Brand: Source Naturals

CapsuleOther CombinationsOn Market
Click to view full label

Net Contents

120 Capsule(s)

Serving Size

3 Capsule(s)

Servings Per Container

40

Supplement Form

Capsule

Bar Code (UPC/SKU)

0 21078 02136 0

Product Version

SN2136 REV B191-A

Label Analysis

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

8Active Ingredients

8 distinct active ingredients are disclosed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

3% Daily Value Coverage

3 ingredients report a %DV; 2 meet or exceed 100% DV.

1Dietary Attributes

Label states: Gluten-Free.

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

Allergen Guide

Contains

  • Milk
  • Egg
  • Wheat
  • Soy
  • Gluten

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.

Supplement Facts

Serving Size: 3 Capsule(s) · 3 per day

IngredientAmount Per Serving% Daily Value
Calories10 Calorie(s)
Vitamin B6(Pyridoxine Hydrochloride)8 mg400%
Vitamin B12(Cyanocobalamin)353 mcg5883%
Zinc(Zinc Citrate)3 mg20%
L-Leucine900 mg
L-Isoleucine450 mg
L-Valine450 mg
L-Glutamine400 mg

Not Present

Amino Acid Profile

4 amino acids detected on the label, including 3 essential and 3 branched-chain (BCAA). Bars show the disclosed amount per serving; total mapped amino acids ≈ 2.2 g.

Essential amino acidNon-essential

Other Ingredients

GelatinSilicaMagnesium Stearate

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy FreeSugar Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use: 3 capsules three times daily with meals.

Warnings & Precautions

Precautions re: Pregnant or Nursing or Prescription Medications

Caution: If you are pregnant, may become pregnant, breastfeeding, or have any pre-existing health condition, consult your health care professional before using this product.

Precautions re: All Other

Do not use if either tamper-evident seal is broken or missing.

Precautions re: Children

Keep out of the reach of children.

Storage

Storage

Store in a cool, dry place.

Formulation

Formula re: Contains

Branched-chain amino acids with L-Glutamine, Zinc, B-6 & B-12

Formulation re: Other

Source Naturals BCAA provides support to your body's muscular systems with a vigorous blend of branched-chain amino acids and supporting B vitamins. Research has shown that during exercise, branched-chain amino acids are metabolized directly in the skeletal muscle-a process that provides robust musculoskeletal fortification when your body needs it the most. Combined with vitamin B-6 and B-12 for optimized protein synthesis, BCAA may also increase energy and reduce occasional fatigue in support of your active lifestyle.

Formulation re: Does NOT Contain

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavor or fragrance.

FDA Statements

FDA Statement of Identity

Dietary Supplement

FDA Disclaimer Statement

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.

Manufacturer & Distributor

Distributor

Source Naturals, Inc.

P. O. Box 2118, Santa Cruz, CA, 95062

Market Reference

$9.21 – $49.95· 26 listings
  • BCAA Source Naturals

    Herbs Direct4.2(5)
    $9.21Lowest
  • Source Naturals L Leucine

    iHerb4.8(136)
    $14.43
  • Source Naturals Amino Athlete 1000 mg 100 Tablet

    PureFormulas.com4.8(120)
    $10.15
  • Source Naturals Amino Strength Tablets

    PureFormulas.com5.0(1)
    $9.79
  • Best Naturals BCAA Powder

    Target4.5(2)
    $14.99
  • Best Naturals BCAA 800 mg 200 Capsules

    Walmart4.7(66)
    $19.99
  • BCAA COMPLEX Stance Supplements

    Nutrishop Boca Raton4.7(92)
    $49.95
  • BCAA Natural Powder

    FitLife Brands4.6(7)
    $42.99

Where to Buy Locally

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Research & Studies

  • Branched-chain amino acids from plants and the metabolic syndrome: pathways and pharmacological applications

    S Wang, Y Liu, G Sun, X Liu, Y Sun, Y Ma, S Ning… - Frontiers in …, 2026 - frontiersin.org

    … The purpose of this review is to provide a systematic overview of how BCAAs from plant sources may modulate chronic inflammatory processes and improve individual components of …

    2026
  • The utility of algae as sources of high value nutritional ingredients, particularly for alternative/complementary proteins to improve human health

    JY Wu, R Tso, HS Teo, S Haldar - Frontiers in nutrition, 2023 - frontiersin.org

    … amino acids (BCAAs)–namely leucine, isoleucine, and valine–demonstrate comparable levels to soy and eggs, making them a promising protein source for muscle health promotion. …

    2023157 citations
  • BCAA Metabolic Dyshomeostasis in Cardiovascular Disease: Pathogenic Mechanisms and Intervention: Y. Yin et al.

    Y Yin, H Li, Q Hu, D Wu - American Journal of Cardiovascular Drugs, 2026 - Springer

    … BCAAs extends beyond their nutritional function; their metabolism and intermediate products are closely linked to cardiovascular health… pathological roles of BCAA metabolic imbalance …

    20262 citations
  • New functions and potential applications of amino acids

    H Uneyama, H Kobayashi, N Tonouchi - Amino Acid Fermentation, 2016 - Springer

    … BCAA supplementation is highly encouraged for allowing people to lead healthier lives in … It was found that BCAA supplementation to such patients improved the nutritional status and …

    201636 citations
  • Dietary supplements and sports performance: amino acids

    M Williams - Journal of the International Society of Sports Nutrition, 2005 - Taylor & Francis

    … BCAA supplementation has been studied for its effects on … One investigator concluded that BCAA supplementation … that in some situations BCAA supplementation may improve physical …

    2005269 citations
  • Metabolomics perspectives on natural product interventions for alleviating cardiovascular risks

    WY En, TS Wern, AK Mandal… - Asian Pacific Journal of …, 2026 - journals.lww.com

    2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-02-26. DSLD Label ID: 209439. 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.