Drug interactions
Dengue vaccine + Pemetrexed
Severity: Major
Dengue vaccine and Pemetrexed: 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 a live attenuated vaccine. Pemetrexed is a cytotoxic antimetabolite that suppresses immunity, which may reduce the vaccine response and raise the risk of vaccine-related infection.
What this interaction means in plain words
Dengue vaccine and Pemetrexed 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
Immunosuppression from cytotoxic chemotherapy blunts vaccine response and permits uncontrolled replication of live attenuated virus.
What to do
Avoid live vaccines during pemetrexed therapy and for a period after recovery of immune function as specified by local guidance. Vaccinate before starting chemotherapy where possible.
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?
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Other interactions of Pemetrexed
Frequently asked questions
Can I take Dengue vaccine with Pemetrexed?
MediHelp rates the interaction as major. Dengue vaccine and Pemetrexed 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 a live attenuated vaccine. Pemetrexed is a cytotoxic antimetabolite that suppresses immunity, which may reduce the vaccine response and raise the risk of vaccine-related infection.
How serious is the interaction between Dengue vaccine and Pemetrexed?
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 pemetrexed therapy and for a period after recovery of immune function as specified by local guidance. Vaccinate before starting chemotherapy where possible.
What other medicines interact with Pemetrexed?
MediHelp also lists interactions of Pemetrexed with, for example, Bacitracin, Brexucabtagene autoleucel, Celecoxib. The full list is on the Pemetrexed page.
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