Bishop's Weed

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How does Bishop's Weed work?

Bishop's weed contains several chemicals, including methoxsalen, a chemical used to make a prescription medication for the skin condition psoriasis.

Are there safety concerns?

There isn't enough information to know if bishop's weed is safe. When taken by mouth, bishop's weed might cause nausea, vomiting, and headache. Some people are allergic to bishop's weed. They can get a runny nose, rash, or hives. There is also some concern that bishop's weed might harm the liver or the retina of the eye.

Bishop's weed can cause skin to become extra sensitive to the sun. This might put you at greater risk for skin cancer. Wear sunblock outside, especially if you are light-skinned.

Do not use bishop's weed if:
  • You are pregnant or breast-feeding.
  • You have liver disease.
  • You are scheduled for surgery in the next two weeks. Bishop's weed might increase the risk of bleeding.

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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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