May 2, 2023 – Popular nutritional supplements could be behind your allergic reactions if no other answer seems clear. 

Allergens may be hidden in a range of supplement products, from colorings in vitamin C powders to some vitamins used in hair products and other products, Alison Ehrlich, MD, said at the annual meeting of the American Contact Dermatitis Society.

“In general, our patients do not tell us what supplements they are taking,” said Ehrlich, a dermatologist who practices in Washington, D.C. Antiaging, sleep, and weight loss/weight control supplements are among the most popular, she said. 

Surveys have shown that many patients do…


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