Drug interactions
Dimenhydrinate + Loxapine
Severity: Moderate
Dimenhydrinate and Loxapine: 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
Dimenhydrinate releases diphenhydramine, a sedating anticholinergic antihistamine. With loxapine this can produce excessive drowsiness, impaired coordination and additive anticholinergic adverse effects.
What this interaction means in plain words
Dimenhydrinate and Loxapine 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.
Dimenhydrinate belongs to Respiratory; Loxapine belongs to Central Nervous System.
Why it happens
Additive CNS depression and antimuscarinic effects via H1 and muscarinic blockade.
What to do
Counsel on sedation and avoid driving or hazardous tasks. In older patients use the lowest dose or an alternative antiemetic and watch for confusion and urinary retention.
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 Loxapine
- Alfentanil + Loxapine Major
- Alprazolam + Loxapine Major
- Amisulpride + Loxapine Major
- Amoxapine + Loxapine Major
- Apomorphine + Loxapine Major
- Belladonna and opium + Loxapine Major
Other interactions of Dimenhydrinate
Frequently asked questions
Can I take Dimenhydrinate with Loxapine?
MediHelp rates the interaction as moderate. Dimenhydrinate and Loxapine 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. Dimenhydrinate releases diphenhydramine, a sedating anticholinergic antihistamine. With loxapine this can produce excessive drowsiness, impaired coordination and additive anticholinergic adverse effects.
How serious is the interaction between Dimenhydrinate and Loxapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel on sedation and avoid driving or hazardous tasks. In older patients use the lowest dose or an alternative antiemetic and watch for confusion and urinary retention.
What other medicines interact with Loxapine?
MediHelp also lists interactions of Loxapine with, for example, Alfentanil, Alprazolam, Amisulpride. The full list is on the Loxapine page.
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