), nausea (11%)

Nervous system: Headache (children: 20% [Biederman 2005]; adults: 34%)

1% to 10%:

Cardiovascular: Chest pain (3%) (table 1)Chest Pain, edema (1%), hypertension (3%) (table 2)Hypertension, palpitations (2%) (table 3)Palpitations, tachycardia (2%) (table 4)Tachycardia, vasodilation (2%)

**Modafinil: Adverse Reaction: Chest Pain**
Drug (Modafinil)	Placebo	Dose	Number of Patients (Modafinil)	Number of Patients (Placebo)
3%	1%	200, 300, or 400 mg once daily	934	567

**Modafinil: Adverse Reaction: Hypertension**
Drug (Modafinil)	Placebo	Dose	Number of Patients (Modafinil)	Number of Patients (Placebo)
3%	1%	200, 300, or 400 mg once daily	934	567

**Modafinil: Adverse Reaction: Palpitations**
Drug (Modafinil)	Placebo	Dose	Number of Patients (Modafinil)	Number of Patients (Placebo)
2%	1%	200, 300, or 400 mg once daily	934	567

**Modafinil: Adverse Reaction: Tachycardia**
Drug (Modafinil)	Placebo	Dose	Number of Patients (Modafinil)	Number of Patients (Placebo)
2%	1%	200, 300, or 400 mg once daily	934	567

Dermatologic: Diaphoresis (1%)

Endocrine & metabolic: Increased thirst (1%), weight loss (children 5% [Greenhill 2006])

Gastrointestinal: Anorexia (4%), constipation (2%), diarrhea (6%), dysgeusia (1%), dyspepsia (5%), flatulence (1%), oral mucosa ulcer (1%), xerostomia (4%)

Genitourinary: Urine abnormality (1%)

Hematologic & oncologic: Eosinophilia (1%)

Hepatic: Hepatic insufficiency (2%)

Nervous system: Agitation (1%), anxiety (5%), chills (1%), confusion (1%), depression (2%), dizziness (5%), drowsiness (2%), emotional lability (1%), hypertonia (1%), insomnia (5%), nervousness (7%), paresthesia (2%), tremor (1%), vertigo (1%)

Neuromuscular & skeletal: Back pain (6%), dyskinesia (1%), hyperkinetic muscle activity (1%)

Ophthalmic: Visual disturbance (1%)

Respiratory: Asthma (1%), epistaxis (1%), pharyngitis (4%), rhinitis (7%)

Frequency not defined: Hepatic: Increased gamma-glutamyl transferase, increased serum alkaline phosphatase

Postmarketing (any population):

Cardiovascular: Cardiac arrhythmia (including ventricular premature contractions and torsades de pointes) (EMA 2011, Multu 2021; Oskoolilar 2005), cardiomyopathy (EMA 2011), heart failure (EMA 2011)

Dermatologic: Erythema multiforme (EMA 2011), fixed drug eruption (Gaikwad 2012), skin rash (EMA 2011), Stevens-Johnson syndrome (Prince 2018), toxic epidermal necrolysis (EMA 2011)

Hematologic & oncologic: Agranulocytosis

Hypersensitivity: Anaphylaxis (EMA 2011), angioedema, (EMA 2011) drug reaction with eosinophilia and systemic symptoms (EMA 2011), multi-organ hypersensitivity reaction (EMA 2011)

Nervous system: Aggressive behavior (Ranjan 2005), delusion, hallucination (Hsieh 2010), irritability (Ranjan 2005), mania (Mosholder 2009), psychosis (including psychomotor agitation) (Flavell 2021; Mosholder 2009), suicidal ideation (Block 2006)

Contraindications

Known hypersensitivity to modafinil, armodafinil, or any component of the formulation.

Canadian labeling: Additional contraindications (not in the US labeling): Patients in agitated states or with severe anxiety; pregnancy; females who may become pregnant.

Warnings/Precautions

Disease-related concerns:

• Hepatic impairment: Use with caution in patients with hepatic impairment. Dosage reduction is recommended in patients with severe hepatic impairment.

• Renal impairment: Use with caution in patients with renal impairment.

• Seizure disorder: Limited information exists regarding the use of modafinil or other stimulants in patients with concomitant ADHD and seizure disorder. Whereas patients with ADHD are at an increased risk for seizure activity compared to the general population, a retrospective study using drug claims data showed that the use of stimulant medications was associated with a lower risk (Cortese 2013; Wiggs 2018). Manufacturers of some stimulants recommend discontinuing therapy if seizures occur.

• Sleep disorders: Appropriate use: The degree of sleepiness should be reassessed frequently; some patients may not return to a normal level of wakefulness. In obstructive sleep apnea, modafinil is indicated as treatment for excessive sleepiness and not for the underlying obstruction. If continuous positive airway pressure (CPAP) is the treatment of choice for a patient, a maximal effort to treat with CPAP for an adequate period of time should be made prior to initiating and during treatment with modafinil for excessive sleepiness.

• Tourette syndrome/tics: Use with caution in patients with Tourette syndrome or other tic disorders. Stimulants may exacerbate tics (motor and phonic) and Tourette syndrome; however, evidence demonstrating increased tics is limited. Evaluate for tics and Tourette syndrome prior to therapy initiation (AACAP [Murphy 2013]; Pliszka 2007).

Special populations:

• Pediatric: Modafinil is not FDA-approved for use in pediatrics for any indication. Serious skin reactions and psychiatric events have been observed in pediatric patients treated with modafinil. The serious nature of these adverse effects resulted in the FDA’s Pediatric Advisory Committee unanimously recommending that a specific warning against the use of modafinil in children be added to the manufacturer's labeling.

Dosage Forms: US

Excipient information presented when available (limited, particularly for generics); consult specific product labeling.

Tablet, Oral:

Provigil: 100 mg

Provigil: 200 mg [scored]

Generic: 100 mg, 200 mg

Generic Equivalent Available: US

Yes

Pricing: US

Tablets (Modafinil Oral)

100 mg (per each): $11.19 - $26.40

200 mg (per each): $16.93 - $39.94

Tablets (Provigil Oral)

100 mg (per each): $61.21

200 mg (per each): $92.49

Disclaimer: A representative AWP (Average Wholesale Price) price or price range is provided as reference price only. A range is provided when more than one manufacturer's AWP price is available and uses the low and high price reported by the manufacturers to determine the range. The pricing data should be used for benchmarking purposes only, and as such should not be used alone to set or adjudicate any prices for reimbursement or purchasing functions or considered to be an exact price for a single product and/or manufacturer. Medi-Span expressly disclaims all warranties of any kind or nature, whether express or implied, and assumes no liability with respect to accuracy of price or price range data published in its solutions. In no event shall Medi-Span be liable for special, indirect, incidental, or consequential damages arising from use of price or price range data. Pricing data is updated monthly.

Dosage Forms: Canada

Excipient information presented when available (limited, particularly for generics); consult specific product labeling.

Tablet, Oral:

Alertec: 100 mg

Generic: 100 mg

Controlled Substance

C-IV

Administration: Adult

Oral: In general, administer in dose in the morning.

Multiple sclerosis–related fatigue: With multiple sclerosis–related fatigue, may consider dividing doses between morning and noon in patients experiencing post-noon fatigue (Ref).

Shift work sleep disorder: Administer dose ~1 hour prior to start of work shift.

Administration: Pediatric

Oral: May be administered without regard to food; administer dose in the morning; for twice-daily dosing, separate doses by 4 to 5 hours; in pediatric trials, doses were administered in the morning and 4 to 5 hours later (midday) (Ref).

Medication Guide and/or Vaccine Information Statement (VIS)

An FDA-approved patient medication guide, which is available with the product information and at https://www.accessdata.fda.gov/drugsatfda_docs/label/2015/020717s037s038lbl.pdf, must be dispensed with this medication.

Use: Labeled Indications

Narcolepsy-related excessive daytime sleepiness: To improve wakefulness in adult patients with excessive sleepiness associated with narcolepsy.

Obstructive sleep apnea–related excessive daytime sleepiness: To improve wakefulness in adult patients with obstructive sleep apnea (OSA).

Shift work sleep disorder–related excessive daytime sleepiness: To improve wakefulness in adult patients with shift work sleep disorder (SWSD).

Use: Off-Label: Adult

Cancer-related fatigue, severe (in patients receiving active treatment); Hypersomnia, idiopathic; Major depressive disorder (antidepressant augmentation); Multiple sclerosis–related fatigue; Parkinson disease–related excessive daytime sleepiness

Metabolism/Transport Effects

Substrate of CYP3A4 (minor); Note: Assignment of Major/Minor substrate status based on clinically relevant drug interaction potential; Inhibits CYP2C19 (weak); Induces CYP3A4 (moderate)

Drug Interactions

Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the drug interactions program by clicking on the “Launch drug interactions program” link above.

Abemaciclib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Abemaciclib. Risk X: Avoid combination

Abiraterone Acetate: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Abiraterone Acetate. Risk C: Monitor therapy

Acalabrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Acalabrutinib. Risk C: Monitor therapy

Acebrophylline: May enhance the stimulatory effect of CNS Stimulants. Risk X: Avoid combination

Alcohol (Ethyl): May diminish the therapeutic effect of Modafinil. Risk X: Avoid combination

ALfentanil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ALfentanil. Management: If concomitant use of alfentanil and moderate CYP3A4 inducers is necessary, consider dosage increase of alfentanil until stable drug effects are achieved. Monitor patients for signs of opioid withdrawal. Risk D: Consider therapy modification

Alpelisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Alpelisib. Risk C: Monitor therapy

ALPRAZolam: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ALPRAZolam. Risk C: Monitor therapy

AmLODIPine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of AmLODIPine. Risk C: Monitor therapy

Antihepaciviral Combination Products: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Antihepaciviral Combination Products. Risk X: Avoid combination

Apremilast: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Apremilast. Risk C: Monitor therapy

Aprepitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Aprepitant. Risk C: Monitor therapy

ARIPiprazole: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ARIPiprazole. Risk C: Monitor therapy

ARIPiprazole Lauroxil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ARIPiprazole Lauroxil. Risk C: Monitor therapy

Artemether and Lumefantrine: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Artemether and Lumefantrine. Specifically, concentrations of dihydroartemisinin (DHA), the active metabolite of artemether may be decreased. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Artemether and Lumefantrine. Risk C: Monitor therapy

Atazanavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Atazanavir. Risk C: Monitor therapy

Atogepant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Atogepant. Management: For treatment of episodic migraine, the recommended dose of atogepant is 30 mg once daily or 60 mg once daily when combined with CYP3A4 inducers. When used for treatment of chronic migraine, use of atogepant with CYP3A4 inducers should be avoided. Risk D: Consider therapy modification

Atomoxetine: May enhance the hypertensive effect of Sympathomimetics. Atomoxetine may enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy

Atorvastatin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Atorvastatin. Risk C: Monitor therapy

Avacopan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Avacopan. Risk X: Avoid combination

Avanafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Avanafil. Risk X: Avoid combination

Avapritinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Avapritinib. Risk X: Avoid combination

Axitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Axitinib. Risk X: Avoid combination

Bedaquiline: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Bedaquiline. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Bedaquiline. Risk X: Avoid combination

Belumosudil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Belumosudil. Risk C: Monitor therapy

Benzhydrocodone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Benzhydrocodone. Specifically, the serum concentrations of hydrocodone may be reduced. Risk C: Monitor therapy

Bortezomib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Bortezomib. Risk C: Monitor therapy

Bosutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Bosutinib. Risk C: Monitor therapy

Brexpiprazole: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Brexpiprazole. Risk C: Monitor therapy

Brigatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Brigatinib. Management: Avoid concurrent use of brigatinib with moderate CYP3A4 inducers when possible. If combined, increase the daily dose of brigatinib in 30 mg increments after 7 days of treatment with the current brigatinib dose, up to maximum of twice the dose. Risk D: Consider therapy modification

Buprenorphine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Buprenorphine. Risk C: Monitor therapy

BusPIRone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of BusPIRone. Risk C: Monitor therapy

Cabozantinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cabozantinib. Risk C: Monitor therapy

Cannabinoid-Containing Products: May enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy

Cannabis: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cannabis. More specifically, tetrahydrocannabinol and cannabidiol serum concentrations may be decreased. Risk C: Monitor therapy

Capivasertib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Capivasertib. Risk X: Avoid combination

Capmatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Capmatinib. Risk X: Avoid combination

CarBAMazepine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of CarBAMazepine. Risk C: Monitor therapy

Cariprazine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cariprazine. Risk X: Avoid combination

Ceritinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ceritinib. Risk C: Monitor therapy

Clarithromycin: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Clarithromycin. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Clarithromycin. Management: Consider alternative antimicrobial therapy for patients receiving a CYP3A4 inducer. Drugs that enhance the metabolism of clarithromycin into 14-hydroxyclarithromycin may alter the clinical activity of clarithromycin and impair its efficacy. Risk D: Consider therapy modification

Clindamycin (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Clindamycin (Systemic). Risk C: Monitor therapy

CloBAZam: CYP2C19 Inhibitors (Weak) may increase serum concentrations of the active metabolite(s) of CloBAZam. CYP2C19 Inhibitors (Weak) may increase the serum concentration of CloBAZam. Risk C: Monitor therapy

CloZAPine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of CloZAPine. Risk C: Monitor therapy

Cobicistat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cobicistat. Risk C: Monitor therapy

Cobimetinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cobimetinib. Risk X: Avoid combination

Codeine: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Codeine. Risk C: Monitor therapy

Copanlisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Copanlisib. Risk C: Monitor therapy

Crizotinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Crizotinib. Risk C: Monitor therapy

CycloSPORINE (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of CycloSPORINE (Systemic). Risk C: Monitor therapy

Daclatasvir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Daclatasvir. Management: Increase the daclatasvir dose to 90 mg once daily if used with a moderate CYP3A4 inducer. Risk D: Consider therapy modification

Dapsone (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dapsone (Systemic). Risk C: Monitor therapy

Daridorexant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Daridorexant. Risk X: Avoid combination

Dasabuvir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dasabuvir. Risk X: Avoid combination

Dasatinib: CYP3A4 Inducers (Moderate) may increase the serum concentration of Dasatinib. Risk C: Monitor therapy

Deflazacort: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Deflazacort. Risk X: Avoid combination

Delavirdine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Delavirdine. Risk C: Monitor therapy

DexAMETHasone (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of DexAMETHasone (Systemic). Risk C: Monitor therapy

DiazePAM: CYP3A4 Inducers (Moderate) may decrease the serum concentration of DiazePAM. Risk C: Monitor therapy

Dienogest: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dienogest. Risk C: Monitor therapy

DilTIAZem: CYP3A4 Inducers (Moderate) may decrease the serum concentration of DilTIAZem. Risk C: Monitor therapy

Disopyramide: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Disopyramide. Risk C: Monitor therapy

Doravirine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Doravirine. Risk C: Monitor therapy

Doxofylline: Sympathomimetics may enhance the adverse/toxic effect of Doxofylline. Risk C: Monitor therapy

DOXOrubicin (Conventional): CYP3A4 Inducers (Moderate) may decrease the serum concentration of DOXOrubicin (Conventional). Risk X: Avoid combination

DroNABinol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of DroNABinol. Risk C: Monitor therapy

Dronedarone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dronedarone. Risk C: Monitor therapy

Duvelisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Duvelisib. Management: Avoid if possible. If used, on day 12 of combination increase duvelisib from 25 mg twice daily to 40 mg twice daily or from 15 mg twice daily to 25 mg twice daily. Resume prior duvelisib dose 14 days after stopping moderate CYP3A4 inducer. Risk D: Consider therapy modification

Dydrogesterone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dydrogesterone. Risk C: Monitor therapy

Efavirenz: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Efavirenz. Risk C: Monitor therapy

Elacestrant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elacestrant. Risk X: Avoid combination

Elbasvir and Grazoprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elbasvir and Grazoprevir. Risk X: Avoid combination

Elexacaftor, Tezacaftor, and Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elexacaftor, Tezacaftor, and Ivacaftor. Risk C: Monitor therapy

Eliglustat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Eliglustat. Risk C: Monitor therapy

Elvitegravir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elvitegravir. Risk C: Monitor therapy

Encorafenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Encorafenib. Risk C: Monitor therapy

Entrectinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Entrectinib. Risk X: Avoid combination

Enzalutamide: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Enzalutamide. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Enzalutamide. Risk C: Monitor therapy

Erdafitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Erdafitinib. Management: If a moderate CYP3A4 inducer must be used at the start of erdafitinib, administer erdafitinib at a dose of 9 mg daily. If a moderate CYP3A4 inducer is discontinued, continue erdafitinib at the same dose unless there is evidence of drug toxicity. Risk D: Consider therapy modification

Erlotinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Erlotinib. Risk C: Monitor therapy

Esketamine: May enhance the hypertensive effect of CNS Stimulants. Risk C: Monitor therapy

Estrogen Derivatives: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Estrogen Derivatives. Risk C: Monitor therapy

Etoposide: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Etoposide. Risk C: Monitor therapy

Etoposide Phosphate: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Etoposide Phosphate. Risk C: Monitor therapy

Etravirine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Etravirine. Risk C: Monitor therapy

Everolimus: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Everolimus. Risk C: Monitor therapy

Exemestane: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Exemestane. Risk C: Monitor therapy

Fedratinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Fedratinib. Risk X: Avoid combination

Felodipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Felodipine. Risk C: Monitor therapy

FentaNYL: CYP3A4 Inducers (Moderate) may decrease the serum concentration of FentaNYL. Risk C: Monitor therapy

Fexinidazole: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Fexinidazole. Risk X: Avoid combination

Finerenone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Finerenone. Risk X: Avoid combination

Flibanserin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Flibanserin. Risk X: Avoid combination

Fosamprenavir: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Fosamprenavir. Risk C: Monitor therapy

Fosaprepitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Fosaprepitant. Specifically, CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite aprepitant. Risk C: Monitor therapy

Fosnetupitant: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Fosnetupitant. Risk C: Monitor therapy

Fosphenytoin-Phenytoin: CYP2C19 Inhibitors (Weak) may increase the serum concentration of Fosphenytoin-Phenytoin. Risk C: Monitor therapy

Fostamatinib: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Fostamatinib. Risk C: Monitor therapy

Fruquintinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Fruquintinib. Management: Avoid this combination when possible. If combined, continue the same fruquintinib dose, but monitor for reduced fruquintinib efficacy. Risk D: Consider therapy modification

Ganaxolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ganaxolone. Management: Avoid concomitant use of ganaxolone and moderate CYP3A4 inducers whenever possible. If combined, consider increasing the dose of ganaxolone, but do not exceed the maximum recommended daily dose. Risk D: Consider therapy modification

Gefitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Gefitinib. Risk C: Monitor therapy

Gemigliptin: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Gemigliptin. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Gemigliptin. Risk C: Monitor therapy

Gepirone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Gepirone. Risk C: Monitor therapy

Glasdegib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Glasdegib. Management: Avoid use of glasdegib and moderate CYP3A4 inducers whenever possible. If combined, increase glasdegib dose from 100 mg daily to 200 mg daily or from 50 mg daily to 100 mg daily. Resume previous glasdegib dose 7 days after discontinuation of the inducer. Risk D: Consider therapy modification

Glecaprevir and Pibrentasvir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Glecaprevir and Pibrentasvir. Risk C: Monitor therapy

Guanethidine: May enhance the arrhythmogenic effect of Sympathomimetics. Guanethidine may enhance the hypertensive effect of Sympathomimetics. Risk C: Monitor therapy

GuanFACINE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of GuanFACINE. Management: Increase extended-release guanfacine dose by up to double when initiating guanfacine in patients taking CYP3A4 inducers or if initiating a CYP3A4 inducer in a patient already taking extended-release guanfacine. Monitor for reduced guanfacine efficacy. Risk D: Consider therapy modification

Hormonal Contraceptives: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Hormonal Contraceptives. Management: Advise patients to use an alternative method of contraception or a back-up method during coadministration, and to continue back-up contraception for 28 days after discontinuing a moderate CYP3A4 inducer to ensure contraceptive reliability. Risk D: Consider therapy modification

HYDROcodone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of HYDROcodone. Risk C: Monitor therapy

Hydrocortisone (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Hydrocortisone (Systemic). Risk C: Monitor therapy

Ibrexafungerp: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ibrexafungerp. Risk X: Avoid combination

Ibrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ibrutinib. Risk C: Monitor therapy

Idelalisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Idelalisib. Risk C: Monitor therapy

Ifosfamide: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Ifosfamide. CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Ifosfamide. Risk C: Monitor therapy

Imatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Imatinib. Risk C: Monitor therapy

Indinavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Indinavir. Management: Consider avoiding the combination of indinavir and moderate CYP3A4 inducers whenever possible due to the risk for decreased indinavir concentrations, reduced efficacy, and development of resistance. If combined, monitor for indinavir treatment failure. Risk D: Consider therapy modification

Infigratinib: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Infigratinib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Infigratinib. Risk X: Avoid combination

Iobenguane Radiopharmaceutical Products: CNS Stimulants may diminish the therapeutic effect of Iobenguane Radiopharmaceutical Products. Management: Discontinue all drugs that may inhibit or interfere with catecholamine transport or uptake for at least 5 biological half-lives before iobenguane administration. Do not administer these drugs until at least 7 days after each iobenguane dose. Risk X: Avoid combination

Ioflupane I 123: Modafinil may diminish the diagnostic effect of Ioflupane I 123. Risk C: Monitor therapy

Irinotecan Products: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Irinotecan Products. Specifically, concentrations of SN-38 may be reduced. Risk C: Monitor therapy

Isavuconazonium Sulfate: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Isavuconazonium Sulfate. Specifically, CYP3A4 Inducers (Moderate) may decrease isavuconazole serum concentrations. Risk C: Monitor therapy

Isradipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Isradipine. Risk C: Monitor therapy

Istradefylline: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Istradefylline. Risk C: Monitor therapy

Itraconazole: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Itraconazole. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Itraconazole. Risk C: Monitor therapy

Ivabradine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ivabradine. Risk X: Avoid combination

Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ivacaftor. Risk C: Monitor therapy

Ixabepilone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ixabepilone. Risk C: Monitor therapy

Ixazomib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ixazomib. Risk C: Monitor therapy

Ketamine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ketamine. Risk C: Monitor therapy

Ketoconazole (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ketoconazole (Systemic). Risk C: Monitor therapy

Kratom: May enhance the adverse/toxic effect of Sympathomimetics. Risk X: Avoid combination

Lapatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lapatinib. Risk C: Monitor therapy

Larotrectinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Larotrectinib. Management: Double the larotrectinib dose if used together with a moderate CYP3A4 inducer. Following discontinuation of the moderate CYP3A4 inducer, resume the previous dose of larotrectinib after a period of 3 to 5 times the inducer's half-life. Risk D: Consider therapy modification

Lefamulin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lefamulin. Management: Avoid concomitant use of lefamulin with moderate CYP3A4 inducers unless the benefits outweigh the risks. Risk D: Consider therapy modification

Lefamulin (Intravenous): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lefamulin (Intravenous). Management: Avoid concomitant use of lefamulin (intravenous) with moderate CYP3A4 inducers unless the benefits outweigh the risks. Risk D: Consider therapy modification

Lemborexant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lemborexant. Risk X: Avoid combination

Lenacapavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lenacapavir. Risk X: Avoid combination

Leniolisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Leniolisib. Risk X: Avoid combination

Lercanidipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lercanidipine. Risk C: Monitor therapy

Letermovir: Modafinil may decrease the serum concentration of Letermovir. Risk X: Avoid combination

Levamlodipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Levamlodipine. Risk C: Monitor therapy

Levoketoconazole: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Levoketoconazole. Risk C: Monitor therapy

Levomethadone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Levomethadone. Risk C: Monitor therapy

Levothyroxine: May enhance the adverse/toxic effect of Sympathomimetics. Specifically, the risk of coronary insufficiency may be increased in patients with coronary artery disease. Levothyroxine may enhance the therapeutic effect of Sympathomimetics. Sympathomimetics may enhance the therapeutic effect of Levothyroxine. Risk C: Monitor therapy

LinaGLIPtin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of LinaGLIPtin. Risk C: Monitor therapy

Linezolid: May enhance the hypertensive effect of Sympathomimetics. Management: Consider initial dose reductions of sympathomimetic agents, and closely monitor for enhanced blood pressure elevations, in patients receiving linezolid. Risk D: Consider therapy modification

Lonafarnib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lonafarnib. Risk X: Avoid combination

Lopinavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lopinavir. Risk C: Monitor therapy

Lorlatinib: CYP3A4 Inducers (Moderate) may enhance the hepatotoxic effect of Lorlatinib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lorlatinib. Management: Avoid use of lorlatinib with moderate CYP3A4 inducers. If such a combination must be used, increase lorlatinib to 125 mg daily. Monitor for reduced lorlatinib efficacy and consider closer monitoring of AST, ALT, and bilirubin. Risk D: Consider therapy modification

Lovastatin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lovastatin. Risk C: Monitor therapy

Lumacaftor and Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lumacaftor and Ivacaftor. Risk C: Monitor therapy

Lumateperone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lumateperone. Risk X: Avoid combination

Lurasidone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lurasidone. Management: Monitor for decreased lurasidone effects if combined with moderate CYP3A4 inducers and consider increasing the lurasidone dose if coadministered with a moderate CYP3A4 inducer for 7 or more days. Risk D: Consider therapy modification

Macimorelin: Modafinil may diminish the diagnostic effect of Macimorelin. Risk C: Monitor therapy

Macitentan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Macitentan. Risk C: Monitor therapy

Maraviroc: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Maraviroc. Management: Increase maraviroc adult dose to 600 mg twice/day, but only if not receiving a strong CYP3A4 inhibitor. Not recommended for pediatric patients not also receiving a strong CYP3A4 inhibitor. Contraindicated in patients with CrCl less than 30 mL/min. Risk D: Consider therapy modification

Maribavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Maribavir. Risk C: Monitor therapy

Mavacamten: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mavacamten. Risk X: Avoid combination

Mavorixafor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mavorixafor. Risk C: Monitor therapy

Mefloquine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mefloquine. Risk C: Monitor therapy

Meperidine: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Meperidine. Specifically, concentrations of normeperidine, the CNS stimulating metabolite, may be increased. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Meperidine. Risk C: Monitor therapy

Methadone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Methadone. Risk C: Monitor therapy

MethylPREDNISolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of MethylPREDNISolone. Risk C: Monitor therapy

Mianserin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mianserin. Risk C: Monitor therapy

Midazolam: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Midazolam. Risk C: Monitor therapy

Midostaurin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Midostaurin. Risk C: Monitor therapy

MiFEPRIStone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of MiFEPRIStone. Management: Avoid combined use in patients treated for Cushing's disease. When used for pregnancy termination, mifepristone efficacy may be reduced and an alternative pregnancy termination procedure may be warranted. Ensure a follow-up assessment after combined use. Risk D: Consider therapy modification

Mirodenafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mirodenafil. Risk C: Monitor therapy

Mitapivat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mitapivat. Management: Consider alternatives to this combination when possible. If combined, monitor hemoglobin and titrate mitapivat beyond 50 mg twice daily, if needed, but do not exceed doses of 100 mg twice daily. Risk D: Consider therapy modification

Mobocertinib: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Mobocertinib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mobocertinib. Risk X: Avoid combination

Naldemedine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Naldemedine. Risk C: Monitor therapy

Naloxegol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Naloxegol. Risk C: Monitor therapy

Nelfinavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nelfinavir. Risk C: Monitor therapy

Neratinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Neratinib. Risk X: Avoid combination

Netupitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Netupitant. Risk C: Monitor therapy

Nevirapine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nevirapine. Risk C: Monitor therapy

NIFEdipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of NIFEdipine. Risk C: Monitor therapy

Nilotinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nilotinib. Risk C: Monitor therapy

Nilvadipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nilvadipine. Risk C: Monitor therapy

NiMODipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of NiMODipine. Risk C: Monitor therapy

Nirmatrelvir and Ritonavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nirmatrelvir and Ritonavir. Risk C: Monitor therapy

Nirogacestat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nirogacestat. Risk X: Avoid combination

Nisoldipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nisoldipine. Risk X: Avoid combination

Olaparib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Olaparib. Risk X: Avoid combination

Oliceridine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Oliceridine. Risk C: Monitor therapy

Olmutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Olmutinib. Risk C: Monitor therapy

Olutasidenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Olutasidenib. Risk X: Avoid combination

Omaveloxolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Omaveloxolone. Risk X: Avoid combination

Orelabrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Orelabrutinib. Risk X: Avoid combination

Osimertinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Osimertinib. Risk C: Monitor therapy

OxyCODONE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of OxyCODONE. Risk C: Monitor therapy

Ozanimod: May enhance the hypertensive effect of Sympathomimetics. Risk C: Monitor therapy

PACLitaxel (Conventional): CYP3A4 Inducers (Moderate) may decrease the serum concentration of PACLitaxel (Conventional). Risk C: Monitor therapy

PACLitaxel (Protein Bound): CYP3A4 Inducers (Moderate) may decrease the serum concentration of PACLitaxel (Protein Bound). Risk C: Monitor therapy

Pacritinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pacritinib. Risk X: Avoid combination

Palbociclib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Palbociclib. Risk C: Monitor therapy

Palovarotene: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Palovarotene. Risk X: Avoid combination

PAZOPanib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of PAZOPanib. Risk C: Monitor therapy

Pemigatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pemigatinib. Risk X: Avoid combination

Perampanel: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Perampanel. Management: Increase perampanel starting dose to 4 mg/day if used with moderate CYP3A4 inducers. Increase perampanel dose by 2 mg/day no more than once weekly based on response and tolerability. Dose adjustments may be needed if the inducer is discontinued. Risk D: Consider therapy modification

Pimavanserin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pimavanserin. Risk X: Avoid combination

Piperaquine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Piperaquine. Risk C: Monitor therapy

Pirtobrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pirtobrutinib. Management: Avoid concomitant use if possible. If combined, if the current pirtobrutinib dose is 200 mg once daily, increase to 300 mg once daily. If current pirtobrutinib dose is 50 mg or 100 mg once daily, increase the dose by 50 mg. Risk D: Consider therapy modification

PONATinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of PONATinib. Risk C: Monitor therapy

Pralsetinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pralsetinib. Management: If this combo cannot be avoided, increase pralsetinib dose from 400 mg daily to 600 mg daily; from 300 mg daily to 500 mg daily; and from 200 mg daily to 300 mg daily. Risk D: Consider therapy modification

Praziquantel: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Praziquantel. Management: Consider alternatives to this combination whenever possible. If combined, monitor closely for reduced praziquantel efficacy. If possible, stop the moderate CYP3A4 inducer 2 to 4 weeks before praziquantel initiation. Risk D: Consider therapy modification

PrednisoLONE (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of PrednisoLONE (Systemic). Risk C: Monitor therapy

PredniSONE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of PredniSONE. Risk C: Monitor therapy

Pretomanid: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pretomanid. Risk X: Avoid combination

QUEtiapine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of QUEtiapine. Risk C: Monitor therapy

QuiNIDine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of QuiNIDine. Risk C: Monitor therapy

QuiNINE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of QuiNINE. Risk C: Monitor therapy

Quizartinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Quizartinib. Risk X: Avoid combination

Ranolazine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ranolazine. Risk X: Avoid combination

Regorafenib: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Regorafenib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Regorafenib. Risk C: Monitor therapy

Repaglinide: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Repaglinide. Risk C: Monitor therapy

Repotrectinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Repotrectinib. Risk X: Avoid combination

Ribociclib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ribociclib. Risk C: Monitor therapy

Rilpivirine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Rilpivirine. Risk C: Monitor therapy

Rimegepant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Rimegepant. Risk X: Avoid combination

Ripretinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ripretinib. Management: Avoid this combination if possible. If concomitant use is required, increase ripretinib to 150 mg twice daily. Decrease ripretinib to 150 mg once daily 14 days after stopping a moderate CYP3A4 inducer. Monitor patients for ripretinib response and toxicity Risk D: Consider therapy modification

RisperiDONE: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of RisperiDONE. CYP3A4 Inducers (Moderate) may decrease the serum concentration of RisperiDONE. Risk C: Monitor therapy

Ritlecitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ritlecitinib. Risk C: Monitor therapy

Ritonavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ritonavir. Risk C: Monitor therapy

Roflumilast (Systemic): CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Roflumilast (Systemic). CYP3A4 Inducers (Moderate) may decrease the serum concentration of Roflumilast (Systemic). Risk C: Monitor therapy

Rolapitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Rolapitant. Risk C: Monitor therapy

Samidorphan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Samidorphan. Risk C: Monitor therapy

Saquinavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Saquinavir. Risk C: Monitor therapy

Selpercatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Selpercatinib. Risk X: Avoid combination

Selumetinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Selumetinib. Risk X: Avoid combination

Sertraline: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sertraline. Risk C: Monitor therapy

Sildenafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sildenafil. Risk C: Monitor therapy

Simeprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Simeprevir. Risk X: Avoid combination

Simvastatin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Simvastatin. Risk C: Monitor therapy

Sirolimus (Conventional): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sirolimus (Conventional). Risk C: Monitor therapy

Sirolimus (Protein Bound): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sirolimus (Protein Bound). Risk C: Monitor therapy

Sofosbuvir: Modafinil may decrease the serum concentration of Sofosbuvir. Risk X: Avoid combination

Solriamfetol: Sympathomimetics may enhance the hypertensive effect of Solriamfetol. Sympathomimetics may enhance the tachycardic effect of Solriamfetol. Risk C: Monitor therapy

Solriamfetol: CNS Stimulants may enhance the hypertensive effect of Solriamfetol. CNS Stimulants may enhance the tachycardic effect of Solriamfetol. Risk C: Monitor therapy

Sonidegib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sonidegib. Risk X: Avoid combination

SORAfenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of SORAfenib. Risk C: Monitor therapy

Sotorasib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sotorasib. Risk C: Monitor therapy

Sparsentan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sparsentan. Risk C: Monitor therapy

SUFentanil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of SUFentanil. Risk C: Monitor therapy

SUNItinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of SUNItinib. Risk C: Monitor therapy

Suvorexant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Suvorexant. Risk C: Monitor therapy

Sympathomimetics: May enhance the adverse/toxic effect of other Sympathomimetics. Risk C: Monitor therapy

Tacrolimus (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tacrolimus (Systemic). Risk C: Monitor therapy

Tadalafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tadalafil. Risk C: Monitor therapy

Tamoxifen: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Tamoxifen. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tamoxifen. Risk C: Monitor therapy

Tasimelteon: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tasimelteon. Risk C: Monitor therapy

Tazemetostat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tazemetostat. Risk X: Avoid combination

Tedizolid: May enhance the hypertensive effect of Sympathomimetics. Tedizolid may enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy

Temsirolimus: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Temsirolimus. Specifically, sirolimus concentrations may be decreased. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Temsirolimus. Risk C: Monitor therapy

Tetrahydrocannabinol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tetrahydrocannabinol. Risk C: Monitor therapy

Tetrahydrocannabinol and Cannabidiol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tetrahydrocannabinol and Cannabidiol. Risk C: Monitor therapy

Tezacaftor and Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tezacaftor and Ivacaftor. Risk C: Monitor therapy

Thiotepa: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Thiotepa. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Thiotepa. Risk C: Monitor therapy

Ticagrelor: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Ticagrelor. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ticagrelor. Risk C: Monitor therapy

Tivozanib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tivozanib. Risk C: Monitor therapy

Tofacitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tofacitinib. Risk C: Monitor therapy

Tolvaptan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tolvaptan. Risk C: Monitor therapy

Toremifene: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Toremifene. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Toremifene. Risk C: Monitor therapy

Trabectedin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Trabectedin. Risk C: Monitor therapy

TraMADol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of TraMADol. Risk C: Monitor therapy

TraZODone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of TraZODone. Risk C: Monitor therapy

Triazolam: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Triazolam. Risk C: Monitor therapy

Tucatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tucatinib. Risk C: Monitor therapy

Ubrogepant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ubrogepant. Management: Use an initial ubrogepant dose of 100 mg and second dose (if needed) of 100 mg when used with a moderate CYP3A4 inducer. Risk D: Consider therapy modification

Ulipristal: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ulipristal. Risk X: Avoid combination

Upadacitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Upadacitinib. Risk C: Monitor therapy

Valbenazine: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Valbenazine. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Valbenazine. Risk C: Monitor therapy

Vandetanib: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Vandetanib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vandetanib. Risk C: Monitor therapy

Velpatasvir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Velpatasvir. Risk X: Avoid combination

Vemurafenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vemurafenib. Risk C: Monitor therapy

Venetoclax: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Venetoclax. Risk X: Avoid combination

Verapamil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Verapamil. Risk C: Monitor therapy

Vilazodone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vilazodone. Risk C: Monitor therapy

Voclosporin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voclosporin. Risk X: Avoid combination

Vonoprazan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vonoprazan. Risk X: Avoid combination

Vorapaxar: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vorapaxar. Risk X: Avoid combination

Voriconazole: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voriconazole. Risk C: Monitor therapy

Vortioxetine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vortioxetine. Risk C: Monitor therapy

Voxelotor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voxelotor. Management: Avoid concomitant use of voxelotor and moderate CYP3A4 inducers. If unavoidable, increase the voxelotor dose to 2,000 mg once daily. For children ages 4 to less than 12 years, weight-based dose adjustments are required. See full monograph for details. Risk D: Consider therapy modification

Voxilaprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voxilaprevir. Risk X: Avoid combination

Zaleplon: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zaleplon. Risk C: Monitor therapy

Zanubrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zanubrutinib. Management: Avoid this combination if possible. If coadministration of zanubrutinib and a moderate CYP3A4 inducer is required, increase the zanubrutinib dose to 320 mg twice daily. Risk D: Consider therapy modification

Zolpidem: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zolpidem. Risk C: Monitor therapy

Zopiclone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zopiclone. Risk C: Monitor therapy

Zuranolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zuranolone. Risk X: Avoid combination

Food Interactions

Food delays absorption, but does not affect bioavailability. Management: Administer without regard to meals.

Reproductive Considerations

Evaluate pregnancy status prior to modafinil initiation; patients who may become pregnant should avoid modafinil use or use effective contraception during modafinil therapy (Ghaffari 2021).

Modafinil induces cytochrome P450 enzymes, decreasing systemic exposure to drugs metabolized via CYP3A4/5. Efficacy of steroidal contraceptives (including depot and implantable contraceptives) may be decreased; alternate means of effective contraception should be used during modafinil therapy and for ≥1 month after modafinil is discontinued. Consult drug interactions database for more detailed information specific to use of modafinil and contraceptives.

Pregnancy Considerations

Outcome information following modafinil use in pregnancy is limited (Calvo-Ferrandiz 2018; Cesta 2020; Damkier 2020; Haervig 2014). Data collected from the Nuvigil/Provigil pregnancy registry suggest an increased risk of major fetal congenital malformations following in utero exposure to modafinil. Outcome information is based on 148 pregnancies reported to the registry between February 2010 and February 2019 (modafinil n=81; armodafinil n=65; both n=1). Data collected prospectively for 122 pregnancies (102 live births with known outcomes) indicated a 13% rate of major congenital malformations. When including data from retrospective live births (n=26), the malformation rate remained the same. No specific pattern of malformations was observed (Kaplan 2021). An increased risk of spontaneous abortion and intrauterine growth restriction has been reported with modafinil.

Data collection to monitor pregnancy and infant outcomes following exposure to modafinil is ongoing. Health care providers are encouraged to enroll patients exposed to modafinil during pregnancy in the registry (1-866-404-4106); pregnant patients may also enroll themselves.

Breastfeeding Considerations

Armodafinil, the active metabolite of modafinil, is present in breast milk.

Breast milk was sampled over 24 hours in a female 19 days postpartum following long-term use of modafinil 250 mg daily. The peak breast milk concentration of armodafinil was 2.4 mcg/mL 2 hours after the maternal dose and decreased to 0.43 mcg/mL prior to the next dose. Her infant was not breastfed (Aurora 2018).

The manufacturer recommends that caution be exercised when administering modafinil to breastfeeding females.

Monitoring Parameters

BP; heart rate; increased monitoring in patients with recent myocardial infarction or unstable angina; development of severe skin reactions; development or exacerbation of psychiatric symptoms (eg, agitation, anxiety, depression); pregnancy status within 1 week prior to treatment initiation (females of reproductive potential).

Mechanism of Action

The exact mechanism of action is unclear. Modafinil has been shown to significantly increase dopamine in the brain by blocking dopamine transporters; however, has a lower affinity for dopamine receptors compared to amphetamines (Volkow 2009). EEG studies have shown modafinil increases high-frequency alpha waves while decreasing both delta and theta wave activity, effects consistent with generalized increases in mental alertness (James 2011). Studies also have demonstrated decreased GABA-mediated neurotransmission through increased turnover of serotonin and enhanced activity of 5-HT₂ receptors and that an intact central alpha-adrenergic system is required for modafinil's activity (Kumar 2008; Schwartz 2008).

Pharmacokinetics (Adult Data Unless Noted)

Modafinil is a racemic compound (10% S-isomer and 90% R-isomer at steady state) whose enantiomers have different pharmacokinetics

Distribution: V_d: 0.9 L/kg

Protein binding: ~60%, primarily to albumin

Metabolism: Hepatic; multiple pathways including CYP3A4

Half-life elimination: Effective half-life: 15 hours

Time to peak, serum: 2 to 4 hours; may be delayed ~1 hour with food.

Excretion: Urine (80% as metabolites, <10% as unchanged drug); feces (1%)

Pharmacokinetics: Additional Considerations (Adult Data Unless Noted)

Altered kidney function: In severe, chronic renal failure (CrCl ≤20 mL/minute), exposure to modafinil acid (inactive metabolite) was increased 9-fold.

Hepatic function impairment: In patients with cirrhosis of the liver, clearance is decreased ~60% and steady-state concentrations are doubled.

Older adult: Oral clearance decreased ~20% in patients with a mean age of 63 years of age.

Brand Names: International

International Brand Names by Country

For country code abbreviations (show table)

(AE) United Arab Emirates: Modiodal;
(AR) Argentina: Intensit | Nopral | Vigicer | Visper;
(AT) Austria: Modafinil aristo | Modasomil;
(AU) Australia: Apo-modafinil | Modafin | Modafinil an | Modafinil gh | Modafinil mylan | Modavigil;
(BE) Belgium: Provigil;
(BG) Bulgaria: Aspendos;
(BR) Brazil: Stavigile;
(CH) Switzerland: Modasomil;
(CL) Chile: Alertex | Mentix | Modavitae | Naxelan | Resotyl;
(CO) Colombia: Alerticine | Carim | Modafilo;
(CZ) Czech Republic: Aspendos | Vigil;
(DE) Germany: Modafinil aurobindo | Modafinil glenmark | Modafinil Heumann | Modafinil neuraxpharm | Provigil | Vigil;
(DO) Dominican Republic: Resotyl;
(EC) Ecuador: Alertex | Carim;
(EE) Estonia: Modafinil aurobindo | Modafinil glenmark | Modiodal | Provigil;
(EG) Egypt: Bravamax | Modasomil | Modifree;
(ES) Spain: Modafinilo aristo | Modafinilo Aurobindo | Modafinilo bluefish | Modafinilo Mylan | Modafinilo tarbis | Modiodal;
(FI) Finland: Modafinil orion;
(FR) France: Modafinil arrow | Modafinil biogaran | Modafinil cephalon | Modafinil EG | Modafinil mylan | Modiodal;
(GB) United Kingdom: Modafinil mylan | Provigil;
(GR) Greece: Aspendos | Modiodal;
(IE) Ireland: Prosentio | Provigil;
(IL) Israel: Provigil;
(IN) India: Modafil | Modalert | Modapro | Modatec | Modfast | Modnite | Provake;
(IT) Italy: Provigil;
(JP) Japan: Modiodal;
(KR) Korea, Republic of: Modanil | Provigil;
(KW) Kuwait: Apo-modafinil;
(LB) Lebanon: Modafinil arrow | Modiodal;
(LT) Lithuania: Modiodal;
(LU) Luxembourg: Provigil;
(LV) Latvia: Modafinil aurobindo | Modafinil neuraxpharm | Modiodal | Provigil;
(MX) Mexico: Aditral | Maverany | Modiodal | Weicop | Zauroness | Zydilo;
(MY) Malaysia: Provigil;
(NL) Netherlands: Aspendos | Modafinil mylan | Modiodal;
(NO) Norway: Modafinil Orifarm | Modiodal;
(NZ) New Zealand: Modavigil;
(PE) Peru: Bolixin;
(PK) Pakistan: Dowvigil | V zac;
(PL) Poland: Actimodan | Modafinil glenmark | Provigil | Vigil;
(PR) Puerto Rico: Provigil;
(PT) Portugal: Modafinil Generis | Modafinil wynn | Modiodal;
(PY) Paraguay: Bolixin | Provigil;
(RO) Romania: Aspendos;
(SA) Saudi Arabia: Apo-modafinil | Modiodal;
(SE) Sweden: Modafinil 2care4 | Modafinil bluefish | Modafinil mylan | Modafinil Orifarm | Modafinil orion | Modafinil sandoz | Modiodal | Myldamo;
(SG) Singapore: Provigil;
(SI) Slovenia: Altasomil | Vigil;
(SK) Slovakia: Aspendos | Vigil;
(TR) Turkey: Cralium | Modiodal | Modiogen | Modivigil | Modiwake;
(TW) Taiwan: Provigil;
(UY) Uruguay: Carim | Movigil;
(ZA) South Africa: Modafinil ipharma | Provigil

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Topic 10157 Version 507.0

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Modafinil: Drug information