Drug interactions
Meclizine + Pilocarpine
Severity: Moderate
Meclizine and Pilocarpine: 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
Pilocarpine stimulates muscarinic receptors whereas meclizine has antimuscarinic activity, so meclizine may reduce pilocarpine's therapeutic effect such as salivation. The effect is usually modest.
What this interaction means in plain words
Meclizine and Pilocarpine 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.
Meclizine belongs to Respiratory; Pilocarpine belongs to Miscellaneous.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors.
What to do
Monitor pilocarpine effectiveness and consider an alternative to meclizine if symptoms of dry mouth worsen.
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
Other interactions of Pilocarpine
- Amitriptyline + Pilocarpine Moderate
- Atenolol-chlorthalidone + Pilocarpine Moderate
- Atenolol + Pilocarpine Moderate
- Atropine + Pilocarpine Moderate
- Betaxolol + Pilocarpine Moderate
- Bethanechol + Pilocarpine Moderate
Frequently asked questions
Can I take Meclizine with Pilocarpine?
MediHelp rates the interaction as moderate. Meclizine and Pilocarpine 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. Pilocarpine stimulates muscarinic receptors whereas meclizine has antimuscarinic activity, so meclizine may reduce pilocarpine's therapeutic effect such as salivation. The effect is usually modest.
How serious is the interaction between Meclizine and Pilocarpine?
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 pilocarpine effectiveness and consider an alternative to meclizine if symptoms of dry mouth worsen.
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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