Drug interactions
Dipyridamole + Melatonin
Severity: Minor
Dipyridamole 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 has been reported to have mild effects on coagulation and platelet function, so it could theoretically add to the antiplatelet effect of dipyridamole. Clinical evidence of meaningful bleeding is lacking.
What this interaction means in plain words
Dipyridamole 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.
Dipyridamole belongs to Cardiovascular; Melatonin belongs to Gastrointestinal Tract.
Why it happens
Possible weak additive effect on platelet function or coagulation; the mechanism is not well established.
What to do
No routine change is needed; ask patients about bleeding or bruising at follow-up, especially if other antithrombotic drugs are also used.
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 Dipyridamole
- Dipyridamole + Riociguat Contraindicated
- Adenosine + Dipyridamole Major
- Betrixaban + Dipyridamole Major
- Dabigatran + Dipyridamole Major
- Dipyridamole + Regadenoson Major
- Dipyridamole + Venetoclax Major
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 Dipyridamole with Melatonin?
MediHelp rates the interaction as minor. Dipyridamole 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 has been reported to have mild effects on coagulation and platelet function, so it could theoretically add to the antiplatelet effect of dipyridamole. Clinical evidence of meaningful bleeding is lacking.
How serious is the interaction between Dipyridamole 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 routine change is needed; ask patients about bleeding or bruising at follow-up, especially if other antithrombotic drugs are also used.
What other medicines interact with Dipyridamole?
MediHelp also lists interactions of Dipyridamole with, for example, Riociguat, Adenosine, Betrixaban. The full list is on the Dipyridamole page.
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