Drug interactions
Meclizine + Tiotropium
Severity: Moderate
Meclizine and Tiotropium: 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
Meclizine is a first-generation antihistamine with antimuscarinic properties. Combined with tiotropium it may increase dry mouth, urinary retention, constipation and blurred vision.
What this interaction means in plain words
Meclizine and Tiotropium 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; Tiotropium belongs to Respiratory.
Why it happens
Additive antimuscarinic pharmacodynamic effects.
What to do
Monitor for anticholinergic adverse effects, particularly in older adults and those with glaucoma or bladder outlet obstruction. Use the lowest effective meclizine dose.
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 Tiotropium
Other interactions of Meclizine
Frequently asked questions
Can I take Meclizine with Tiotropium?
MediHelp rates the interaction as moderate. Meclizine and Tiotropium 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 is a first-generation antihistamine with antimuscarinic properties. Combined with tiotropium it may increase dry mouth, urinary retention, constipation and blurred vision.
How serious is the interaction between Meclizine and Tiotropium?
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 anticholinergic adverse effects, particularly in older adults and those with glaucoma or bladder outlet obstruction. Use the lowest effective meclizine dose.
What other medicines interact with Tiotropium?
MediHelp also lists interactions of Tiotropium with, for example, Glycopyrrolate inhaled, Indacaterol-glycopyrronium, Revefenacin. The full list is on the Tiotropium page.
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