This document summarizes information about Adhatoda vasica Nees, commonly known as vasaka, Malabar nut, or adusa. It is native to northern India and used in Ayurvedic medicine. The leaves and flowers are used medicinally and have bitter taste. It contains volatile oils and quinazoline alkaloids. Pharmacologically, it is an expectorant, antispasmodic, alterative, diuretic, and germicide. It is used to treat cough, asthma, bronchitis, tuberculosis, fever, and rheumatism. The fresh leaf juice is taken with honey and long pepper for cough and phthisis. It should be used with care in pregnancy and large doses