Maranathai Vendra Kayakalpa Siddhargal - Tamil

The book hails the attributes of Kayakalpa which enhance longevity and the role of Siddhars or practitioners of Siddha medicine in drafting techniques to promote longevity. Kayakalpa also rejuvenates the body by reversing the effects of aging, improving health, and restoring vitality. Besides, the Kayakalpa is also renowned for enhancing a sharper mind and improved cognitive function.

The author elaborates methods like herbal concoctions, dietary restrictions, yogic practices, purification techniques and alchemy used by Siddhars to procure the desired results while treating humans. Though the effectiveness of some of these methods is debatable, a few require the mandatory supervision of seasoned Siddha practitioners before being executed.