100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
Limited research evidence available for ingredients

B Label Compliance Grade

Label

Product Label

Open Full PDF View on NIH DSLD →

Details

Label Data

6 Capsule(s)

Serving Size

Servings

Amino acid/Protein

Product Type

Evidence Coverage

Ingredients

Supplement Facts — Evidence Check

Leucine

1350 mg

Market median: 17.4mg (161 products)

Valine

900 mg

Isoleucine

750 mg

Market median: 17.4mg (161 products)

Other Ingredients

Leucine Valine Isoleucine Gelatin

Claims

Label Claims — Verification

Unverified All Other

Info

Product Information

Directions for Use

Adults 17 or more years of age: 6 capsules daily or as directed.

Warnings & Precautions

Store out of reach of young children.

Dietary supplements/food supplements should not be used as a substitute for a varied diet. Do not exceed the stated recommended daily dose.

Formulation Notes

Made in the USA.

Additional Information

Store in a dry, cool place.

Nominal weight: 60 g

Metadata

Product Details

UPC / SKU7 640116 929869

DSLD Entry Date2020-06-24

Product TypeAmino acid/Protein

FormCapsule

BrandDr. Clark Research Association Dr. Clark Zentrum

DSLD ID223141

Data Updated2026-04-11

Research

Research Evidence

Research Sources

Avg Quality

Rct

Clinical Trial

Guideline

Systematic Review

A Using a Novel Consensus-Based Chemoinformatics Approach to Predict ADMET Properties and Druglikeness of Tyrosine Kinase Inhibitors.

Guideline International journal of molecular sciences 2025 PubMed DOI

B Australia and New Zealand consensus statement on the cardiovascular management of patients with chronic lymphocytic leukaemia treated with Bruton's tyrosine kinase inhibitors.

Guideline Internal medicine journal 2025 PubMed DOI

B Branched-chain amino acid supplementation for improving growth and development in term and preterm neonates

Systematic Review The Cochrane database of systematic reviews 2020 PubMed DOI

B [Clinical practice guideline on anaplastic lymphoma kinase-tyrosine kinase inhibitors for non-small cell lung cancer (2025 edition)].

Guideline Zhonghua zhong liu za zhi [Chinese journal of oncology] 2025 PubMed DOI

B [Chinese expert consensus on epidermal growth factor receptor tyrosine kinase inhibitors for the treatment of non-small cell lung cancer (2025 edition)].

Guideline Zhonghua yi xue za zhi 2025 PubMed DOI

B Consensus Guideline for the Diagnosis and Treatment of Tyrosine Hydroxylase (TH) Deficiency.

Guideline Journal of inherited metabolic disease 2025 PubMed DOI

B Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating

Rct Cognitive, affective & behavioral neuroscience 2020 PubMed DOI

B Effect of Amino Acid Supplementation on Iron Regulation after Endurance Exercise

Rct Nutrients 2023 PubMed DOI

C Attenuating Muscle Damage Biomarkers and Muscle Soreness After an Exercise-Induced Muscle Damage with Branched-Chain Amino Acid (BCAA) Supplementation: A Systematic Review and Meta-analysis with Meta-regression

Systematic Review Sports medicine - open 2024 PubMed DOI

C The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review

Systematic Review Plant foods for human nutrition (Dordrecht, Netherlands) 2020 PubMed DOI

View all evidence for Tyrosine →

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