🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • Limited research evidence available for ingredients
B Label Compliance Grade

Product Label

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Label Data

5 Gram(s) Serving Size
80 Servings
Amino acid/Protein Product Type
0% Evidence Coverage

Supplement Facts — Evidence Check

5 Gram(s)
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 5mg

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (100% of products) Structure/Function (90% of products) Nutrient (56% of products)

Target Groups

Adult (18 - 50 Years) Kosher Women (not pregnant or lactating) Gluten Free

Product Information

📋 Directions for Use

Suggested Use: One serving (1 rounded teaspoon) 2 times per day. (Take one serving immediately after intense activity). Serving Tip: Pure Leucine by nature basically tastes neutral with a slightly tart or bitter taste and does not dissolve immediately in water. We recommend adding it to your ISOFLEX Protein shake, a flavored mix or juice such as squeezed lemon with an artificial sweetener like Stevia or Sucralose. Mixing with an electric blender is recommended. Beware: If you get cheap Leucine that dissolves instantly, you may need to be concerned about the source of your Leucine. Without additional processing, real Leucine does not dissolve easily or quickly.

⚠️ Warnings & Precautions

Warnings: Not recommended for anyone under 18.

Do not use if pregnant or nursing. Consult a healthcare provider if you have been treated for or diagnosed with a medical condition, or if you are using any medication.

Use only as directed. Do not use if seal under cap is broken.

Keep out of reach of children.

California Warning: Lead is known to the State of California to cause birth defects or reproductive harm. Consuming this product can expose you to more than 0.0000005 g of lead. For more information go to www.P65Warnings.ca.gov.

Allergen Warning: Produced in a facility that also handles milk, soy, egg, peanuts, tree nuts, fish and shellfish products.

Prop 65

🧪 Formulation Notes

ALLMAX Leucine Leucine is likely the best single ingredient supplement on the market to build hard, lean, dense muscle, fast! Leucine is an Essential Branched Chain Amino Acid (BCAA) that is known throughout bodybuilding as the ultimate muscle-builder. It's considered essential because your body cannot produce it, so it must be supplied by your diet. Leucine activates an anabolic pathway called the mTOR which stimulates muscle protein synthesis. By increasing Leucine consumption the mTOR pathway is activated and protein synthesis is increased. Simply stated, Leucine is essential for achieving a positive nitrogen balance and building lean muscle mass.

The ALLMAX Advantage: ALLMAX brings you the purest and most powerful crystalline Leucine powder with zero binders, excipients, additives or preservatives.

In the final stage of Leucine production, the result is a coarse crystalline structure. We've taken the raw crystal material and microparticulated it through a complex series of processes, resulting in perfect, ultra-fine white powder that has optimal absorption levels.

Gluten Free Tested

OU Kosher Certified

Stimulates protein synthesis Preserves lean muscle mass Promotes muscle recovery

Product of USA

Additional Information

Gluten Free Tested cGMP Registered Facility Lab Tested Every Lot OU Kosher Certified

Quality Guarantee Purity & Potency Tested

Store in a cool dry place away from sunlight.

Product Details

UPC / SKU 6 65553 20254 9
DSLD Entry Date 2022-05-19
Product Type Amino acid/Protein
Form Powder
Brand ALLMAX
DSLD ID 264136
Data Updated 2026-04-11

Research Evidence

8 Research Sources
45 Avg Quality Score
7 Clinical Trial
1 Meta Analysis
B Effects of Whey Protein, Leucine, and Vitamin D Supplementation in Patients with Sarcopenia: A Systematic Review and Meta-Analysis
Meta Analysis Nutrients 2023
C Leucine-enriched Branched-chain Amino Acid on Muscle Thickness, Interleukin-6, SOFA Score in Critical Illness
Clinical Trial ClinicalTrials.gov 2023
C The Effects of Leucine Metabolites in Performance, Body Composition and Biochemical Markers of Muscle Damage
Clinical Trial ClinicalTrials.gov 2017
C Can Supplemental Leucine Offset Disuse-induced Muscle Atrophy?
Clinical Trial ClinicalTrials.gov 2017
C Leucine Supplementation in Sarcopenic Older Individuals
Clinical Trial ClinicalTrials.gov 2019
C The Effect of Leucine on Carnitine Transport to Skeletal Muscle
Clinical Trial ClinicalTrials.gov 2016
C Hydrolyzed Casein and Whey Protein Supplementation and the Addition of Leucine to Induce Protein Anabolism in Malnourished COPD Patients
Clinical Trial ClinicalTrials.gov 2009
C Resistance Exercise Training and Amino Acid Leucine Supplementation in Frail Elderly Women
Clinical Trial ClinicalTrials.gov 2013
View all evidence for Leucine →

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