Being one of the oldest medical systems, Ayurveda had a great influence on the development of world medicine. Even in ancient times, Indian medicinal plants were transported by sea and land trade routes to Parthia, the countries of the Mediterranean and Central Asia, the basins of the Caspian and Black Seas, and Southern Siberia ь and China. The main export items were spikenard, musk, sandalwood, cinnamon, aloe and other plants, and incense. The treatise “Ashtanga Hridaya Samhita”, written in the 4th century. BC e. formed the basis of the treatise on Tibetan medicine by Zhud Shi. Jurisprudence began to penetrate into the region of Tibet from the 7th century . n. e., when one of the representatives of the Bharadwaja school became the personal physician of the ruler of Tibet, Songtsen Gampo.