Drug interactions
Dipyridamole + Regadenoson
Severity: Major
Dipyridamole and Regadenoson: major 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
Dipyridamole inhibits cellular adenosine uptake and deamination, which can potentiate adenosine receptor-mediated effects and alter the response to the A2A agonist regadenoson during myocardial perfusion imaging. The result may be unpredictable vasodilation, hypotension or altered test performance.
What this interaction means in plain words
Dipyridamole and Regadenoson can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dipyridamole belongs to Cardiovascular; Regadenoson belongs to Cardiovascular.
Why it happens
Dipyridamole raises adenosine levels and alters adenosine receptor signaling, so the pharmacodynamic response to regadenoson is unpredictable.
What to do
Withhold dipyridamole for at least 2 days before regadenoson stress testing, as recommended in labeling. Monitor blood pressure and ECG during the procedure if exposure cannot be avoided.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Dipyridamole
- Dipyridamole + Riociguat Contraindicated
- Adenosine + Dipyridamole Major
- Betrixaban + Dipyridamole Major
- Dabigatran + Dipyridamole Major
- Dipyridamole + Venetoclax Major
- Dipyridamole + Vorapaxar Major
Other interactions of Regadenoson
- Regadenoson + Theophylline Major
- Caffeine + Regadenoson Moderate
Frequently asked questions
Can I take Dipyridamole with Regadenoson?
MediHelp rates the interaction as major. Dipyridamole and Regadenoson can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Dipyridamole inhibits cellular adenosine uptake and deamination, which can potentiate adenosine receptor-mediated effects and alter the response to the A2A agonist regadenoson during myocardial perfusion imaging. The result may be unpredictable vasodilation, hypotension or altered test performance.
How serious is the interaction between Dipyridamole and Regadenoson?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Withhold dipyridamole for at least 2 days before regadenoson stress testing, as recommended in labeling. Monitor blood pressure and ECG during the procedure if exposure cannot be avoided.
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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