Help build lean muscle and support your hard work at the gym with Optimum Nutrition HMB 100 mg. This dietary supplement contains 100 mg of HMB per capsule. HMB is a metabolite of leucine an essential amino acid that has been shown to support muscle growth and endurance. This energy supplement helps support muscle protein synthesis while also supporting your energy levels during exercise. Using these HMB capsules post-workout this dietary supplement will aid in post-workout recovery. Aid in muscle repair and support increased endurance with this HMB supplement. Optimum Nutrition is part of the Glanbia global nutrition group and has been setting the Gold Standard in sports nutrition for more than 30 years — helping performance-focused athletes achieve their goals. We are proud to say that we are one of the few sports nutrition companies who own and operate our own production facilities. We take as much pride and care in crafting our award-winning supplements as our consumers do with crafting their fitness accomplishments.