We want you to help you be the absolute best that you can be, and you can attain your best by making sure to include L-CARNITINE in your supplement regimen! This product is proven to boost training and physique. When taken properly, with carbohydrates, it gives more endurance and bigger pumps and results in more muscle and less fat. Best time to take is post-workout with protein / carbohydrate shake. For fat loss it stacks well with THIN FAST, FAT BURN and SUGAR BUSTER. For muscle building stacks well with virtually any of these MUSCLE BUILDERS.