I just bought a container of Amino-Tech and took 20capsules b4 my workout today... with my preworkout meal (5 eggs with 2 peices of wheat bread)... no creatine, beta-alanine, arginine... nothing... well i did drink a ton of coffee but thats no different than usual... my endurance was the best its ever been... i got 225 for 23 reps and 185 for 32 reps (today is my lightweight day)... it was incredible... very pleased with the outcome of this product... its simple yet very effective... not sure how it will perform with heavy weight though...So good job Universal