L-Isoleucine®

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: 1000 mg · 1–2 per day

Not Present

• 

  L-Isoleucine Powder

  BulkSupplements.com5.0(10)

  $19.97
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  BulkSupplements Hydrolyzed Whey Protein Isolate Powder

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  Hydrolyzed Whey Protein Isolate Powder

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  BulkSupplements L-Leucine Capsules

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  BulkSupplements BCAA 3:1:2 Powder

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  BulkSupplements.com BCAA 2:1:1

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  L-Leucine Supplement Boost Athletic Performance Powder

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  BulkSupplements Essential Amino Acids Powder

  BulkSupplements.com4.1(243)

  $20.97

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

Showing representative supplement & health retailers — search above for stores in your area.

• GNC

  3.7 (124)

  Vitamin & supplements store

  545 Boylston St, Boston, MA 02116

  Directions(617) 536-1226

• American Nutrition Center

  4.6 (76)

  Vitamin & supplements store

  718 Broadway, Everett, MA 02149

  Directions(617) 394-0678

• GNC

  3.4 (10)

  Vitamin & supplements store

  120 Bond Sq Space D113, Watertown, MA 02472

  Directions(617) 321-0007

• GNC

  4.1 (33)

  Vitamin & supplements store

  158 Everett Ave #6, Chelsea, MA 02150

  Directions(617) 466-4756

• Walgreens

  3.8 (182)

  Vitamin & supplements store

  24 School St, Boston, MA 02108

  Directions(617) 372-8156

• GNC

  3.9 (40)

  Vitamin & supplements store

  1245 Worcester Rd, Natick, MA 01760

  Directions(508) 655-2520

• GNC

  3.3 (31)

  Vitamin & supplements store

  45 Dodge St, Beverly, MA 01915

  Directions(978) 927-6004

• GNC

  3.4 (39)

  Vitamin & supplements store

  280 School St Ste 452, Mansfield, MA 02048

  Directions(508) 261-8707

• Adding free leucine to a balanced essential amino acid mixture suppresses intracellular transamination of isoleucine and valine in healthy older adults

  SB Knezek, MPKJ Engelen, KS Coyle, CN Perez… - Clinical Nutrition, 2026 - Elsevier

  Background Adding leucine (LEU) to protein meals enhances protein anabolism, but excess LEU reduces valine (VAL) and isoleucine (ILE) plasma concentrations. We examined in …

  2026

• Modified from a paper to be submitted to Crop Science

  I Mertz, N Christians, A Thoms - Evaluation of creeping …, 2019 - search.proquest.com

  … Nitrogen content by weight was as follows: L-leucine and L-isoleucine 10.7%, and L-valine 12% N. The commercially available AA complex GreenNCrease is a product of Ajinomoto …

  2019

• The Effects of Arginine, Guanidinoacetic Acid and Citrulline Supplementation to Reduced Protein Diets for Aged Laying Hens.

  A Nawab, TH Dao, S Sukirno, N Akter… - Animals: an Open …, 2026 - europepmc.org

  This study evaluated the effects of arginine (Arg), guanidinoacetic acid (GAA), and citrulline (Cit) supplementation in reduced protein (RP) diets on the production performance, serum …

  20261 citations

• Concentration and Production of Cryoprotective Additives from Agricultural Waste Streams and Abundant Protein Sources

  ML Fomich - 2024

  2024

• 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 2024-05-23. DSLD Label ID: 312175. 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.