Drug interactions
Cholera vaccine + Rifaximin
Severity: Major
Cholera vaccine and Rifaximin: major 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
The oral live attenuated cholera vaccine needs viable bacteria to colonize and stimulate immunity. Antibiotics active against V. cholerae could lower the immune response. Rifaximin has activity against many enteric bacteria and acts locally in the gut, where the vaccine strain must establish.
What this interaction means in plain words
Cholera vaccine and Rifaximin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Luminal antibacterial activity in the gut can reduce viability and colonization of the live attenuated vaccine strain.
What to do
Do not give the vaccine to patients who have recently had antibiotics; follow the labeled interval after the antibiotic course (14 days is stated in labeling). Delay the vaccine rather than the antibiotic when treatment is needed.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Cholera vaccine and Rifaximin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Rifaximin
- Microbiota + Rifaximin Major
- Amiodarone + Rifaximin Moderate
- Bcg intravesical live + Rifaximin Moderate
- Cyclosporine + Rifaximin Moderate
- Cyclosporin + Rifaximin Moderate
- Dronedarone + Rifaximin Moderate
Frequently asked questions
Can I take Cholera vaccine with Rifaximin?
MediHelp rates the interaction as major. Cholera vaccine and Rifaximin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. The oral live attenuated cholera vaccine needs viable bacteria to colonize and stimulate immunity. Antibiotics active against V. cholerae could lower the immune response. Rifaximin has activity against many enteric bacteria and acts locally in the gut, where the vaccine strain must establish.
How serious is the interaction between Cholera vaccine and Rifaximin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not give the vaccine to patients who have recently had antibiotics; follow the labeled interval after the antibiotic course (14 days is stated in labeling). Delay the vaccine rather than the antibiotic when treatment is needed.
What other medicines interact with Rifaximin?
MediHelp also lists interactions of Rifaximin with, for example, Microbiota, Amiodarone, Bcg intravesical live. The full list is on the Rifaximin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
