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Drug interactions

Bcg vaccine live + Cilastatin-imipenem

Severity: Moderate

Bcg vaccine live and Cilastatin-imipenem: 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

Live BCG relies on viable bacteria to induce immunity, and antibacterial agents active against mycobacteria or related organisms may reduce vaccine viability. Imipenem has some activity against BCG strains, so the immune response could be blunted.

What this interaction means in plain words

Bcg vaccine live and Cilastatin-imipenem 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: Low

Why it happens

Antibacterial activity may reduce the viability of the live attenuated organism.

What to do

Delay BCG vaccination until the antibiotic course is complete, where this is clinically feasible. Repeat vaccination or assess response if the vaccine was given during therapy.

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 Bcg vaccine live with Cilastatin-imipenem?

MediHelp rates the interaction as moderate. Bcg vaccine live and Cilastatin-imipenem 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. Live BCG relies on viable bacteria to induce immunity, and antibacterial agents active against mycobacteria or related organisms may reduce vaccine viability. Imipenem has some activity against BCG strains, so the immune response could be blunted.

How serious is the interaction between Bcg vaccine live and Cilastatin-imipenem?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Delay BCG vaccination until the antibiotic course is complete, where this is clinically feasible. Repeat vaccination or assess response if the vaccine was given during therapy.

What other medicines interact with Cilastatin-imipenem?

MediHelp also lists interactions of Cilastatin-imipenem with, for example, Divalproex, Ganciclovir, Valproic acid. The full list is on the Cilastatin-imipenem page.

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