ArshKuthar Ras is an Ayurvedic medicine in tablet form. It is a Ras Aushadhi of Ayurveda. Mercury is known as Rasa in Ayurveda and medicines that are prepared using purified mercury purified Sulphur bhasma etc. are named Ras aushadhi (Mercurial Preparations). In preparation of Ras aushadhi/medicine first Kajjali is made from purified parad and gandhak. As these medicines contain heavy metals it is better to take them as prescription drugs. In preparation of Ras aushadhi/medicine first Kajjali is made from purified parad and gandhak. As these medicines contain heavy metals it is better to take them as prescription drugs.