SCI-FIT's® HMB 2500® is 100% pure pharmaceutical grade HMB®, patented in 1990 by MTI. HMB® has been proven through repeated clinical trials to decrease protein breakdown during intense training while promoting protein synthesis. Trial after trial, the result is improvement in recovery time between training sessions resulting in gains in strength and lean mass. SCI-FIT's® HMB 2500® provides 2500mg of HMB per serving.