Oklahoma Notes/Pharmacology, Second Edition, a major revision and expanded update of the first edition, is designed to serve as a study guide for a review of pharmacology preparatory to Part I of the National Board of Medical Examiners (NBME) examination. All sections have undergone significant revision. The three sections comprising the largest components of the volume - on central nervous system drugs, renal/cardiovascular/hematopoietic drugs, and chemotherapy - have been completely reorganized and rewritten. Examination questions in several instances have been updated; new questions have been added and older questions that no longer appear relevant have been removed.