Who is responsible for providing this complete understanding of Vedic medicine?

The complete knowledge of Ayurvedic medicine has been mentioned in the Ayurvedic texts written by our ancient sages and priests who learnt this science directly from God and then wrote various books and epics.

Charak Samhita is the oldest and most widely acclaimed book on Ayurvedic medicine while Sushruta Samhita is the most advocated book on Ayurvedic surgery.