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L-Tyrosine Caps 500 mg

product on market Capsule Country Life 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 under stress. Vitamin B6 acts as a cofactor in the synthesis of these neurotransmitters. Research providing evidence for these effects is generally limited to specific contexts like acute stress or sleep deprivation.

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

Label

Product Label

Label for L-Tyrosine Caps 500 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
Other Combinations
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

8.5 mg (500% DV)
6.5× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
500 mg
Market median: 500.0mg (223 products) 24 studies (A:0, B:1)

Other Ingredients

Cellulose Magnesium Stearate Silica
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Adults take one (1) capsule daily, or as directed by your health care provider.

Warnings & Precautions

As a reminder, discuss the supplements and medications that you take with your health care providers. Caution: If you are pregnant, nursing, or taking medication, have a medical condition or planning surgery, consult a doctor before using this product.

Stop using and consult a doctor if any adverse reactions occur. Do not accept if seal is broken.

Keep out of the reach of children.

Formulation Notes

L-Tyrosine is an amino acid that supports the production of brain neurotransmitters dopamine and norepinephrine. Country Life uses Vitamin B6 to aid in utilization.

Yes Certified gluten-free by GFCO.org

Yes Certified Vegetarian by the AVA

Yes Kosher

Yes Certified Halal by IFANCA

No Yeast, corn or wheat No Soy, milk or salt No Sugar or preservatives No Artificial colors, flavors or sweeteners

Certified gluten-free

Includes Vitamin B6 for utilization

Additional Information

Amino acids are the building blocks of proteins.

Yes Recyclable packaging Yes Manufacturing supports wind power

This product has been manufactured at a GMP Registered facility.

Certified B Corporation GF Certified Gluten-free Ifanca Certified crescent M Halal K

Established 1971

Supports overall brain health May help support the body's response to stress

Our Pledge of Integrity Authenticity Cleanliness Freshness Consistency Accuracy

Store in a dry place between 59(0)-86(0) F.

Product No. 1455 08M18NDL

Metadata

Product Details

UPC / SKU0 15794 01455 3
DSLD Entry Date2019-05-28
Product TypeOther Combinations
FormCapsule
BrandCountry Life
DSLD ID201981
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
View all evidence for Tyrosine →
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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.