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Fecal microbiota capsules (oral): Drug information

Fecal microbiota capsules (oral): Drug information
(For additional information see "Fecal microbiota capsules (oral): Patient drug information")

For abbreviations, symbols, and age group definitions used in Lexicomp (show table)
Brand Names: US
  • Vowst
Pharmacologic Category
  • Microbiota
Dosing: Adult

Note: On the day prior to the first dose, administer a bowel prep according to the manufacturer's directions.

Clostridioides difficile infection, prophylaxis

Clostridioides difficile infection, prophylaxis: Oral: 4 capsules once daily for 3 consecutive days, beginning 2 to 4 days after completion of C. difficile treatment regimen (Ref).

Dosing: Kidney Impairment: Adult

There are no dosage adjustments provided in the manufacturer's labeling; however, not expected to be systemically absorbed.

Dosing: Hepatic Impairment: Adult

There are no dosage adjustments provided in the manufacturer's labeling; however, not expected to be systemically absorbed.

Dosing: Older Adult

Refer to adult dosing.

Adverse Reactions

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

>10%:

Gastrointestinal: Abdominal distention (31%), constipation (14%)

Nervous system: Chills (11%)

1% to 10%: Gastrointestinal: Diarrhea (3% to 10%), flatulence (4%), nausea (3%)

Contraindications

There are no contraindications listed in the manufacturer's labeling.

Warnings/Precautions

Dosage form specific issues:

• Food allergies: Because product is manufactured from human fecal matter, may contain food allergens; however, potential for the product to cause adverse reactions due to food allergens is unknown.

• Transmissible infectious agents: Manufactured from human fecal matter; may carry risk of transmitting infectious agents. Infections thought to be transmitted by this product should be reported to the manufacturer.

Dosage Forms: US

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

Capsule, Oral:

Vowst: Fecal microbiota spores, live-brpk

Generic Equivalent Available: US

No

Administration: Adult

Oral: Swallow capsules whole; do not open, crush, dissolve, or chew.

First dose: Administer a bowel prep according to manufacturer's directions and do not eat or drink, except small amounts of water, for ≥8 hours prior to first dose.

Subsequent doses: Administer on an empty stomach before the first meal of the day.

Use: Labeled Indications

Clostridioides difficile infection, prophylaxis: Prevention of recurrence of C. difficile infection (CDI) in patients ≥18 years of age following antibiotic treatment of recurrent CDI.

Limitations of use: Not indicated for treatment of CDI.

Medication Safety Issues
Sound-alike/look-alike issues:

Fecal microbiota (live) (oral) may be confused with fecal microbiota (live) (rectal).

Metabolism/Transport Effects

None known.

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 Lexicomp drug interactions program by clicking on the “Launch drug interactions program” link above.

Antibiotics: Fecal Microbiota (Live) (Oral) may diminish the therapeutic effect of Antibiotics. Risk X: Avoid combination

Pregnancy Considerations

Animal developmental toxicity studies have not been conducted.

Breastfeeding Considerations

It is not known if fecal microbiota (live) would be present in breast milk following oral administration.

According to the manufacturer, the decision to breastfeed during therapy should consider the risk of infant exposure, the benefits of breastfeeding to the infant, and the benefits of treatment to the mother.

Dietary Considerations

Do not eat or drink, except small amounts of water, for ≥8 hours prior to first dose. Administer subsequent doses on an empty stomach before the first meal of the day.

Mechanism of Action

Live purified Firmacutes spores modulate bile acid concentrations and restore short chain fatty acids resulting in colonization resistance to C. difficile and restoration of intestinal eubiosis (Martinez-Gili 2020; Soveral 2022).

  1. Feuerstadt P, Louie TJ, Lashner B, et al. SER-109, an oral microbiome therapy for recurrent Clostridioides difficile infection. N Engl J Med. 2022;386(3):220-229. doi:10.1056/NEJMoa2106516 [PubMed 35045228]
  2. Martinez-Gili L, McDonald JAK, Liu Z, et al. Understanding the mechanisms of efficacy of fecal microbiota transplant in treating recurrent Clostridioides difficile infection and beyond: the contribution of gut microbial-derived metabolites. Gut Microbes. 2020;12(1):1810531. doi:10.1080/19490976.2020.1810531 [PubMed 32893721]
  3. Sims MD, Khanna S, Feuerstadt P, et al; ECOSPOR IV Investigators. Safety and tolerability of SER-109 as an investigational microbiome therapeutic in adults with recurrent Clostridioides difficile infection: a phase 3, open-label, single-arm trial. JAMA Netw Open. 2023;6(2):e2255758. doi:10.1001/jamanetworkopen.2022.55758 [PubMed 36780159]
  4. Soveral LF, Korczaguin GG, Schmidt PS, Nunes IS, Fernandes C, Zárate-Bladés CR. Immunological mechanisms of fecal microbiota transplantation in recurrent Clostridioides difficile infection. World J Gastroenterol. 2022;28(33):4762-4772. doi:10.3748/wjg.v28.i33.4762 [PubMed 36156924]
  5. Vowst (fecal microbiota) [prescribing information]. Brisbane, CA: Aimmune Therapeutics, Inc; April 2023.
Topic 141486 Version 142.0

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