A member asked:

Does provigyl contain sulfur i am allergic to sulfur drugs and i have been on provigyl for years but now developing blisters on my hands

2 doctors weighed in across 2 answers
Dr. Marvin Den answered

Specializes in Internal Medicine

Need : Need more information. Are you on any other drugs? Have you had any other exposures? Would consult a dermatologist first.

Answered 10/3/2016

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No: Most people are allergic to sulphonamides, or sulfa medications, not medications that contain sulfur, which is different. Provigil does not contain a sulfa group and so would not be related to your sulfa allergy. However, very severe rashes have been associated with provigil, and this could be a different type of reaction. You should see your doctor immediately.

Answered 10/4/2015

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