This book “Drugs in Respiratory Medicine” dealing with treatment options in various respiratory illnesses., The First Section presents information about various drugs, their mechanism of actions, indications, side effect profiles, and formulations. The Second Section deals with therapeutic guidelines for decision-making in pulmonary diseases. The latest evidence-based approach in investigations and treatment is outlined along with some clinical spectrums. The Third Section describes the preventive aspects with details of various vaccinations. Also, therapeutic window and adverse drug reactions are enumerated for increased awareness among physicians.