The Unani system of Medicine started in Greece and was developed by Arabs into an elaborate medical science based on the frame work of the teaching of Hippocrates (460-370 BC) and Galen(131-210 AD). Since that time Unani medicine has been known as Greco-Arab Medicine. After Hippocrates (460- 370 BC) Roman, Arab and Persian scholars enriched the system considerably, of whom Galen stabilized the foundations on which Arab physicians like Razi (850-925 AD) and Ibn Sina (980-1037 AD) constructed an imposing edice. It was introduced in India by the Mughals and soon it took rm roots on Indian soil. The system found immediate favour from [1] the masses and soon spread all over the country . Over the centuries, this system has assimilated so well in the Indian civilization that today it has become an integral part of the healthcare delivery system of India.