Katak / Clearing Nut (Strychnos Potatorum)- Ayurvedic Properties, Effects On Doshas & Dosage Description Ayurveda is the oldest science in the world that helps the human body to regain its strength and to promote longevity with proper maintenance. This path has been developed many years ago by the rishi-munis in various treatises and manuscripts in which various modes and means are included such as various herbal medicines, proper diet, and a healthy lifestyle. Ayurveda says unique facts that should be