Prescription onlyLower-cost generic available


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Prevents blood clots.

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Prescription onlyLower-cost generic available

Our pharmacists’ bottom line

Heparin is a good anticoagulant that prevents blood clots. However, you'll need to get frequent blood tests to make sure it's working well.

  • Safe to use in pregnancy and if you're breast feeding.
  • There are other medications that can help stop unexpected bleeding while taking Heparin.
  • Available as a generic medication.
  • Usually used in the hospital, but can be given at home too.
  • You'll need to get labs/blood draws done on a regular basis to make sure the drug is working and to make sure you don't get unexpected side effects.
  • You can be at higher risk for bleeding or clotting while taking Heparin compared to other anticoagulants.
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Side effects for Heparin

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These are side effects of Heparin reported to the FDA by people taking it, and by doctors and pharmacists.

0 reports

What to expect when you start Heparin

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Tips from our pharmacists
  • Make sure to change where you inject Heparin every time.
  • Don't take aspirin or other anti-inflammatory medications without talking to your doctor first.
  • You will have to do regular blood draws or labs to make sure that Heparin is working for you.

Risks and Warnings for Heparin

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    • Higher risk if:
    • History of bleeding problems
    • Severe high blood pressure
    • Older age

    There are certain medicines that can significantly change the amount of Heparin in your body, putting you at risk for bleeding or making the drug less effective. Let your doctor know about other prescription and non-prescription medicines you're taking, especially other medicines that affect bleeding risk like aspirin and NSAIDs.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Heparin

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The FDA category for this medication is C. It is advised that you: Weigh risks vs. benefits