His work on controlling and disease prevention, particularly on Dengue and H1N1 earned him wide accolades.Dr Velayudam’s did pioneering work on Siddha drug’s effectiveness in improving the quality of life of HIV patients under the able leadership and guidance of the late Prof. CN Deivanayagam.
Dr Velayudam has published nine books to his credit. His books not only touch medicines but food, Varma, and historical aspects of the Siddha Medical System. He has written various articles in leading Tamil magazines like Dr Vigadan, Aval Vigadan, Devi, etc, and Newspapers like Dinamani, Daily Thanthi, Malai Murasu, etc which made him a household name. The various programs presented on leading Tamil channels have made Dr Velayudam, a well-known Siddha Doctor in Chennai and in general he is a known Siddha Practitioner in the Tamil speaking world. His contribution to the control and prevention of H1N1 virus in Tamil Nadu is a well-documented fact. The presentations he gave on various TV channels raised a general awareness among the mass on Dengue and Swine Flu in particular.