Drug interactions
Clemastine + Diethylpropion
Severity: Minor
Clemastine and Diethylpropion: minor 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
Clemastine is sedating while diethylpropion is a sympathomimetic stimulant, so the effects may partly oppose each other. The net effect on alertness is unpredictable.
What this interaction means in plain words
Clemastine and Diethylpropion have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Opposing pharmacodynamic effects of H1 antihistamine sedation and sympathomimetic CNS stimulation.
What to do
No dose change is usually needed. Monitor for drowsiness, palpitations and insomnia.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Clemastine
Frequently asked questions
Can I take Clemastine with Diethylpropion?
MediHelp rates the interaction as minor. Clemastine and Diethylpropion have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Clemastine is sedating while diethylpropion is a sympathomimetic stimulant, so the effects may partly oppose each other. The net effect on alertness is unpredictable.
How serious is the interaction between Clemastine and Diethylpropion?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is usually needed. Monitor for drowsiness, palpitations and insomnia.
What other medicines interact with Clemastine?
MediHelp also lists interactions of Clemastine with, for example, Alfentanil, Benzhydrocodone / acetaminophen, Buprenorphine buccal. The full list is on the Clemastine page.
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