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Drug interactions

Chloramphenicol + Microbiota

Severity: Moderate

Chloramphenicol and Microbiota: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Oral microbiota products contain live bacterial spores intended to recolonize the gut. Antibacterial agents such as chloramphenicol may kill or suppress these organisms and reduce efficacy.

What this interaction means in plain words

Chloramphenicol and Microbiota can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Evidence level: Moderate

Why it happens

Chloramphenicol's antibacterial activity can inhibit the viability of the administered live microbiota.

What to do

Complete the antibiotic course and allow a washout interval, typically a few days per product labeling, before giving the microbiota product.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Chloramphenicol with Microbiota?

MediHelp rates the interaction as moderate. Chloramphenicol and Microbiota can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Oral microbiota products contain live bacterial spores intended to recolonize the gut. Antibacterial agents such as chloramphenicol may kill or suppress these organisms and reduce efficacy.

How serious is the interaction between Chloramphenicol and Microbiota?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Complete the antibiotic course and allow a washout interval, typically a few days per product labeling, before giving the microbiota product.

What other medicines interact with Chloramphenicol?

MediHelp also lists interactions of Chloramphenicol with, for example, Adagrasib, Avapritinib, Bcg vaccine live. The full list is on the Chloramphenicol page.

Full monographs, dosing and an interaction checker in the MediHelp app

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