Tasfiyaal- dam (Blood purification) in unani perspective: A comprehensive review

Unani system of medicine, blood considered as a mixture of four akhlāt (humours) dam, balgham, ṣafrā and saudā. These humours are of a different colour, appearance, composition, physical properties, and proportion. Out of them khilt-e dam is accounts for significant mixture of components, so its red colour dominates and called dam (Blood). Due to infilteration and accumulation of fasidmadda its quality and quantity altered. The body has a natural property to clear itself but when it is in excess and simultaneously the excretory system becomes sluggish at that time blood does not purify properly. In this way kidney, liver and lymphatic system work together and help to purify the blood. In this review article a possible mechanism of taṣfiya al-dam under the concept of Unani medicine and different Unani remedies which are known for their blood purification activities discussed.