Drug interactions
Dextroamphetamine + Melatonin
Severity: Minor
Dextroamphetamine and Melatonin: 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
Melatonin promotes sleep, whereas dextroamphetamine causes wakefulness and insomnia, so the effects oppose each other. Melatonin is sometimes used deliberately to counter stimulant-related sleep problems.
What this interaction means in plain words
Dextroamphetamine and Melatonin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dextroamphetamine belongs to Central Nervous System; Melatonin belongs to Gastrointestinal Tract.
Why it happens
Opposing effects on sleep-wake regulation, with no established pharmacokinetic interaction.
What to do
No dose change is usually needed; give melatonin at bedtime and monitor sleep and daytime alertness.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dextroamphetamine and Melatonin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Melatonin
- Fluvoxamine + Melatonin Major
- Alfentanil + Melatonin Moderate
- Belladonna and opium + Melatonin Moderate
- Buprenorphine buccal + Melatonin Moderate
- Butabarbital + Melatonin Moderate
- Butalbital + Melatonin Moderate
Frequently asked questions
Can I take Dextroamphetamine with Melatonin?
MediHelp rates the interaction as minor. Dextroamphetamine and Melatonin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Melatonin promotes sleep, whereas dextroamphetamine causes wakefulness and insomnia, so the effects oppose each other. Melatonin is sometimes used deliberately to counter stimulant-related sleep problems.
How serious is the interaction between Dextroamphetamine and Melatonin?
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; give melatonin at bedtime and monitor sleep and daytime alertness.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
