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Side Effects of Warfarin

Picture of Andrew Bellingham

Andrew Bellingham

Pharmacist | 20+ Years | BPharm | Dip Clin Pharm

Warfarin is a medication used to prevent and treat blood clots. It is important to understand its uses to effectively manage clotting disorders and reduce the risk of serious health complications.

What is Warfarin used for?

Warfarin is used to treat various conditions, including:

  • Preventing and treating blood clots
  • Reducing the risk of stroke in people with atrial fibrillation
  • Managing artificial heart valves to prevent clotting
  • Treating deep vein thrombosis and pulmonary embolism
  • Other situations where blood thinning is necessary

Side Effects of Warfarin

Most side effects of warfarin are mild. If you have a mild rash or experience hair loss, talk to your doctor or pharmacist for advice on how to manage them.

Warfarin can increase the risk of bleeding, but it is generally a safe medication with significant benefits. While taking warfarin, you may experience some bleeding that is typically not serious and can be managed. These include:

  • Heavier and longer periods than usual
  • Slightly prolonged bleeding from cuts or wounds
  • Occasional nosebleeds lasting less than 10 minutes
  • Bleeding from gums while brushing teeth
  • Bruises that appear more easily and take longer to fade


If you experience such bleeding, continue taking warfarin but inform your doctor if it becomes bothersome or does not stop.

To find out more, visit the NHS website.

Order Your Warfarin Prescription with Healthera

If you’ve been prescribed warfarin by your doctor, then you can use your Healthera app or website to place your order online from your local pharmacy for collection or home delivery. 

It only takes a couple of minutes to set up your order and it’ll be one less thing to worry about.

To get started, simply click the button below:

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