Virechana is the administration of purgative substances for the cleansing of pitta through the lower pathways. Give virechana 3 days after vamana. If vamana is not indicated for a particular individual, then give virechana. In either case, it is necessary to first do 3 days of internal oleation, and preferably both snehana (oleation) and svedana (sweating), which are purva karma. Virechana cleanses blood toxins, the sweat glands, kidneys, stomach, small intestine, colon, liver, spleen, and rakta vaha srotas.