The action of drugs and their mechanisms are of immense importance to people interested in health care. In this tutorial we will examine basic mechanisms of drugs, side effects, clinical trials, and evaluation of efficacy. Students will direct the study by choosing drugs to investigate and by presenting information identifying what they need to know to understand how the drug works. The focus will be on the literature available and student presentations. Class will outline basic principles of drug design, structure, and properties of drugs, receptors, and mechanisms. A lab project is a possibility depending on the student’s personal interest.