L-Leucine®

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.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 3 Gram(s) · 1–2 per day

Not Present

• 

  L-Leucine 180 Capsules

  NutraBio5.0(17)

  $21.99
• 

  L-Leucine Powder

  N101 Nutrition4.9(23)

  $29.69
• 

  L-Citrulline Powder

  iHerb4.8(145)

  $23.99
• 

  EAA Pure NutraBio

  NutraBio4.6(64)

  $37.99
• 

  NutraBio Intra Blast

  GNC4.7(1700)

  $49.99
• 

  BCAA 2500 NutraBio

  NutraBio4.9(23)

  $27.99
• 

  NutraBio Reload Recovery

  NutraBio4.7(142)

  $44.99
• 

  NutraBio L-Carnitine

  iHerb4.8(167)

  $29.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

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• The Vitamin Shoppe

  4.4 (169)

  Vitamin & supplements store

  385 5th Ave, New York, NY 10016

  Directions(212) 532-4534

• Promix Nutrition

  4.8 (368)

  Vitamin & supplements store

  182 Mulberry St # Store, New York, NY 10012

  Directions(352) 221-9320

• Underground Nutrition

  5.0 (437)

  Vitamin & supplements store

  415 US-9 Ste 3, Englishtown, NJ 07726

  Directions(848) 233-9627

• GNC

  4.2 (277)

  Vitamin & supplements store

  134-136 Fulton St, New York, NY 10038

  Directions(212) 374-9473

• Ruesco Supplement Outlet

  4.6 (120)

  Vitamin & supplements store

  30 Eastern Ave, Somerville, NJ 08876

  Directions(908) 444-6068

• Nutri - Life Nutritional Center

  4.6 (17)

  Vitamin & supplements store

  1469 St Nicholas Ave, New York, NY 10033

  Directions(212) 740-2221

• The Vitamin Shoppe

  4.4 (103)

  Vitamin & supplements store

  257 8th Ave, New York, NY 10011

  Directions(212) 243-0086

• GNC

  4.7 (202)

  Vitamin & supplements store

  2 Pennsylvania Plaza Ste 29B, New York, NY 10121

  Directions(212) 239-1251

• Leucine pulses enhance skeletal muscle protein synthesis during continuous feeding in neonatal pigs

  C Boutry, SW El-Kadi, A Suryawan… - American Journal …, 2013 - journals.physiology.org

  Infants unable to maintain oral feeding can be nourished by orogastric tube. We have shown that orogastric continuous feeding restricts muscle protein synthesis compared with …

  201368 citations

• Leucine

  S Nutrition - 2021 - thotnutrition.com

  … medical conditions or taking certain medications should consult with a healthcare provider before taking L-Leucine supplements… • Our L-Leucine supplement is orthomolecular. This …

  20212 citations

• L-Citrulline metabolism orchestrates anti-mycobacterial immunity

  SM Lange - 2017 - rave.ohiolink.edu

  … Despite the medical and technological discoveries in the 20th century, current vaccines don’t elicit lasting protection and antibiotics are rapidly losing their edge over the infection, …

  2017

• Rodrigo Manjarín, Daniel A. Columbus, Agus Suryawan, Hanh V. Nguyen, Adriana D. Hernandez-García, Nguyet

  M Hoang - Amino Acids, 2016 - researchgate.net

  … In conclusion, when protein and energy intakes are restricted for 8 days, leucine supplementation increases muscle mTOR activation, but does not improve body weight gain or …

  2016

• Impact of prolonged leucine supplementation on protein synthesis and lean growth in neonatal pigs

  DA Columbus, J Steinhoff-Wagner… - American Journal …, 2015 - journals.physiology.org

  … prolonged enteral leucine supplementation improves lean … < 0.05); leucine supplementation increased mTOR signaling and … the capacity for leucine supplementation to enhance muscle …

  201554 citations

• Reading: 10 Best Intra-Workout Supplements of 2024 Review & Ranked

  S Theunissen - fitnessvolt.com

  … NutraBio Intra Blast is an incredibly effective intra-workout supplement designed to enhance … Per NutraBio, their supplement has been shown to improve protein synthesis in your body. …

• 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 2020-11-21. DSLD Label ID: 239044. 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.