Virechana is one among the panchakarma therapy in which purgation is induced by drugs to eliminate the excess of pitta dosha from the body. When pitta dosha gets increased, it causes certain types of diseases such as liver disorders, Gastritis, Skin diseases etc,. If the extent of pitta increased is less then oral medicines can be given to suppress it. But if it is increased in large extent and it has moved from its natural place to other places, then it needs to be expelled out of the body . By expelling it out, the disease gets cured, often completely.