Compare Coumadin vs. Effient

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

Coumadin
(Warfarin)

Effient
(Prasugrel)

Prevents blood clots. Coumadin (Warfarin) is an old, cheap, and effective medicine to prevent blood clots, but it requires some monitoring, dose adjustments, and even lifestyle changes.Coming soon.
Find lowest prices
Powered by GoodRxSave on your next prescription. Be sure you’re getting the lowest price for your medication, even if you have insurance.
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.146484375Coumadin
Reviews for Coumadin (Warfarin)
61%
of people (All ages) say Coumadin (Warfarin) is worth it
54%
say it works well
21%
say it's a big hassle
512 reviews
Have you used Coumadin (Warfarin)?
Worth itNot sureNot worth it

Not enough reviews for this drug. Help someone out, leave a review!

Have you used Effient (Prasugrel)?
Worth itNot sureNot worth it
Side effects
CoumadinEffient

The Coumadin FDA package insert doesn’t have numbers about how common side effects are.

More about Coumadin side effects »

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

FDA side effect reports for Effient »
How it works
CoumadinEffient
Coumadin (Warfarin) is an anticoagulant blood thinner. It lowers chemicals called clotting factors so that it's harder for your body to form blood clots.Coming soon.
Type of medication
CoumadinEffient
Anticoagulant
Vitamin K antagonist
Prescription only
Coming soon.
Available as
CoumadinEffient
  • Pill
  • Pill
Used for (click to learn more)
CoumadinEffient
  • Heart attack or pre-heart attack - Percutaneous coronary intervention - Thrombosis; Prophylaxis
Risk factors for serious side effects
CoumadinEffient
  • Dose too high
  • Age greater than 65
  • History of gastrointestinal bleeding
  • High blood pressure
  • Kidney or liver problems
  • Drug interactions
  • Change in lifestyle or diet
  • Illnesses
  • Alcohol
  • Certain genetic makeup
    • Women of childbearing age
    Detailed Coumadin (Warfarin) risks & warnings »
    Coming soon.
    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.

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

    Interactions
    CoumadinEffient
    • Lots of interactions with other drugs or supplements. Always check with your doctor or pharmacist before starting any new meds.
    • Interacts with a lot of medicines and supplements. Don't start any new meds without talking to your doctor.
    No interactions related info.
    Food
    CoumadinEffient
    • Eat foods containing consistent amounts of Vitamin K.
    No food related info.
    Upsides and benefits
    CoumadinEffient
    • Oral blood-thinning medicine that prevents blood clots from forming or getting bigger.
    • Prevents complications of blood clots that can cause extreme discomfort or death. Examples include stroke (blood clots in the brain), pulmonary embolism (blood clots in the lungs causing trouble breathing), or deep vein thrombosis (blood clots in the legs causing pain and blood vessel damage).
    • Has an antidote, Vitamin K, in case of a major accidental bleeding.
    • Coumadin (Warfarin) has been around for a long time, so we know a lot about how well it works and what the risks are.
    • It's dirt cheap.
    Coming soon
    Downsides and risks
    CoumadinEffient
    • Raises your risk of bleeding and bruising.
    • Requires routine blood testing (called an INR) to see how well the medicine is working for you and to make the dose just right for you.
    • Many lifestyle factors can affect how well warfarin works, such as diet, alcohol, and activity level, so it's important that you try to stay consistent with your behaviors.
    • Lots of interactions with other drugs or supplements. Always check with your doctor or pharmacist before starting any new meds.
    Coming soon
    Tips from our pharmacists for people taking the medication
    CoumadinEffient
    • Thins your blood to prevent clots from forming or getting bigger. Doesn't break up existing clots.
    • The amount you need depends on your diet, other medical problems, and genes.
    • Take it exactly as instructed.
    • Can raise your risk of bleeding or bruising.
    • Requires regular blood tests to get your dose right.
    • Interacts with a lot of medicines and supplements. Don't start any new meds without talking to your doctor.
    • Eat foods containing consistent amounts of Vitamin K.
    • Tell your doctor immediately if you fell or if you have unusual bleeding, bruising, swelling, or changes in vision and coordination.
    • Get a medical bracelet so that people know you're on a blood thinner during an emergency situation.
    Coming soon
    Learn more
    More about CoumadinSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Coumadin (Warfarin)?
    Worth itNot sureNot worth it
    More about EffientSide effectsFDA package insert
    Have you used Effient (Prasugrel)?
    Worth itNot sureNot worth it