Anticoagulation Clinic
Brief Guide to Coumadin
® (warfarin) Anticoagulation Therapy

Coumadin® (warfarin) has been ordered for you by your doctor to take at home. This medication is an anticoagulant used to prevent harmful blood clots from forming in the veins, arteries, and heart. Harmful blood clots can cause a stroke ("brain attack") or a heart attack, among other things. 

It is important that patients have regular laboratory tests performed. The primary test used during anticoagulation therapy is the prothrombin time (Pro-Time) test. This test is best reported as the INR. The INR allows the doctor and pharmacist to monitor the patient's Coumadin® (warfarin) therapy and make dosage adjustments if necessary.

While taking Coumadin® (warfarin) it is very important that you: 

  • Always tell other doctors, dentists, pharmacists, or nurses that you are on Coumadin® (warfarin).
  • Always have regular blood tests (PT-INR) to check how quickly your blood is clotting. 
  • Discuss all medications (prescription, over-the-counter, herbal) with your doctor and pharmacist. Many drugs interact with Coumadin® (warfarin). 
  • Keep your eating habits and activities similar every day. 
  • NEVER "double-up" on a dose to make up for a missed dose. Keep a record of the missed dose and report it to your doctor or pharmacist at the next visit. Call your doctor if more than one dose is missed. 
  • Do not take any aspirin or aspirin-containing products. Be sure to read labels carefully or ask your pharmacist if there is any doubt. 
  • Avoid excessive amounts of alcohol. The anticoagulant effect can be increased or decreased by the intake of alcohol. 
  • Keep Coumadin® (warfarin) out of the reach of children and pets. 
  • Do not take Coumadin® (warfarin) if you are pregnant or plan to become pregnant. 
  • Notify your doctor and pharmacist if other medications are started or discontinued, or if any dosages are changed. 
  • Always carry your identification card with the correct name and dosage of your anticoagulant.

The most common side effect associated with Coumadin® (warfarin) therapy is bleeding. Watch for the following warning signs or events and call your doctor immediately if you experience any of the following: 

  • A serious fall or hard bump to the head 
  • Bleeding that does not stop, either from a cut or from your nose 
  • More bleeding than usual when brushing your teeth 
  • More bleeding than usual during your menstrual period or abnormal bleeding from the vagina 
  • A dark brown or reddish discoloration of your urine 
  • Bloody, black, or tarry stools 
  • Unusual bruising 
  • Throwing up (vomiting) or coughing up blood 
  • Fever, diarrhea, or infection 
  • Pain or swelling in your feet or legs 
  • Dizziness, trouble breathing, chest pain, weakness or fatigue 
  • Numbness, confusion, unsteadiness when walking

In case of emergency or if you have questions, please call: 962-8893


Call 317-962-8893 to schedule an appointment
Accepting new patients...most insurance accepted!