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L-Leucine

  • 5g of L-Leucine per Serving
  • Primary Branched Chain Amino Acid (BCAA) critical in muscle tissue structure
  • Manufactured Through Fermentation (Sunflower)
  • Non GMO, Vegan Friendly, Gluten Free
  • Made in the USA in a GMP Compliant, FDA Registered Facility

Choose Your Size / Flavor

500g $0.25/serving 100 Servings
$23.70 $24.95

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L-Leucine

Leucine is one of the three Branched Chain Amino Acids and sometimes referred to as the 'main' amino acid due to the most popular benefit of BCAAs (muscle building) being mostly due to leucine.


Leucine is an essential branched chain amino acid, alongside Isoleucine and Valine, and is most effective in activating the protein synthesis inducing mTOR pathway. This makes Leucine an important supplement in any muscle building stack. Nutricost has designed a simple, affordable, high quality L-Leucine powder that can be easily mixed with your pre or post-workout formula.


Research has shown that Leucine is incredibly successful at promoting protein synthesis via activating the mTOR pathway at lower concentrations, and at higher concentrations preserving muscle. Whether you’re an athlete looking to build and hold onto your hard earned gains, or an individual battling chronic health conditions that involve muscle wasting, Leucine can be extremely beneficial.


Leucine has also been known to stimulate insulin secretion from the pancreas, by regulating other competing influencers that may suppress insulin signaling. Insulin secretion is especially important for those looking to build muscle. Muscle fibers are lined with insulin receptors, and when insulin activates the receptor, the responding muscle cells allow glucose, amino acids, and Creatine to enter. This makes Leucine and other BCAAs a staple in any body building regimen.

Nutricost Leucine is high quality, non-gmo, vegan and is manufactured through fermentation (sunflower).

†*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.