Andrographis paniculata is a herbaceous plant in the family Acanthaceae, native to India and Sri Lanka.
It is widely cultivated in southern Asia, where it is used to treat infections and some diseases, often being used before antibiotics were created. Mostly the leaves and roots were used for medicinal purposes.
Scientists have studied this herb for nearly thirty years.Andrographis paniculata, the Kalmegh of Ayurveda is an erect annual herb extremely bitter in taste in each and every part of the plant body. The plant is known in north-eastern India as