The Adult Drug Information Handbook, the flagship publication from Lexicomp, has been the preferred drug information resource for 31 years, trusted by a wide variety of healthcare professional to deliver timely, clinically relevant pharmacotherapy knowledge. It is focused exclusively on dosing for adult patients. Endorsed by the American Pharmacists Association (APhA), the Adult Drug Information Handbook is used daily by healthcare professionals as their resource to help improve medication safety and enhance patient care. This handbook follows a dictionary-like format, with drug products for adults organized alphabetically and cross-referenced by U.S. brand names and index terms. Healthcare professionals have access to more than 1,436 drug monographs, each offering up to 40 fields of information specific to a particular medication. Supplementing the drug information is an extensive Appendix, offering helpful treatment guidelines and therapy recommendations, and a Pharmacologic Category Index.