🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 8% of ingredients have research evidence
B Label Compliance Grade

Product Label

📸

Have a supplement label? Find it here.

Upload a photo of any supplement label to search our database of 92,312 products.

Label Data

7.6 Gram(s) Serving Size
30 Servings
Amino acid/Protein Product Type
8% Evidence Coverage

Supplement Facts — Evidence Check

Calories
25 Calorie(s)
Total Carbohydrates
1 Gram(s) (1% DV)
1.25 Gram(s)
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 1.25mg
650 mg
📊 Market median: 500.0mg (159 products)
Median 500.0mg This product: 650mg
625 mg
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 625mg
L-Valine
625 mg
L-Threonine
350 mg
L-Histidine
150 mg
L-Cystine
150 mg
L-Phenylalanine
100 mg
50 mg
📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews
This product: 50mg
30 mg
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 30mg
20 mg
📊 Market median: 500.0mg (70 products)
Median 500.0mg This product: 20mg

Other Ingredients

Flavor Citric Acid Rebaudioside A Fruit and Vegetable Juice

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) Women (not pregnant or lactating) Gluten Free

Product Information

📋 Directions for Use

Suggested use: Mix 1 scoop with at least 8 ounces of water one to two times daily or as recommended by your health-care practitioner.

⚠️ Warnings & Precautions

Tamper evident: Use only if bottle is sealed.

Warning: If pregnant or nursing, do not use this product.

Warning for California Residents Only: Consuming this product can expose you to chemicals, including lead, which are known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.

🧪 Formulation Notes

Muscle/Tendon Metabolism Foundational

Gluten free

Berry flavored amino acids with other natural flavors

Additional Information

Store tightly sealed in a cool, dry place.

NSF Certified Sport

Manufactured in the USA using US & imported ingredients

Product Details

UPC / SKU 6 93749 00464 6
DSLD Entry Date 2025-08-22
Product Type Amino acid/Protein
Form Powder
Brand Thorne
DSLD ID 337851
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 →

Compare Similar Products

View all Leucine products →