Drug interactions
Dimenhydrinate + Valerian
Severity: Moderate
Dimenhydrinate and Valerian: 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 agents cause sedation, so taking them together may deepen drowsiness and impair alertness and psychomotor performance. The effect is most relevant for driving, operating machinery or in older adults.
What this interaction means in plain words
Dimenhydrinate and Valerian 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 CNS depression from the sedating antihistamine and the GABAergic herbal sedative.
What to do
Advise patients to avoid driving or hazardous tasks until response is known. Consider avoiding the combination in older adults or reducing the dose of one agent.
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
Frequently asked questions
Can I take Dimenhydrinate with Valerian?
MediHelp rates the interaction as moderate. Dimenhydrinate and Valerian 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 agents cause sedation, so taking them together may deepen drowsiness and impair alertness and psychomotor performance. The effect is most relevant for driving, operating machinery or in older adults.
How serious is the interaction between Dimenhydrinate and Valerian?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients to avoid driving or hazardous tasks until response is known. Consider avoiding the combination in older adults or reducing the dose of one agent.
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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