Drug interactions
Atropine + Belladonna alkaloids
Severity: Moderate
Atropine and Belladonna alkaloids: 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
Belladonna alkaloids such as hyoscyamine and scopolamine are antimuscarinic, so combining them with atropine duplicates therapy and may cause anticholinergic toxicity. Effects include dry mouth, tachycardia, urinary retention, hyperthermia, confusion and delirium.
What this interaction means in plain words
Atropine and Belladonna alkaloids 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 muscarinic receptor antagonism from duplicate antimuscarinic agents.
What to do
Avoid duplicate antimuscarinic therapy where possible. If used together, monitor for anticholinergic toxicity and reduce the 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 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 Belladonna alkaloids?
MediHelp rates the interaction as moderate. Atropine and Belladonna alkaloids 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. Belladonna alkaloids such as hyoscyamine and scopolamine are antimuscarinic, so combining them with atropine duplicates therapy and may cause anticholinergic toxicity. Effects include dry mouth, tachycardia, urinary retention, hyperthermia, confusion and delirium.
How serious is the interaction between Atropine and Belladonna alkaloids?
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 duplicate antimuscarinic therapy where possible. If used together, monitor for anticholinergic toxicity and reduce the dose.
What other medicines interact with Atropine?
MediHelp also lists interactions of Atropine with, for example, Eluxadoline, Henbane, Pramlintide. The full list is on the Atropine page.
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