FDAnews
www.fdanews.com/articles/142612-fda-crackdown-on-viagra-like-supplements

FDA Crackdown on Viagra-Like Supplements

December 16, 2011
Rock Hard Weekend, a blue-and-white pill touted in ads as a source of “all-natural male enhancement,” had a secret ingredient, U.S. regulators said: A chemical almost identical to Pfizer’s Viagra. The discovery came during a Food and Drug Administration inspection that’s part of an expanding crackdown by the agency on the $28 billion supplement industry.
Bloomberg