Drug interactions
Meclizine + Olopatadine intranasal
Severity: Moderate
Meclizine and Olopatadine intranasal: 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
Intranasal olopatadine can cause somnolence, and meclizine is a sedating antihistamine. Combined use may increase drowsiness and impair psychomotor performance, including driving.
What this interaction means in plain words
Meclizine and Olopatadine intranasal 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 H1 receptor antagonism.
What to do
Avoid concurrent use when possible, or counsel patients about drowsiness and caution with driving and machinery. Consider whether one of the two agents can be stopped.
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 Meclizine
Frequently asked questions
Can I take Meclizine with Olopatadine intranasal?
MediHelp rates the interaction as moderate. Meclizine and Olopatadine intranasal 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. Intranasal olopatadine can cause somnolence, and meclizine is a sedating antihistamine. Combined use may increase drowsiness and impair psychomotor performance, including driving.
How serious is the interaction between Meclizine and Olopatadine intranasal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use when possible, or counsel patients about drowsiness and caution with driving and machinery. Consider whether one of the two agents can be stopped.
What other medicines interact with Meclizine?
MediHelp also lists interactions of Meclizine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Meclizine page.
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