The main authentic texts of Ayurveda in its early History

	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. 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 Charaka Samhita CA.600 Years Before.Common era.: A major work on internal medicine , written by the physician Agnivesa, modified by charaka 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. Samhitas of Vagbhata CA.600 Years A.D. : This text deals with all aspects of life, health, disease and treatment.
	It is because these texts  contain the original and comlete knowledge of life, Ayurveda is known today as the only complete medical system still in existence.