Beta-Hydroxyl Beta-Methylbutyrate Patented Form 250mg Per Tablet Resistance training in conjunction with HMB may improve protein synthesis.* In addition, HMB plays a role in decreasing protein breakdown during resistance training.* Pro Performance® HMB gives you pure HMB blended with Monopotassium Phosphate. For more information, *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.