🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 10% of ingredients have research evidence
B Label Compliance Grade

Product Label

📸

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Label Data

1 Capsule(s) Serving Size
150 Servings
Other Combinations Product Type
10% Evidence Coverage

Supplement Facts — Evidence Check

Glycine
55 mg
48 mg
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 48mg
L-Valine
42 mg
L-Glutamic Acid
40 mg
28 mg
📊 Market median: 500.0mg (159 products)
Median 500.0mg This product: 28mg
36 mg
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 36mg
L-Cysteine
26 mg
L-Alanine
35 mg
34 mg
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 34mg
L-Serine
30 mg
L-Phenylalanine
24 mg
L-Threonine
24 mg
L-Proline
21 mg
L-Histidine
14 mg
20 mg
📊 Market median: 500.0mg (180 products) 📚 5 studies (Tier A: 0, B: 1)
This product: 20mg
18 mg
📊 Market median: 500.0mg (143 products)
This product: 18mg
📊 Market median: 2000.0mg (63 products)
Median 2000.0mg This product: 15mg
15 mg
📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews
This product: 15mg
12 mg
📊 Market median: 420.0mg (227 products)
Median 420.0mg This product: 12mg
L-Asparagine
4 mg

Other Ingredients

Vegetarian Capsule

Label Claims — Verification

All Other
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

Suggested Use: 1 capsule without food, 1 to 6 times daily or as directed by your healthcare professional.

⚠️ Warnings & Precautions

Children and pregnant or lactating women should consult their healthcare professional prior to use.

Children and pregnant or lactating women should consult their healthcare professional prior to use.

Do not use if shrinkwrap is broken or missing.

Keep out of reach of children.

🧪 Formulation Notes

Does Not Contain: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans. Contains no artificial colors, flavors or preservatives.

Additional Information

Storage: Store in a cool, dry place below 85 degrees F away from direct light. Do not freeze.

Optimal Amino Blend meets or exceeds cGMP Quality Standards. Targeted Support

Product Details

UPC / SKU 8 28054 15610 4
DSLD Entry Date 2020-01-25
Product Type Other Combinations
Form Capsule
DSLD ID 210883
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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