This book has been written primarily to meet the requirements of students at the undergraduate level. It has its own merits and excellences in comparison with other books. The subject matter has been written in simple and lucid language. The main aim has been on self-learning without unduly constraining the learner. The fundamentals of the subject have been explained with abundance of illustrations, diagrams, tables, and examination questions. The plan of this book is simple and study material has been arranged in nine chapters. The presentation of the topics has been made simple, elaborative, and descriptive. We have tried to present text that effectively provides a clear, accurate, and balanced view on various topics to enable the learner to grasp the fundamentals of the subjects more clearly, comprehensively, and concretely. It is expected that it will be beneficial for the students of D. Pharm./ B. Pharm., Physiotherapy, Nursing, and other students in Para-medical field.