Rasa Shastra is the pharmaceutical branch of Ayurveda. As like any other medical system, success of Ayurvedic treatment also depends upon quality of medicine prescribed to the patient. The integral part of Rasa Shastra lies in the successful pharmaceutical process. Rasa oushadis are the potent Ayurvedic preparations mainly containing metals and minerals. These Oushadis possess wide range of therapeutic efficacy and are considered superior because of their qualities like small dose, quick action, palatability and longer shelf life. Switrari Yoga is an important Rasaoushadi described in Rasa Tantra Sara Va Siddha Prayoga Sangraha Part 2 Kustha Prakarana which contains Shuddha Gandhaka, Shuddha Bhallataka (Semicarpus anacardium),Harithaki, Vibhitaki, Amalaki, Bhringaraja, Nimba beeja The pharmaceutical procedures adopted in this study are Shodhana, Churna Nirmana and preparation of capsule of Switrari Yoga. The specific pharmaceutical blend of these contents can result in a more effective formulation. Till now, no research work has been carried out to standardize this formulation. Therefore the present study has been planned to standardize the method of preparation of Switrari Yoga according to the method explained in the classical literature.
