Ayurveda grew into a respected and widely used system of healing in India. Around CA.1500 Before.Common era. Ayurveda was delineated into eight specific branches of medicine and there were two main schools – Atreya, the school of physicians, and Dhanvantari , the school of surgeons. These two schools made Ayurveda a more scientifically verifiable and classifiable medical system.People from numerous countries came to Indian Ayurvedic schools to learn this medical science.They came from China, Tibet, Greece, Rome, Egypt ,Afghanistan, Persia etc. to learn the complete wisdom and bring it back to their own countries. Ayurvedic texts were translated in Arabic and physicians such as Avicenna and Razi Sempion, who both quoted Ayurvedic texts , established Islamic Medicine.This medicine became popular in Europe and helped to form the foundation of the European tradition in medicine.In the 16th Century Europe , Paracelsus , who is known as the father of modern Western medicine, practiced and propagated a system of medicine which borrowed heavily from Ayurveda..

The main authentic texts of Ayurveda in its early History are:
1)  Rig Veda CA.3000 Years Before.Common era:Verses on the nature of existence , on nature of health and disease, pathogenesis and principles of treatment. Among the Rig-Veda are found discussions of the three doshas, Vata, Pitta and Kapha and the use of herbs to heal the diseases of the mind and body and to foster longevity.
2)  Atharva Veda CA.800 Years Before.Common era:Lists the eight divisions of Ayurveda – Internal Medicine, Surgery of Head and Neck,Opthalmology and Otorinolaryngology, Toxicology, Psychiatry, Paediatrics, Gerontology or Science of Rejuvenation and Science of Fertility.
3)  Charaka Samhita CA.600 Years Before.Common era.:A major work on internal medicine , written by the physician Agnivesa, modified by charaka.
4)  Sushrutha Samhita CA.500 Years Before.Common era. :Sushrutha , a surgeon who developed the operative techniques of rhinoplasty (plastic surgery), wrote the Sushrutha Samhita which describes a highly developed surgery.
5)  Samhitas of Vagbhata CA.600 Years A.D. : This text deals with all aspects of life, health, disease and treatment.