Dhanvantari Moorthy is considered to be the father of medicine and health. He is considered to be an Avatar(re- incarnation ) of Lord Vishnu and there are numerous references about him in the ancient Hindu scriptures like the Vedas and the Puranas.He is referred to as the physician of the Gods and the founder of what is known as Ayurvedic medicine and is the God of health and immortality. He is also said to be the first physician and surgeon and it is believed that he is the preserver of the world from all diseases.

The Dhanvantari mantra is recited to remove fears and diseases and improve health of a person.

ॐ नमो भगवते महासुदर्शनाय वासुदेवाय धन्वंतराये:
अमृतकलश हस्ताय सर्वभय विनाशाय सर्वरोगनिवारणाय
त्रिलोकपथाय त्रिलोकनाथाय श्री महाविष्णुस्वरूप
श्री धन्वंतरी स्वरूप श्री श्री श्री अष्टचक्र नारायणाय नमः॥

Which Means

" We pray to the God, who is known as Sudarshana Vasudev Dhanvantari. He holds the Kalasha full of nectar of immortality. Lord Dhanvantari removes all fears and removes all diseases. He is the well wisher and the preserver of the three worlds. Dhanvantari is like Lord Vishnu, empowered to heal the Jiva souls. We bow to the Lord of Ayurveda"