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Drug interactions

Bleomycin + Dengue vaccine

Severity: Major

Bleomycin and Dengue vaccine: 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

Dengue vaccine is live attenuated, and cytotoxic chemotherapy can weaken immune control of the vaccine virus. This may cause vaccine-related infection and a poor immune response.

What this interaction means in plain words

Bleomycin and Dengue vaccine 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.

Evidence level: Moderate

Why it happens

Chemotherapy-induced immunosuppression impairs vaccine response and permits replication of live vaccine virus.

What to do

Avoid live vaccines during chemotherapy and defer until immune recovery per local guidance. Obtain specialist advice if vaccination is urgently 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?

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 Bleomycin with Dengue vaccine?

MediHelp rates the interaction as major. Bleomycin and Dengue vaccine 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. Dengue vaccine is live attenuated, and cytotoxic chemotherapy can weaken immune control of the vaccine virus. This may cause vaccine-related infection and a poor immune response.

How serious is the interaction between Bleomycin and Dengue vaccine?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid live vaccines during chemotherapy and defer until immune recovery per local guidance. Obtain specialist advice if vaccination is urgently needed.

What other medicines interact with Bleomycin?

MediHelp also lists interactions of Bleomycin with, for example, Adenovirus types 4 and 7 live, Brentuximab, Brentuximab vedotin. The full list is on the Bleomycin page.

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