Warfarin or Coumadin Medication Information (dosing, side effects, patient counseling)

Your Medication Warfarin

Warfarin comes in 1, 2, 2.5, 3, 4, 5, 6, 7.5, and 10 mg tablets.

Warfarin is most commonly used to prevent blood clots and to lower the chance of a heart attack or stroke. No matter what your doctor has you taking it for, warfarin is usually taken by mouth with or without food once a day. If upset stomach occurs take warfarin with food. If you miss a dose, take the missed dose as soon as you think about it. If it is close to time for your next dose, skip the missed dose and resume your normal dosing schedule. Do not take 2 doses at the same time or extra doses.

Some common side effects with warfarin include bleeding, dizziness, tiredness, fever, headache, general discomfort, and pain.
Some less common side effects include dark blue or purple toes, gangrene of skin, or other tissue and liver problems.

While taking warfarin it is important to report bleeding, accidents, falls, or new or discontinued medications. Also, report significant changes in smoking or dietary habits. As these may require your dose to be adjusted.

While taking warfarin, remember it is important to tell your doctor or pharmacist if you:
• Have signs of an allergic reaction (rash, itching, swelling, tightness of the chest, etc.)
• Are pregnant or plan to become pregnant.
• Have any signs of bleeding problems, like bruising; black, tarry, or bloody stools; bleeding gums; blood in the urine; coughing up blood; cuts that take a long time to stop bleeding; feel dizzy; feeling very tired or weak; nosebleeds; pain or swelling; throwing up blood or throw up that looks like coffee grounds; or very bad headaches.
• Start taking new medications, vitamins, or supplements.
All forms of warfarin need to be stored at room temperature in a dry place, protected from light. Keep warfarin in a safe place out of reach of children and pets. Before throwing out any unused warfarin, check with your pharmacist about proper disposal.