Life Extension Creatine & Acetyl-L-Carnitine Energy Plus is a powder supplement that promotes cellular energy production for both your mind and body, helping to combat general physical and mental fatigue with 5 g of creatine monohydrate and 2 g of acetyl-L-carnitine. Creatine and acetyl-L-carnitine both support cellular energy production. Creatine has a well-deserved reputation for supporting exercise performance and body composition, while acetyl-L-carnitine has been clinically studied to encourage both mental and physical energy as well as cognitive function. Life Extension Creatine & Acetyl-L-Carnitine Energy Plus combines them both.