The Premium Black Ali, Black Tongkat Ali is known as Eurycoma Longifolia. E. longifolia is generally known as an aphrodisiac. Other health benefits attributed to this plant include antimalarial, antidiabetic, antimicrobial, and antipyretic activities. There has been some scientific research carried out on E. longifolia towards analyzing its benefits. Its root, which is highly bitter (Yellow Tongkat Ali), has been used as the basis for supplements, as well as food and drink additives. However using Black Tongkat Ali, the taste is not bitter yet brings sweetness to it. As a supplement, it has been marketed for the supposed benefits of sexual health improvement, as an energy and stamina booster, for improving blood circulation, fat reduction, and as a testosterone booster. In the drinks market, it is a common ingredient for coffee and functional beverages positioned as energy drinks.