A collection of information about drugs. Under the Federal Food, Drug, and Cosmetic Act, standards for strength, quality, and purity of drugs are those which are set forth in one of the three official compendia: the United States Pharmacopeia, the Homeopathic Pharmacopeia of the United States, the National Formulary, or any supplement to any of them. Since the mid- 1960″s, publication by the FDA of a compendium has been proposed which would compile the labeling of all marketed drugs, to improve the amount and quality of information on drugs that is available to physicians or pharmacists as an aid in prescribing or dispensing. The compendium would consist of one or more volumes and would probably resemble an expanded version of the popular Physicians’ Desk Reference, a private compendium in which drug manufacturers must purchase space and which does not provide information on all drugs.