I work in the substance abuse treatment field, and have used the Nursing Drug Handbook for several years. I like the organization of drugs by classes, and the descriptions (pharmacology, indications, side effects, dosages, formulations and routes of administration, interactions with other drugs) are concise and informative. Although intended for a medical context, it has served me well in my work, and my colleagues frequently borrow it when they have questions about client medications and how they relate to client substance abuse and mental/behavioral health issues. I have looked at similar items, but have found this one best suited for what I do.