Optimum Nutrition’s HMB 1000 contains pure hydroxy methylbutyrate, a metabolite of the essential amino acid L-leucine. L-leucine, the king of the BCAAs, was studied extensively in order to determine what makes it so anabolic. Research suggests that it may be from L-leucine’s HMB metabolites, which are produced when L-leucine is metabolized in the body.

HMB 1000 is recommended for over-trained bodybuilders, high-intensity athletes and those who train more than once a day. It has been shown to significantly increase protein synthesis in muscle tissue and possesses extreme anti-catabolic properties. HMB 1000 can help bodybuilders recover much faster and grow tissue at lightning fast speeds, allowing more gym time and less down time. HMB 1000 can also be used to preserve and even build lean muscle by dieters who are cutting their calories to very low levels. In other words, HMB helps build lean muscle, and whether you’re bulking, cutting or just maintaining, HMB 1000 can help you get bigger, leaner and stronger. Each capsule of HMB 1000 contains 1 gram of HMB, the highest concentration available on the market.