Drug interactions
Avapritinib + Dimenhydrinate
Severity: Moderate
Avapritinib and Dimenhydrinate: 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
Avapritinib can cause cognitive effects including drowsiness, memory impairment and confusion. A sedating antihistamine may worsen these CNS effects and impair alertness.
What this interaction means in plain words
Avapritinib and Dimenhydrinate 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.
Avapritinib belongs to Oncology; Dimenhydrinate belongs to Respiratory.
Why it happens
Additive CNS depressant and cognitive effects.
What to do
Monitor for worsening cognitive impairment or sedation. Avoid or reduce the sedating drug if neurological symptoms appear.
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 Dimenhydrinate
Other interactions of Avapritinib
Frequently asked questions
Can I take Avapritinib with Dimenhydrinate?
MediHelp rates the interaction as moderate. Avapritinib and Dimenhydrinate 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. Avapritinib can cause cognitive effects including drowsiness, memory impairment and confusion. A sedating antihistamine may worsen these CNS effects and impair alertness.
How serious is the interaction between Avapritinib and Dimenhydrinate?
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 worsening cognitive impairment or sedation. Avoid or reduce the sedating drug if neurological symptoms appear.
What other medicines interact with Dimenhydrinate?
MediHelp also lists interactions of Dimenhydrinate with, for example, Belladonna and opium, Brexanolone, Calcium / magnesium / potassium / sodium oxybates. The full list is on the Dimenhydrinate page.
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