Siddha Medicine
This is an ancient science founded by Lord Shiva to emphasis health is the perfect state of physical, psychological, social and spiritual components of human beings. Siddha is a complete science because it have Guna vakada and Padardha Chintharmani ( Quality of drugs all the materials on the universe), Varma Sasthra (Orthopedics and neurology), Pillai pini vakadam (Pediatrics), Nanju nool etc. Not only these medical books there is many supportive knowledge for analyze the man and his surrounding like Manayadi Vakadam (Architecture), Nakshathra njanam (Astrology), Mriga Vakadam (Book about Animal Kingdom), Kampu suthram (Martial Art) etc.
Siddhars were the first to employ metals and minerals as therapeutic agents. They are using 64 pashanas 120 uparesas for drug manufacturing.