Hoodia grows in Kalahari Desert. The natives in South African always bring it to suppress the hunger when they are hunting. Scientists in South Africa found that the hoodia contains a sort of substance named P57, which could directly enter into the neurocyte of sub thalamus; send signals of full blood sugar to cerebra, to provide a positive function of weight loss. P57 Hoodia also helps control the Hunger Hormone in the head to reduce the calorie intake and reduce the weight. The top concentrate rate of P57 Hoodia is proved to be 20:1 (20 times extraction).