This book is meant for the student of B.PHARMA 3rd semester according to the syllabus based on 'Pharmacy Council of India'. This textbook introduces details of Biopharmaceutics Pharmacokinetics in systematics in a systematic way with exercise at the end of each chapter. Chapters 1 to 3. introduce absorption, distribution, metabolism, and excretion of drugs. Chapter 4. Details On Bioequivalence. Chapter 5. Illustrates different pharmacokinetic parameters and compartment models. Chapter 6. Describes multi-compartment models. Chapter 7. Details on non-linear pharmacokinetics.