🟢 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

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

Supplement Facts — Evidence Check

3 Gram(s)
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 3mg
1 Gram(s)
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 1mg
L-Valine
1 Gram(s)

Other Ingredients

Citric Acid Malic Acid Natural and Artificial flavor Acesulfame Potassium Sucralose Sunflower Lecithin FD&C Red No. 40

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) Gluten Free Dairy Free

Product Information

📋 Directions for Use

Directions for use: Shake well before each use. Add one scoop (8 grams) to 10 ounces of cold water and mix thoroughly. Drink within 30 minutes post-workout, and throughout the day as needed.

⚠️ Warnings & Precautions

Warnings: Consult your physician before using this product. Not for use by those under the age of 18 or by women who are pregnant, trying to become pregnant, or are nursing.

Not for use by those under the age of 18 or by women who are pregnant, trying to become pregnant, or are nursing.

Processed in a facility that also processes milk, egg, & soy.

🧪 Formulation Notes

Every product is transparent, filler-free, and formulated with effective doses of research-backed ingredients you can trust.

Made up of three essential amino acids - leucine, isoleucine, and valine - BCAAs promote muscle growth and recovery. We've included them in a 3:1:1 ratio, compared to many other BCAA products' 2:1:1 ratio, because of leucine's superior anabolic potential.

Gluten and soy free

No wheat, dairy, soy, tree nuts, peanuts.

Additional Information

A signature is a promise. A symbol of your identity. Your mark on the world. Bodybuilding.com was founded on a single promise: Trust. It's who we are and it's in our blood. Our Signature line is built on the same promise.

We create the highest quality supplements, so you can focus on leaving a mark of your own.

Made in USA

Manufactured in the USA in a GMP registered facility with domestic and international ingredients. Contents may settle. Packed by weight, not by volume.

Promotes muscle growth Fuels your workout Reduces muscle breakdown About 30 servings Naturally and artificially flavored

BBCOM776 - 160518 - V7

Product Details

UPC / SKU 8 53002 00776 4
DSLD Entry Date 2019-02-25
Product Type Amino acid/Protein
Form Powder
DSLD ID 200054
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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