Combining Aspirin and Dipyridamole is a major interaction and should generally be avoided without close medical supervision.
Combining aspirin and dipyridamole significantly increases your risk of bleeding, including serious stomach or intestinal bleeding, due to their combined effects on blood clotting.
Mechanism: Both aspirin and dipyridamole inhibit platelet aggregation, albeit through different mechanisms. Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1), preventing thromboxane A2 production, while dipyridamole inhibits phosphodiesterase, increasing cyclic AMP and reducing platelet adhesion. Their additive antiplatelet effects lead to a heightened risk of hemorrhage.
Aspirin vs. Dipyridamole
Compare Aspirin and Dipyridamole: mechanism of action, indications, side effects, cost, and which may be right for you.
Drug A
Aspirin
Aspirin Regular Strength
NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)
RxDrug B
Dipyridamole
Dipyridamole
Antiplatelet Agents
RxQuick Comparison
| Category | Aspirin | Dipyridamole |
|---|---|---|
| Drug Class | NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) | Antiplatelet Agents |
| Rx Status | Rx | Rx |
| Generic Available | No | No |
| Typical Cost | $5–$20/month | $150–$400/month |
Aspirin Overview
ASPIRIN (brand name: Aspirin Regular Strength) is a NSAIDs. Uses temporarily relieves: headache muscle pain toothache menstrual pain pain and fever of colds minor pain of arthritis
Full Aspirin guide →Dipyridamole Overview
Dipyridamole is a medication that helps prevent blood clots. It works by making platelets, tiny blood cells involved in clotting, less sticky. This medicine is primarily used alongside other blood thinners to prevent dangerous blood clots after heart valve replacement surgery.
Full Dipyridamole guide →How Each Drug Works
Dipyridamole
Mechanism of Action Dipyridamole inhibits the uptake of adenosine into platelets, endothelial cells and erythrocytes in vitro and in vivo ; the inhibition occurs in a dose-dependent manner at therapeutic concentrations (0.5 mcg/mL to 1.9 mcg/mL). This inhibition results in an increase in local concentrations of adenosine which acts on the platelet A 2 -receptor thereby stimulating platelet adenylate cyclase and increasing platelet cyclic-3',5'-adenosine monophosphate (cAMP) levels. Via this mech…
Approved Uses (Indications)
Aspirin
Uses temporarily relieves: headache muscle pain toothache menstrual pain pain and fever of colds minor pain of arthritis
Dipyridamole
INDICATIONS AND USAGE Dipyridamole tablets are indicated as an adjunct to coumarin anticoagulants in the prevention of postoperative thromboembolic complications of cardiac valve replacement.
Side Effects
Dipyridamole
Cost Comparison
Aspirin
$5–$20/month
Aspirin is available over-the-counter at a very low cost, often less than $5 for a large supply. Discount cards can sometimes offer minor savings on the prescription version, but it's generally more cost-effective to buy OTC.
Dipyridamole
$150–$400/month
Since Dipyridamole is only available as a brand-name drug, look for manufacturer coupons or patient assistance programs to help reduce the cost. Discount cards like GoodRx may also offer savings.
Compare prices for Aspirin and Dipyridamole
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Medical Disclaimer
The information on RxGuide is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, pharmacist, or other qualified health provider with any questions you may have regarding a medical condition or medication. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.