Nattu Marunthukal is a valuable book on Siddha medicine in Tamil language, authored by Late பூவை எஸ் ஆறுமுகம், a well-known literary figure in Tamilnadu. The book has been nationalized by the Govt. of Tamilnadu, making it accessible to everyone.

The program is a reproduction of the book in digital format, with an index for easy access through the database. It covers several remedies for infants and grownups, with directions for finding the pulse, quality, and symptoms of various நாடி. The book is a valuable resource for anyone interested in Siddha medicine.

Overall, Nattu Marunthukal is a must-have for those who want to learn and understand Siddha medicine and its remedies. The digital format provides easy access and convenience for users.