Siddha medicine is based on three principles i.e., vaatha, pittha and kaba. Respiratory diseases are occurred due to the derangement of kaba. This book describes about herbs that normalises the altered kaba and also herbs that increases or produces kaba. Besides, the usage of the herbals in various forms such as steam inhalation (vaedhu), Poultice (pattru), nasal application (nasiyam), decoction (kudineer), which are used in Siddha medicine for respiratory ailments like common cold, rhinitis, cough, asthma etc., are explained in this book. Herbal preparations mentioned in this book are simple and easy to use. The remedies mentioned in this book should be utilized on the advice of registered Siddha practitioner only.