Review on Ghana and extraction: Unveiling the pharmaceutical process in Bhaishajya Kalpana

In Ayurveda, Bhaishajya means "medicine". It refers to substances or preparations used for healing, treating diseases, and maintaining health. Kalpana means "preparation" or "formulation" refers to the method and process of creating medicinal formulations. This article aims to explore Ghana Kalpana and plant extraction processes. Ghana Kalpana, a derivative of Kwath Kalpana, involves extracting maximum water-soluble and some water-insoluble components via the Kwatha method, followed by reheating until solidified. Modern extraction techniques also bear similarities to Ghana Kalpana. This study aims to review all the literature available in classical text related to Ghana along with the various technologies of extraction.