Kabasura Kudineer is a well-known Siddha medicine that consists of a whopping 15 herbal ingredients, each of them having unique characteristic features of its own. It is extensively used for boosting the lungs, improving respiratory mechanism and treating infectious conditions like cough, cold, fever and respiratory infections. Kabasura kudineer possesses strong anti-bacterial, anti-fungal, antioxidant, hepato-protective, anti-pyretic, anti-asthmatic and immunomodulatory properties. Famed as the 'King of Bitters', Nilavembu, is one such Siddha herb that has innumerable immune-enhancing properties like anti-pyretic, cholagogue, digestive, hepatoprotective and anti-inflammatory and has been used as a traditional remedy for treating various ailments in the Ayurvedic and Siddha systems of medicine as well as in Unani, Homeopathy, Chinese remedies, and tribal medicine. This book gives an insight to the phytochemistry, anti-microbial and anti-inflammatory potential of kabasura kudineer and nilavembu powder extracts.