Updated annually, this PDR reference covers the most commonly used drugs for which no prescription is required, providing FDA-approved information on analgesics, cough and cold preparations, fever reducers, allergy medications, and more. PDR for Nonprescription Drugs, Dietary Supplements, and Herbs 2011 also contains more than 25 comparison tables for quick, at-a-glance dosing and ingredient information on hundreds of products across a range of categories.