According to Indian mythology, Sage Dhanwantari appeared at the end of the 'Churning of the Ocean' with the sacred 'Amrit'. The Devas and the Asuras had tussled long for this nectar of immortality. Dhanwantari is known as the Physician of the Gods and in some ancient texts is even considered an earthly avatar of Lord Vishnu, the Protector.
Sage Bharadwaja is a renowned Vedic figure, whose presence is prominent in many important episodes of mythology. He is one of the three original vaidyans [physicians] to receive Ayurvedic knowledge from the Chief of all Gods, Indra. His disciple Punarvasu Ätreya founded a school of thought that focused on Kayachikitsa (general medicine). His most famous disciple is Charaka, author of the Charaka Samhita, the oldest surviving medicinal treatise on Ayurveda.
Sage Kashyapa is counted among the greatest Vedic sages in history, an important member of the legendary Saptarishi, or seven wise beings who are revered in the Vedas. His Ayurvedic school of thought focused on Kaumarbhritya (pediatrics), and is also considered important in Gynaecology and Obstetrics. He was the third Great Sage to receive the gift of Ayurvedic knowledge from Indra, the God of Thunder.