Amino Acids Torokhtiy Weightlifting Yes, the Performance Range has a higher cost per serve because it's built to replace everything else. Your current daily supp stack of 10+ supplements Iron, L Glutamine, Creatine, Protein, L Carnitine, Zinc, A Multi Ingredient Containing Carbohydrate, Proteins L Glutamine and L Carnitine Attenuates Fatigue Perception with No Effect on Performance, Muscle Damage or Immunity in Soccer Players PLOS One L Alanyl L glutamine The Renal Safety of L Carnitine, L Arginine, and Glutamine in Athletes and Bodybuilders ScienceDirect