HMB (beta-hydroxy-beta-methylbetaine) is a derivative of the amino acid leucine, it works mainly anti-catabolic. It protects muscles from damage caused by intense physical exertion. HMB works by inhibiting protein degradation in the muscles. Which can lead to increased muscle mass and strength and increased endurance. Unfortunately, too aggressive advertising of the supplement meant that the expectations of strong growths, strong anabolic effect rested only on marketing slang. The supplement is currently not commonly encountered as a monopreparation.

Dosage: 1.5 to 3 g per day