Drug interactions
Ofatumumab sc + Pemetrexed
Severity: Moderate
Ofatumumab sc and Pemetrexed: 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
Both drugs impair immune function: ofatumumab depletes B cells and pemetrexed causes myelosuppression. Together they may increase the risk of infections.
What this interaction means in plain words
Ofatumumab sc and Pemetrexed 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.
Why it happens
Additive immunosuppression from B-cell depletion and cytotoxic myelosuppression.
What to do
Monitor for signs of infection and blood counts during concurrent use. Consider the duration of immune effects when sequencing therapies.
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?
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Other interactions of Pemetrexed
Frequently asked questions
Can I take Ofatumumab sc with Pemetrexed?
MediHelp rates the interaction as moderate. Ofatumumab sc and Pemetrexed 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. Both drugs impair immune function: ofatumumab depletes B cells and pemetrexed causes myelosuppression. Together they may increase the risk of infections.
How serious is the interaction between Ofatumumab sc and Pemetrexed?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for signs of infection and blood counts during concurrent use. Consider the duration of immune effects when sequencing therapies.
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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