🟢 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

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

Supplement Facts — Evidence Check

Calories
20 Calorie(s)
918 mg
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 918mg
888 mg
📊 Market median: 500.0mg (159 products)
Median 500.0mg This product: 888mg
L-Phenylalanine
751 mg
L-Valine
518 mg
L-Threonine
466 mg
442 mg
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 442mg
432 mg
📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews
This product: 432mg
L-Histidine
319 mg
117 mg
📊 Market median: 500.0mg (70 products)
Median 500.0mg This product: 117mg

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 Halal Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested usage: Mix 2 1/4 level teaspoons with 8 oz. of juice or your favorite beverage once daily. Taking with juice or other beverage is recommended due to bitter taste of free-form amino acids.

⚠️ Warnings & Precautions

Caution: For adults only. Keep out of reach of children.

Consult physician if pregnant/nursing, taking medication or have a medical condition [e.g. liver disorders or phenylketonuria (PKU)].

Do not eat freshness packet enclosed.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

🧪 Formulation Notes

Amino acids are the subunits that make up proteins. They are necessary for the function of all cells, for tissue repair, and for the production of enzymes and neurotransmitters. The body uses 20 amino acids to construct proteins, but nine "essential amino acids" cannot be made by the human body and must be supplied by the diet in order to achieve proper protein synthesis and maintain overall health. People with limited diets or poor digestion may not get enough essential amino acids from their diet. In contrast to proteins or peptide-bound amino acids, NOW Sports Amino-9 Essentials has all 9 essential amino acids in their superior free-form state and in the proportions recommended by the National Academy of Sciences to optimize protein synthesis and tissue repair for adults age 19 and over.

Crescent H (Halal)

Triangle K (Kosher)

Amino acids Pure aminos 9 essential amino acids Protein building blocks

Steroid tested Non-GMO

Packaged and quality tested in the USA.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.

Natural color variation may occur in this product.

Additional Information

Crescent H (Halal) GMP Quality Assured Triangle K (Kosher)

This product is sold by weight not volume. Store in a cool, dry, dark place after opening.

Product Details

UPC / SKU 7 33739 00206 8
DSLD Entry Date 2024-11-22
Product Type Amino acid/Protein
Form Powder
Brand NOW Sports
DSLD ID 314237
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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