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What are side effects of anticoagulants?

Normal side effects of anticoagulants can include:

  • Bruising
  • Prolonged bleeding from small cuts
  • Nosebleeds
  • Headache
  • Bloated or crampy stomach
  • Loss of appetite

Contact your doctor if you experience:

  • Headache that is not relieved by pain medication
  • Large areas of bruising
  • Nosebleeds that won't stop
  • Rash or hives
Donna Hill Howes, RN
Family Practitioner

Anticoagulants increase the risk of serious, even fatal, bleeding. Other side effects of warfarin and dabigatran may include nausea, vomiting, diarrhea, flatulence, cramps, and loss of appetite. 

This answer was adapted from Sharecare's award-winning AskMD app. Start a consultation now to find out what's causing your symptoms, learn how to manage a condition, or find a doctor.

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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.