L-Leucine powder, 1 pound, by Puriva Nutrition Local pickup, or Nationwide delivery We are a brick-and-mortar retailer and sell/ship directly from our store in North Wales, PA. Ingredients Pure L-leucine powder 90 servings per pound (5 grams per serving) Sealed in an economical, no-frills container or bag We never use fillers, binders, flow agents, anti-clumping agents, surfactants, colloids, artificial flavors, artificial colors, or any other additives. L-Leucine L-Leucine is an essential amino acid, which means that the body is unable to manufacture it and must get it from food. Leucine is one of the three branched-chain amino acids, and l-leucine is considered to be the most anabolic of the three (i.