The never-ending discussions about pros and cons of menstrual practices, restrictions and taboos highlights the difference between the blood and menstrual blood. Unlike medical science, the menstrual blood is also considered as impurity in religious and cultural context. Ayurveda describes blood as Rakta dhatu and menstrual blood - Raja or artava as upadhatu. The description of dhatus are as the building blocks of the body whereas upadhatus have different functions and considered as secondary tissue product