Active Ingredient

Dipyridamole

Dipyridamole is a medication that helps prevent blood clots. It is often used in combination with other medicines to enhance its effectiveness.

This medication is commonly utilized in situations where reducing the risk of stroke or other clot-related conditions is important.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Dipyridamole Brands

Strengths 25mg, 100mg

Aggrenox

Strengths 225mg

Dipyridamole is typically used to prevent certain types of blood clots and related conditions.

Dipyridamole works by preventing platelets in the blood from sticking together, which helps to reduce the formation of harmful blood clots.

It achieves this effect by inhibiting certain enzymes, thereby enhancing blood flow and reducing clot risk.

This action helps in lowering the chances of stroke and other complications related to blood clots.

Not everyone experiences side effects with Dipyridamole, and many side effects are mild and temporary.

If you experience serious or persistent symptoms, contact your healthcare provider.

Monitor for any unusual bleeding or bruising and inform your doctor if these occur.
Avoid heavy alcohol consumption while taking this medication.
Inform your healthcare provider about any other medications you are taking to avoid interactions.
Do not stop taking Dipyridamole suddenly without consulting your doctor.
If you experience symptoms like chest pain or severe headache, seek medical attention immediately.

Always consult your doctor for personalized medical advice.

How does Dipyridamole help prevent strokes?

Dipyridamole helps prevent strokes by stopping platelets from clumping together, reducing the risk of blood clots.

When can I expect Dipyridamole to start working?

The effects of Dipyridamole in preventing clots can begin shortly after starting the medication, but the timing can vary by individual.

Is it safe to take Dipyridamole with other medications?

Dipyridamole can interact with other medications, so it’s important to inform your doctor about all drugs you are taking.

Can I consume alcohol while on Dipyridamole?

It’s advisable to limit alcohol consumption while taking Dipyridamole, as alcohol can increase certain side effects.

What should I do if I miss a dose of Dipyridamole?

If you miss a dose, take it as soon as you remember, unless it’s almost time for your next dose. Do not double up doses.