Compare Coumadin vs. Aspirin

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

Coumadin (warfarin)

Prescription only

Aspirin

Over-the-counter
Prevents blood clots.

Coumadin (warfarin) is a cheap and effective medicine that prevents new blood clots. It requires regular blood tests and you'll need to eat, exercise, and take your medicines consistently.

5.2/ 7 average rating with 513 reviewsforCoumadin
Relieves pain, fever, and inflammation. Protects your heart and thins blood.

A low dose of Aspirin (81mg) every day can protect your heart, but it's not the best medicine to take for pain, swelling, or fever.

5.2/ 7 average rating with 533 reviewsforAspirin
Upsides
  • Coumadin (warfarin) is available as a generic, so it should be less expensive than the brand version.
  • In case you start bleeding too much while using Coumadin (warfarin), your doctor can give you another drug that reverses Coumadin (warfarin)'s effects.
  • Coumadin (warfarin) comes in numerous strengths.
  • Coumadin (warfarin) has been around for a long time and is one of the most commonly used 'blood thinner' medicines.
  • When taking low doses (81 mg) every day, Aspirin provides protection for your heart and prevents heart attacks and stroke.
  • Used in higher doses to relieve pain, swelling, and fever.
  • Available over-the-counter in drugstores by itself and in combination with other cold and flu medications.
Downsides
  • Raises your risk of bleeding and bruising.
  • Requires regular blood work, such as an INR, to make sure Coumadin (warfarin) is working correctly.
  • Your daily dose of Coumadin (warfarin) can change if you change your diet, exercise patterns, or use of alcohol.
  • A lot of other drugs and supplements interact with Coumadin (warfarin), so you'll need to check with your doctor or pharmacist before starting any new medicines.
  • Not a preferred medication for treating pain, swelling, or fever due to its high risk of bleeding.
  • NSAIDs (like ibuprofen and naproxen) and acetaminophen (Tylenol) are better for treating pain and fever thank Aspirin.
  • Aspirin raises your risk of bleeding, especially when used with other blood thinner medications like warfarin (Coumadin).
  • Studies show that using higher doses of Aspirin (162 mg or more) every day raises your risk of stomach bleeding and doesn't provide any additional heart protection.
Used for
Dosage forms
  • Pill
  • Pill
Price
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Reviews
513 
61%
think this treatment is worth it
54%
think this treatment works well
21%
think this treatment is a hassle

Have you used Coumadin (warfarin)?

Leave a review
533 
76%
think this treatment is worth it
41%
think this treatment works well
6%
think this treatment is a hassle

Have you used Aspirin?

Leave a review
Side effects
The Coumadin (warfarin) FDA package insert doesn’t have numbers about how common side effects are.
The Aspirin FDA package insert doesn’t have numbers about how common side effects are.
Risks and warnings
  • Life threatening bleeding

    Coumadin (warfarin) dose too high

    ...and 8 more risk factors

  • Harm to fetus

    Women of childbearing age

See more detailed risks and warnings
  • Brain damage or death from Reye's Syndrome

    Children 18 years or younger

    ...and 1 more risk factors

  • Stomach bleeding

    History of stomach bleeding or ulcers

    ...and 3 more risk factors

  • Serious allergic reactions

    Asthma

    ...and 4 more risk factors

  • Harm to unborn babies

    Women of childbearing age

See more detailed risks and warnings