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L-Tyrosine

product on market Capsule Designs for Health Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

L-tyrosine is a precursor to dopamine and norepinephrine, while vitamin C supports antioxidant functions and neurotransmitter synthesis. Research evidence for these ingredients is generally moderate, though overall evidence coverage for this specific formulation is limited. The profile maintains a high safety score.

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

2 Capsule(s)
Serving Size
60
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
100 mg (170% DV)
1200 mg
Market median: 500.0mg (223 products) 24 studies (A:0, B:1)

Other Ingredients

Microcrystalline Cellulose Vegetable Stearate Silicon Dioxide
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Recommended Use: As a dietary supplement, take two capsules per day on an empty stomach, or as directed by your health care practitioner.

Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

Formulation Notes

Does not contain gluten.

Additional Information

Notice: Color, size or shape may appear different between lots.

TYR120

For Professional Use Only

Guaranteed GMP COMPLIANT Products

Manufactured in an NSF GMP Registered Facility

STORE IN A COOL, DRY PLACE.

Metadata

Product Details

UPC / SKU8 79452 00382 8
DSLD Entry Date2013-06-25
Product TypeOther Combinations
FormCapsule
BrandDesigns for Health
DSLD ID22790
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.