Dosage Calculations, Pharmacology & Drug Guides

Learn about prescription drugs and over-the-counter medicines. Includes side effects, dosage, special precautions, and more. Browse dietary supplements and herbal remedies to learn about their effectiveness, usual dosage, and drug interactions.

The Manuals have partnered with Elsevier to provide high-quality drug information from the Gold Standard Drug Database.

Official drug information site from PDR, allowing healthcare professionals FREE access to the current drug prescribing information available. Also available as a downloadable app.

This website provides dosage calculations tutorials.

Authored by the Nursing Faculty of Chippewa Technical College. This open access Nursing Pharmacology textbook is designed for entry-level undergraduate nursing students. It explains basic concepts of pharmacology and describes common medication classes. This book is not intended to be used as a drug reference book, but direct links are provided to DailyMed, which provides trustworthy information about marketed drugs in the United States.