Siddha medicine, traditional system of healing that originated in South India and is considered to be one of India's oldest systems of medicine. The Siddha system is based on a combination of ancient medicinal practices and spiritual disciplines as well as alchemy and mysticism

Agastyar or Agasthya, is believed to be the founding father of Siddha Medicine. Eighteen Siddhars are considered to be pillars of Siddha Medicine

Siddhars believed that a healthy soul can only be developed through a healthy body. So they developed methods and medications to strengthen their physical body and thereby their souls. They practiced intense yogic practices, including years of periodic fasting and meditation, and were believed to have achieved supernatural powers and gained the supreme wisdom and overall immortality.