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L-Tyrosine

product on market Capsule Pure Encapsulations Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · grounded in 1 source · methodology

L-Tyrosine is a precursor to dopamine and norepinephrine, often used to support cognitive function during stressful conditions. There is moderate evidence suggesting it may improve alertness and mental performance under acute stress. The ingredient is generally well-tolerated and considered safe for most healthy adults.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for L-Tyrosine
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
90
Servings
Amino acid/Protein
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

500 mg
Market median: 500.0mg (223 products) 24 studies (A:0, B:1)

Other Ingredients

Cellulose Water
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Recommendations: As a dietary supplement, take 1 capsule, 1-4 times daily, between meals.

Warnings & Precautions

Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.

Keep out of the reach of children.

Use only if safety seal is intact.

Formulation Notes

GFCO.org (Gluten-Free Certification Organization) Certified Gluten-Free by the Gluten-Free Certified Organization www.gluten.org

Supports dopamine synthesis for emotional wellness and cognitive function

Gluten-Free, Non-GMO & Hypoallergenic

Gluten-Free, Non-GMO & Hypoallergenic

Additional Information

Store in a cool, dry place.

Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity. Scan to learn about our hypoallergenic supplements

GFCO.org (Gluten-Free Certification Organization) Certified Gluten-Free by the Gluten-Free Certified Organization www.gluten.org

Metadata

Product Details

UPC / SKU7 66298 01637 5
DSLD Entry Date2023-11-22
Product TypeAmino acid/Protein
FormCapsule
DSLD ID299062
Data Updated2026-04-11
Research

Research Evidence

50
Research Sources
47
Avg Quality
28
Rct
13
Clinical Trial
5
Guideline
4
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
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.