Pharmacology is the torch bearer of medical science. In depth knowledge of Pharmacology is crucial to successful practice of modern medicine. Pharmacology has progressed immensely over past century and new drugs are being added every now and then. To keep with these advancements, every doctor is expected to devote sometime for study of Pharmacology. In this small book it has been tried to summarize the enormous knowledge of Pharmacology. The text will be very useful for students of medicine as well as dentistry, paramedical students, practitioners. The book can be slipped into coat pocket interns for consultation during in hospital duties. This can be used as a textbook, reference book, practical and practice book.