What should I watch for when I am taking warfarin?

While you are taking warfarin, you could have severe (sometimes life-threatening) bleeding. Call your doctor right away if you get any of the following:
  • pain
  • swelling
  •  headaches
  • dizziness
  • weakness
  • unusual bleeding or bruising
  • a cut that doesn't stop bleeding
  • nosebleeds
  • bleeding gums
  • coughing up blood
  • vomiting blood or material that looks like coffee grounds
  • increased menstrual flow or vaginal bleeding
  • pink, red or dark brown urine
  • red or tarry black stools

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.