Hera Kasees, globally known as Ferrous Sulphate or Green Vitriol, is a naturally occurring mineral salt that has been a cornerstone of the Unani and Greco-Arabic medical systems for centuries. It appears as translucent, pale-green crystals or a fine powder. In Unani medicine, it is classified as having a "Hot and Dry" (Garm-o-Khushk) temperament in the third degree. It is celebrated as the most powerful mineral agent for building blood and restoring the body's iron reserves, making it an essential treatment for disorders caused by "cold" and "pale" humors.
