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L-Tyrosine

product on market Capsule SuperiorLabs 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 an amino acid that serves as a precursor to neurotransmitters like dopamine and norepinephrine. Moderate evidence suggests it may help maintain cognitive performance during stressful conditions. However, overall evidence coverage for this specific formulation is limited.

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
120
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 Rice Husk
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, adults take 1 capsule twice per day or as directed by your health care practitioner. Best when taken with a meal.

Warnings & Precautions

Caution: Do not exceed recommended dosage.

Please consult a physician before consuming this product if you are pregnant or nursing, taking medication or have a medical condition.

Not intended for use by individuals under the age of 18. Keep out of reach of children.

Do not use if safety seal is damaged or missing.

Formulation Notes

L-Tyrosine supports alertness and energy. It helps maintain brain function and physical performance. Superior Labs L-Tyrosine capsules contain 500 mg pure L-Tyrosine, with absolutely no magnesium stearate, dioxides, preservatives, or other potentially harmful artificial ingredients of any kind.

Metal Safe Heavy Metal Tested

Optimal absorption Pure and potent Boosts energy Supports mental clarity Promotes alertness Supports brain function This product is formulated, developed and manufactured in an Food and Drug Administration-registered and GMP-compliant facility and is 3rd party inspected by a leading compliance authority for superior quality assurance.

Amino acid

Does not contain: magnesium stearate, dioxides or any potentially harmful ingredients of any kind.

Additional Information

Store in a cool, dry place.

Metal Safe Heavy Metal Tested GMP Compliant Facility Manufactured in the USA with globally sourced ingredients

Metadata

Product Details

UPC / SKU8 50569 00610 0
DSLD Entry Date2025-09-25
Product TypeAmino acid/Protein
FormCapsule
DSLD ID338187
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.