At its core CreXcel delivers 5 grams of creatine monohydrate per serving - the most studied efficacious and safest form of creatine available. For anerobic performance like weight training, it's critical to have ample creatine-phosphate (PCr) stores to quickly replenish depleted ATP which can happen within seconds. While other products typically stop there or offer up a new unproven form of creatine - this is where CreXcel is just getting warmed up.