Take Coumadin exactly as prescribed by your doctor. Follow all directions on your prescription label. Your doctor may occasionally change your dose. Do not take warfarin in larger or smaller amounts or for longer than your doctor tells you to.
Take this medicine at the same time every day, with or without food. Never take a double dose.
Coumadin can make it easier for you to bleed. Seek emergency help if you have any bleeding that will not stop.
You will need frequent "INR" or prothrombin time tests (to measure your blood-clotting time and determine your warfarin dose). You must remain under the care of a doctor while taking Coumadin.
If you receive Coumadin in a hospital, call or visit your doctor 3 to 7 days after you leave the hospital. Your INR will need to be tested at that time. Do not miss any follow-up appointments.
Tell your doctor if you are sick with diarrhea, fever, chills, or flu symptoms, or if your body weight changes.
You may need to stop taking Coumadin 5 to 7 days before having any surgery, dental work, or a medical procedure. Call your doctor for instructions.
Wear a medical alert tag or carry an ID card stating that you take warfarin. Any medical care provider who treats you should know that you are taking this medicine.
Store at room temperature away from heat, moisture, and light.
 Detailed Coumadin dosage information
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose can cause excessive bleeding.
