Compare Heparin vs. Arixtra

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Prevents blood clots. 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.Coming soon.
How it works
Heparin is an anticoagulant that binds with proteins and platelets to stop blood clots from being made and traveling to the brain, heart, and lungs.Coming soon.
Type of medication
Prescription only
Coming soon.
Available as
  • Injection
  • Injection
Used for (click to learn more)
  • Deep venous thrombosis
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Reviews & ratings
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Side effects

We haven’t found good data for Heparin side effects.

FDA side effect reports for Heparin »

We haven’t found good data for Arixtra side effects.

FDA side effect reports for Arixtra »
Risk factors for serious side effects
  • History of bleeding problems
  • Severe high blood pressure
  • Older age
  • Heparin-induced thrombocytopenia
Detailed Heparin risks & warnings »
Coming soon.
Pregnancy category
CFDA pregnancy category (Weigh risks vs. benefits)

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

See the FDA package insert
BFDA pregnancy category (Probably safe)

Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

See the FDA package insert
No specific alcohol-related info.No specific alcohol-related info.
No specific food-related info.No specific food-related info.
Kidneys and liver
No specific kidneys and liver-related info.No specific kidneys and liver-related info.
No specific sex-related info.No specific sex-related info.
No specific sleep-related info.No specific sleep-related info.
No specific weight-related info.No specific weight-related info.
Upsides and benefits
  • 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.
Coming soon.
Downsides and risks
  • 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.
Coming soon.
Tips from our pharmacists for people taking the medication
  • 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.
Coming soon.
Learn more
More about HeparinSide effectsReviews & ratingsAlternativesFDA package insert
More about ArixtraSide effectsFDA package insert