In Rasa Shastra almost all the drugs are advised to be processed with specific shodhana methods before their internal uses. As it has been observed that if metals/minerals are used in their impure form, these are likely to produce some harmful toxic effects or various diseases in the body. Thus shodhana processes are prescribed to each metal/mineral to remove physical & chemical impurities, as well as to convert mineral drugs into suitable forms for further treatment i.e. Marana process

Keywords:Media, Sodhana, Metals, Minerals.