Report on Feverfew Side Effects and Usage


Natural health supplements sometimes have unexpected side effects or interactions with medication that can lead to adverse reactions that are sometimes life threatening. The following is a list of cautions that you should be aware of before using Feverfew (Tanacetum parthenium). These are referred to as drug/herb interactions.

Warning 1 – Anticoagulants: Feverfew may increase bleeding risk when used concurrently with anticoagulants. Use caution when combining with ginkgo, ibuprofen, aspirin, and other NSAIDs.

Warning 2 – Antiplatelet agents: May increase the action of antiplatelet agents.

Used as a natural health remedy 1: Feverfew is used internally as an appetite stimulant and to prevent headaches.

Used as a natural health remedy 2: Feverfew is used externally as an anti-inflammatory.

Side Effects of Feverfew

The known side effects that may occur with Feverfew include:

  1. mouth ulcers from chewing leaves
  2. oral irritation
  3. GI disturbances
  4. increased heart rate

Other side effects may also occur when using Feverfew. (See form below)

As with any herb, a serious allergic reaction is possible. Seek immediate medical attention if you notice any symptoms of a serious allergic reaction. These may include a rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing.

Return to the Herb List.

For questions and answers about the side effects of herbs see the Herb Forum

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