Warfarin for Deep Vein Thrombosis

All medicines have side effects. But many people don't feel the side effects, or they are able to deal with them. Ask your pharmacist about the side effects of each medicine you take. Side effects are also listed in the information that comes with your medicine.

Here are some important things to think about:

• Usually the benefits of the medicine are more important than any minor side effects.
• Side effects may go away after you take the medicine for a while.
• If side effects still bother you and you wonder if you should keep taking the medicine, call your doctor. He or she may be able to lower your dose or change your medicine. Do not suddenly quit taking your medicine unless your doctor tells you to.

Bleeding: Call 911 or other emergency services right away if:

• You cough up blood.
• You vomit blood or what looks like coffee grounds.
• You pass maroon or very bloody stools.
• You have a sudden, severe headache that is different from past headaches. (It may be a sign of bleeding in the brain.)

Call your doctor right away if:

• You have new bruises or blood spots under your skin.
• You have a nosebleed that doesn't stop quickly.
• Your gums bleed when you brush your teeth.
• You have blood in your urine.
• Your stools are black and look like tar or have streaks of blood.
• You have heavy period bleeding or vaginal bleeding when you are not having your period.

If you are injured, apply pressure to stop the bleeding. Realize that it will take longer than you are used to for the bleeding to stop. If you can't get the bleeding to stop, call your doctor.

Allergic reaction: Call 911 or other emergency services right away if you have:

• Trouble breathing.
• Swelling of your face, lips, tongue, or throat.

Call your doctor if you have:

• Hives.

Other side effects of warfarin include:

• Skin rash.

See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)

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