Drug interactions
Cyclophosphamide + Ofatumumab sc
Severity: Moderate
Cyclophosphamide and Ofatumumab sc: 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 suppress immune function, and combined or sequential use increases the risk of serious infection. The effect depends on the timing and duration of prior cytotoxic therapy.
What this interaction means in plain words
Cyclophosphamide and Ofatumumab sc 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 through B-cell depletion with ofatumumab and cytotoxic lymphocyte suppression with cyclophosphamide.
What to do
Monitor for infection and check immunoglobulin levels and blood counts. When switching, allow for the duration of cyclophosphamide effect before starting ofatumumab.
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 Cyclophosphamide
Frequently asked questions
Can I take Cyclophosphamide with Ofatumumab sc?
MediHelp rates the interaction as moderate. Cyclophosphamide and Ofatumumab sc 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 suppress immune function, and combined or sequential use increases the risk of serious infection. The effect depends on the timing and duration of prior cytotoxic therapy.
How serious is the interaction between Cyclophosphamide and Ofatumumab sc?
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 infection and check immunoglobulin levels and blood counts. When switching, allow for the duration of cyclophosphamide effect before starting ofatumumab.
What other medicines interact with Cyclophosphamide?
MediHelp also lists interactions of Cyclophosphamide with, for example, Adenovirus types 4 and 7 live, Belatacept, Bendamustine. The full list is on the Cyclophosphamide page.
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