L-Leucine Powder®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Serving Size: 1 Tbsp · 1–3 per day

Not Present

• 

  Now Foods L-Leucine Powder

  iHerb4.8(69)

  $29.39
• 

  NOW Sports L-Arginine Powder

  iHerb4.4(1100)

  $24.49
• 

  (2 pack) NOW Sports, Branched Chain Amino Acids with Leucine, Isoleucine, and Valine, Amino Acids, Powder, 12 oz., Size: 12 oz (340 g)

  Walmart - Fruitful Yield4.3(177)

  $52.24
• 

  Beyond Raw Chemistry Labs L-Leucine 30 Servings

  GNC4.4(14)

  $24.99
• 

  BCAA Blast Powder Now

  nowfoods.com5.0(4)

  $32.19
• 

  L-Leucine Supplement Boost Athletic Performance Powder

  Walmart - BulkSupplements.com4.6(165)

  $18.97
• 

  Now Foods E-Sport Reaction Chocolate Milkshake Flavor Powder

  nowfoods.com4.8(37)

  $34.99
• 

  Now Foods Amino-9 Essentials Powder

  iHerb4.5(363)

  $28.17

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• Leucine supplementation and intensive training

  A Mero - Sports Medicine, 1999 - Springer

  … A continuous intravenous infusion of l-leucine (300 μmol/min) was administered to 12 healthy females over 150 minutes. During infusion, plasma leucine levels rose 6-fold. …

  1999340 citations

• HS LABS-BCAA 2: 1: 1 INSTANT-400 g

  ADDTOW LIST - health-store.eu

  … -based ratio of 2:1:1 of L-leucine: L-isoleucine: L-valine. Be wary of BCAA supplements that contain negligible amounts of L-leucine as this is arguably the most important of all amino …

• Amino acid supplementation and impact on immune function in the context of exercise

  VF Cruzat, M Krause, P Newsholme - … Society of Sports Nutrition, 2014 - Taylor & Francis

  … sports is topical, how and which nutrients may impact health … Another immune-regulatory protein that is now receiving … the supplementation of BCAA, cellular L-leucine uptake may …

  2014234 citations

• Effects of dietary leucine supplementation on exercise performance

  MJ Crowe, JN Weatherson, BF Bowden - European journal of applied …, 2006 - Springer

  … before and after 6-week supplementation with either capsulated L-leucine (45 mg kg −1 … All participants underwent medical prescreening prior to participation in the study and ethical …

  2006213 citations

• A review: role of leucine as a sports supplement

  R Saharan, M Awasthi - J Hum Ecol, 2020 - researchgate.net

  … supplementation is currently in the scenario but more detailed studies are required on its effect on body composition, performance and health of a sports … of L-Leucine supplementation …

  20201 citations

• The Truth About Sports Nutrition

  J Sorensen - wholefoodsmagazine.com

  … John Urban, sports category brand manager at NOW Foods, … of l-leucine, a BCAA that can induce muscle synthesis. … seek professional medical advice before starting any supplement. …

• Reading BCAA and Amino Acid Labels

  What the leucine, isoleucine, and valine ratios on a BCAA label tell you, and how amino acid amounts are listed.

  VitaSuppTrack Editorial· Jun 24, 2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2014-10-10. DSLD Label ID: 37188. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.