Drug interactions
Sirolimus + Smallpox vaccine live
Severity: Contraindicated
Sirolimus and Smallpox vaccine live: contraindicated 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 vaccinia vaccine can cause progressive vaccinia and serious disseminated infection in immunosuppressed patients. Sirolimus also reduces the effectiveness of the vaccine.
What this interaction means in plain words
Sirolimus and Smallpox vaccine live are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
Sirolimus impairs T-cell control of replicating vaccinia virus and blunts vaccine response.
What to do
Avoid replicating vaccinia vaccine in patients on sirolimus; consider a non-replicating vaccine if protection is required. Seek infectious disease advice for exposures.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Sirolimus
- Adenovirus types 4 and 7 live + Sirolimus Contraindicated
- Bcg vaccine live + Sirolimus Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Sirolimus Contraindicated
- Ketoconazole + Sirolimus Contraindicated
- Levoketoconazole + Sirolimus Contraindicated
- Measles mumps and rubella vaccine live + Sirolimus Contraindicated
Frequently asked questions
Can I take Sirolimus with Smallpox vaccine live?
MediHelp rates the interaction as contraindicated. Sirolimus and Smallpox vaccine live are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Live vaccinia vaccine can cause progressive vaccinia and serious disseminated infection in immunosuppressed patients. Sirolimus also reduces the effectiveness of the vaccine.
How serious is the interaction between Sirolimus and Smallpox vaccine live?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid replicating vaccinia vaccine in patients on sirolimus; consider a non-replicating vaccine if protection is required. Seek infectious disease advice for exposures.
What other medicines interact with Sirolimus?
MediHelp also lists interactions of Sirolimus with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Sirolimus page.
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