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Warfarin is a medicine that helps prevent blood clots. It is often called a blood thinner. Doctors give warfarin to reduce the risk of blood clots.
Warfarin slows the time it takes for your blood to clot. That means it can cause bleeding problems. So it's important to know how to take it safely.
Foods and other medicines can affect the way warfarin works. Some can make warfarin work too well, which can cause bleeding. Others can make it work poorly, so that it doesn't prevent clots very well.
You'll also need regular blood tests to check how long it takes for your blood to form a clot. Depending on the results, your doctor may adjust your dose of warfarin.
These steps can help you take warfarin safely.
The test results tell your doctor whether your dose needs to be changed. Do not change your dose unless your doctor tells you to.
Many medicines can affect how warfarin works.
Smoking affects how the body uses medicine, and it increases the blood's clotting effects.
It can change how warfarin works.
These are bracelets, pendants, or charms that let others know you take warfarin.
Talk to your doctor about how you can prevent getting pregnant while you are taking it. If you think you might be pregnant, call your doctor.
Call 911 or other emergency services right away if:
Call your doctor now or seek medical care right away if:
Current as of: September 7, 2022
Author: Healthwise Staff
Medical Review:E. Gregory Thompson MD - Internal Medicine & Martin J. Gabica MD - Family Medicine & Adam Husney MD - Family Medicine
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