The excavations done in Harappa and Mohenjo-daro also reveals the existence of a civilization and medical system. The excavatory findings consisted of some siddha medicines and idols of Lord Natarajan which was worshipped as per Saiva Siddhantam which is a part of this ancient civilization. Also some vessels which were found from these places are said to be the ancient apparatus used to prepare Siddha drugs.
Hence, Siddha system or “Siddham” is the way of life which is the most ancient of all medical systems.
Years passed and this system got confined in the present Tamil Nadu, in hands of small groups of Traditional vaidhyars or practitioners. They treated the Royal kings and even provided kayakarpa treatment. Some traditional practitioners are teaching this science to their children but they have kept it confined within their families only. The secrets of preparing medicines, mode of treatment and the precious books as well as the Siddha literatures have been kept hidden by them. Even today these missing links or hidden secrets are said to be preserved in such families where this traditional system is practiced. They can’t be blamed completely for supressing these secrets. This is because of their fear of disclosing these secrets that may get misused or it may reach in the wrong hands. Hence, this medical system never flourished.
But this science was converted into a new form in Sanskrit by the Aryans and named Ayurveda. With independence, the other medical systems extended to each nuke and corner of the country.