EAST NORTHPORT, N.Y. (CBSNewYork) — The U.S. Food and Drug Administration has issued a warning about vitamins sold from a Long Island-based company.

At least 29 people were sickened by Purity First Health Products’ B-50 vitamin supplement because of traces of anabolic steroids, the FDA said. The product is sold in stores and online.

Candice Tripp, the owner of the company which is headquartered in East Northport, told WCBS 880’s Sophia Hall she has been in business for over 20 years and finds it hard to believe the product was dangerous.