dipyridamole vs heparin
Side-by-side comparison of dipyridamole and heparin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
moderate Known Drug Interaction
7.2 Platelet Inhibitors Drugs such as NSAIDS (including salicylic acid, ibuprofen, indomethacin, and celecoxib), dextran, phenylbutazone, thienopyridines, dipyridamole, hydroxychloroquine, glycoprotein IIb/IIIa antagonists (including abciximab, eptifibatide, and tirofiban), and others that interfere with platelet-aggregation reactions (the main hemostatic defense of heparinized patients) may induce bleeding and should be used with caution in patients receiving heparin sodium.
Recommendation: Use these medications together with caution. Your healthcare provider should monitor you for bleeding risks.
Persantine
Heparin Sodium
Dipyridamole helps prevent blood clots after heart valve replacement. It works with other blood-thinning medicines.
Heparin is a medicine that helps prevent and treat blood clots. It is given as an injection into a vein or under the skin.
This medicine helps prevent blood clots after you have a heart valve replaced. It is used with a medicine like warfarin to prevent problems with blood clots. Dipyridamole does not work by itself for this purpose.
Heparin is used to prevent and treat blood clots in your veins and lungs. It can also prevent clots after surgery or if you have an irregular heartbeat called atrial fibrillation. Heparin can also treat blood clotting problems throughout your body and prevent clots during surgery, blood transfusions, or dialysis.
Dipyridamole is an antiplatelet medicine. It helps to keep blood cells called platelets from sticking together and forming clots. This helps your blood flow more freely.
Heparin works by stopping certain proteins in your blood from forming clots. It helps to thin your blood and prevent new clots from forming. It does not dissolve existing blood clots, but it can keep them from getting bigger.
- • Dizziness
- • Abdominal distress
- • Bleeding
- • Irritation at the injection site
- • Allergic reactions
- • Increased liver enzyme levels
- Falling 545
- Low blood pressure 531
- Pain 516
- Problems with thinking or memory 497
- Reduced alertness 471
- Low platelets caused by heparin 1,207
- Feeling sick to your stomach 712
- Allergic reaction to the medicine 603
- Throwing up 571
- Low blood pressure 553
Taking dipyridamole with certain medicines used for heart stress tests can increase the risk of heart-related side effects. Make sure your doctor knows you are taking dipyridamole before any stress test.
Heparin can cause serious bleeding, which can be fatal. It can also cause a severe reaction called heparin-induced thrombocytopenia (HIT), where your body attacks your own platelets. Make sure your doctor knows if you have ever had HIT. Using the wrong strength of heparin can also cause fatal bleeding.
Tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. It is not known if dipyridamole will harm your unborn baby or pass into breast milk.
If you are pregnant, talk to your doctor about the risks and benefits of using heparin. Preservative-free heparin is recommended during pregnancy if available. It is not known if heparin passes into breast milk, so it is recommended to avoid breastfeeding while using this medicine.
How to Read This dipyridamole vs heparin Comparison
dipyridamole is classified in the Antiplatelet / Vasodilator drug class, while heparin sits within the Unfractionated Heparin class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, dipyridamole has 2,560 submissions while heparin has 3,646. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known moderate interaction flagged in FDA labeling, attributed to these drugs both interfere with how your blood clots, making it more likely that you will bleed. dipyridamole stops blood cells from clumping together while heparin works as a blood thinner.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between dipyridamole and heparin - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.