Medical knowledge is constantly changing. Hardly a week passes without new research findings, new drugs and new government warnings. This authoritative guide to all the drugs and supplements available today has been completely updated and revised. It offers detailed information about more than 1300 prescription and over-the- counter drugs and supplements to help make informed, sensible decisions about a person's health. Using everyday, easy-to-understand language, it explains what each drug and supplement is, why it's prescribed, what it actually does for the body, how much to take, possible side effects, drug and food interactions, and more -- all the up-to-date information needed to heal and maintain good health.