Drug interactions
Atropine + Tiotropium
Severity: Moderate
Atropine 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
Both drugs are antimuscarinic, so combined use can add to systemic anticholinergic effects. This may produce tachycardia, dry mouth, urinary retention, constipation, blurred vision and confusion.
What this interaction means in plain words
Atropine 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.
Atropine belongs to Miscellaneous; Tiotropium belongs to Respiratory.
Why it happens
Additive muscarinic receptor antagonism.
What to do
Avoid regular concurrent use where possible. If needed, monitor heart rate, urinary function and mental status.
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 Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Frequently asked questions
Can I take Atropine with Tiotropium?
MediHelp rates the interaction as moderate. Atropine 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. Both drugs are antimuscarinic, so combined use can add to systemic anticholinergic effects. This may produce tachycardia, dry mouth, urinary retention, constipation, blurred vision and confusion.
How serious is the interaction between Atropine 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: Avoid regular concurrent use where possible. If needed, monitor heart rate, urinary function and mental status.
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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