Not all supplements are good for you

Pay attention to your supplement suppliers. They are not regulated, and could be harmful. DNA testing of the product showed ". . . five out of six products tested did not contain the herb on their label, and that many contained cheap filler, like powdered rice, beans and houseplants, not listed. Some products even showed powered legumes, a plants class that includes peanuts and soybeans, which could harm people with allergies. " Good to know those retailers are removing them.

http://www.care2.com/greenliving/how-to-avoid-buying-fake-herbal-supplements.html

A.G. Eric Schneiderman has sent “cease & desist” letters to four major retailers – GNC, Target, Walmart and Walgreens – ordering them to stop selling certain popular products, including Echinacea, Ginseng, St. John’s Wort, and others until they could “provide detailed information relating to the production, processing and testing of herbal supplements sold at their stores, as well as set forth a thorough explanation of quality control measures in place,” a statement said.