Drug interactions
Chlorpheniramine + Dextroamphetamine
Severity: Minor
Chlorpheniramine and Dextroamphetamine: 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
Chlorpheniramine causes drowsiness that dextroamphetamine may partially counteract. The stimulant may mask sedation without fully reversing psychomotor impairment. Significant harm is not expected.
What this interaction means in plain words
Chlorpheniramine and Dextroamphetamine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Chlorpheniramine belongs to Respiratory; Dextroamphetamine belongs to Central Nervous System.
Why it happens
Opposing central nervous system effects (H1 antagonism versus amphetamine-induced monoamine release).
What to do
No action beyond awareness is usually required. Counsel patients not to rely on the stimulant to drive safely after taking a sedating antihistamine.
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 Dextroamphetamine
- Dextroamphetamine + Isocarboxazid Contraindicated
- Dextroamphetamine + Linezolid Contraindicated
- Dextroamphetamine + Methylene blue Contraindicated
- Dextroamphetamine + Phenelzine Contraindicated
- Dextroamphetamine + Rasagiline Contraindicated
- Dextroamphetamine + Safinamide Contraindicated
Other interactions of Chlorpheniramine
Frequently asked questions
Can I take Chlorpheniramine with Dextroamphetamine?
MediHelp rates the interaction as minor. Chlorpheniramine and Dextroamphetamine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Chlorpheniramine causes drowsiness that dextroamphetamine may partially counteract. The stimulant may mask sedation without fully reversing psychomotor impairment. Significant harm is not expected.
How serious is the interaction between Chlorpheniramine and Dextroamphetamine?
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 action beyond awareness is usually required. Counsel patients not to rely on the stimulant to drive safely after taking a sedating antihistamine.
What other medicines interact with Dextroamphetamine?
MediHelp also lists interactions of Dextroamphetamine with, for example, Isocarboxazid, Linezolid, Methylene blue. The full list is on the Dextroamphetamine page.
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