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What is Warfarin?

Warfarin is a prescription medication used to prevent harmful blood clots from forming or growing larger. Beneficial blood clots prevent or stop bleeding, but harmful blood clots can cause a heart attack, stroke, deep vein thrombosis or pulmonary embolism.

How Does Warfarin Work?

The formation of a clot in the body is a complex process that involves multiple substances called clotting factors. Warfarin decreases the body’s ability to form blood clots by blocking the formation of vitamin K–dependent clotting factors.

When to Call the Healthcare Provider while taking Warfarin?

If experienced the following signs of bleeding, severe headache, confusion, weakness or numbness, coughing up large amounts of bright red blood, vomiting blood, bleeding that will not stop, bright red blood in stool, fall or injury to the head, and headache that is severe or unusual.

What is common don'ts while taking Warfarin?

Never double a dose because missed a prescribed dose. Don’t start new medications, herbals, or supplements without talking to the healthcare provider. Don’t make changes to warfarin dose without talking to the healthcare provider.

Does Warfarin interact with certain food?

Some foods can interfere with the effectiveness of warfarin. The most important point to remember is to eat regular food and not to make any major changes in the diet without contacting the healthcare provider.