Cassia Obtusa, more commonly known as senna, Indian senna is native to India

Cassia Obtusa, more commonly known as senna, Indian senna is native to India, Arab and tropical African countries. It is cultivated in India, Pakistan, Egypt and Sudan. The plant has been used in India for thousands of years as a laxative. It can be found in capsule and tablet form, tea bags and loose tea, as well as liquid extracts. The undiluted dried root can be found in health food stores.