New York Attorney General Eric Schneiderman says an ongoing investigation by his office has found numerous store brand herbal supplements aren't what their labels claim to be.
Schneiderman says Tuesday that his office has sent letters to four major retailers concerning supplements that either couldn't be verified to contain the labeled substance or that contained ingredients not listed on the label.
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The retailers are GNC, Target, Walmart, and Walgreens. The products include echinacea (eck-in-NAY'-uh), ginseng, St. John's wort, garlic, ginkgo biloba and saw palmetto.
Schneiderman asked the companies to provide detailed information on production, processing, testing and quality control for herbal supplements sold at their stores.
Walgreen's says it's removing the cited products from its shelves nationwide as the company reviews the matter with Schneiderman's office.