http://www.fda.gov/oc/buyonline/default.htm
U.S. Food and Drug Administration
Useful, easy-to-understand information about buying prescription drugs and medical products online. This Web site includes information on how to protect yourself from dangerous online practices involving the sale of FDA-regulated products; learn about FDA's enforcement efforts; find out how to spot health fraud; and get a list of answers to the most commonly asked questions about Internet drug sales and online pharmacies.