Coumadin

(warfarin)

3.8/ 5 average rating with 513 reviewsforCoumadin
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Prevents blood clots.

Skip Upsides & Downsides section. Skip to side effects section.

Our bottom line

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.

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    $7.43
Quick facts about Coumadin
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (warfarin)

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.
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What to expect from Coumadin, on one page

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People’s experience with Coumadin

513reviews so far. What do you think?

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.
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What to expect from Coumadin, on one page

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How it works

Coumadin (warfarin) prevents blood clots from forming. It doesn't break up clots that already exist. It can only stop new ones from forming or old ones from getting bigger.

Quick facts about Coumadin
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (warfarin)

Used for

Dosage forms

  • Pill
People’s experience with Coumadin

513reviews so far. What do you think?

Prices and coupons

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What to expect when you take Coumadin (warfarin) for Anticoagulant

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  • First few hoursHours
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  • Effectiveness
  • Starts to kick in
    Full effects
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  • Possible side effects
  • Unexpected bleeding
  • Bruising
  • Stomach pain
  • Blue or purple toes
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Side effect rates for Coumadin (warfarin)

Risks and Warnings for Coumadin (warfarin)

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    • Higher risk if:
    • Coumadin (warfarin) dose too high
    • Age greater than 65 year
    • History of stomach bleeding
    • High blood pressure
    • Kidney or liver problems
    • Drug interactions
    • Change in lifestyle or diet
    • Alcohol use
    • Certain genetic factors

    Your doctor will work with you to find a dose of Coumadin (warfarin) that works best for you. It's important to follow-up with your doctor or pharmacist to make sure it's working well and that you're taking the best possible dose. Rarely, Coumadin (warfarin) can cause unusual bleeding that can be life-threatening. Get immediate medical attention if you can't stop bleeding, fall and hit your head, notice blood in your urine, or have bright red or dark, tarry "coffee ground" stool.

    This is a black box warning. The FDA requires this warning when there is a significant risk of serious or life-threatening effects that anyone taking the drug should consider.

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

Pharmacist Q&A

Coumadin (warfarin) questions for

Frequently Asked Questions

This medication prevents and treats blood clots associated with atrial fibrillation.

Who is this drug for?

This medication prevents and treats blood clots associated with atrial fibrillation.

Common concerns from people taking Coumadin (warfarin)

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Pregnancy

Research studies with real people or animals found harmful effects on unborn babies. If you’re pregnant, the risks to your unborn baby outweigh the benefits.

Tip: Always talk with your doctor before you take any medication while pregnant.
FDA pregnancy category for Coumadin
XUnsafe
Interactions
  • Coumadin (warfarin) interacts with many drugs and supplements. This can increase your risk of bleeding or of developing a new blood clot. If you start a new medication or change your diet, let your doctor know so they can change your dose if necessary.
  • 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.
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  • Not worth it
    Big hassle
    Reviewed warfarinon 3/2/2018Only good for retired or unemployed people.
    42
    Man
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