100% Pure L-Tyrosine

product on market Powder NutraBio 🟢 Safety: 100/100
Brand: NutraBio
🟢 100/100

This product looks safe

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

Product Label

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Label Data

1 Scoop(s) Serving Size
1000 Servings
Amino acid/Protein Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

500 mg
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 500mg

Other Ingredients

Absolutely None

Label Claims — Verification

❓ All Other
❓ Structure/Function
All Other (98% of products) Structure/Function (78% of products) Nutrient (56% of products)

Target Groups

Adult (18 - 50 Years) Kosher No Allergies Gluten Free

Product Information

📋 Directions for Use

1-2 servings - Mixed with 8-16 oz. - Favorite Beverage - Best if taken - Empty Stomach

Suggested Use: As a dietary supplement, take 1 or 2 scoop(s) mixed into your favorite beverage on an empty stomach, or as directed by your physician. This powder may clump during storage which will not effect the quality.

⚠️ Warnings & Precautions

If you are pregnant, breastfeeding, have known medical conditions (including kidney or liver disease) or are taking prescription or OTC medication(s) consult with your health care practitioner before using this product. Do not take in conjunction with MAO inhibitor drugs. Not for use by persons with a history of malignant melanoma or if bipolar, pregnant, suspect pregnancy, or lactating. Tyrosine should not be taken by those with conditions associated with increased dopamine levels such as mania and schizophrenia. this supplement may increase sensitivity to the effects of CNS stimulants. Caution is advised when taking tyrosine along with stimulants and dosages should be lowered accordingly.

Warning: Not intended for use by persons under the age of 18. Keep out of reach of children.

🧪 Formulation Notes

Non-GMO - Gluten Free - BSE/TSE Free

Allergen Free

Kosher, Hypoallergenic, Non-GMO, Gluten Free, & BSE/TSE Free.

Pharmaceutical Free Form Amino Acid

No fillers - No excipients - No additives

Free of Harmful Impurities.

Kosher, Hypoallergenic, Non-GMO, Gluten Free, & BSE/TSE Free. No added sugars, salt, preservatives, salicylates, or artificial color, flavor or fragrance.

Zero Fillers or Excipients Inferior Ingredients Banned Substances / Added Sugars Proprietary Blends Hidden Ingredients

Kosher, Hypoallergenic, Non-GMO, Gluten Free, & BSE/TSE Free.

Additional Information

Powder 1000 servings

Manufactured in a GMP & FDA Inspected Facility

Pharmaceutical Grade. HPLC Lab Tested for Potency.

TRUE LABEL FULL LABEL DISCLOSURE

OU

Store in a cool dry place

Serving scoop included (may settle to the bottom during shipping.)

Quality & purity since 1996. NutraBio manufactures in our own FDA registered & inspected GMP facility complying with FDA 21 CFR Part 111 regulations.

23291-006 B20229-002

Product Details

UPC / SKU 6 49908 23291 7
DSLD Entry Date 2015-09-25
Product Type Amino acid/Protein
Form Powder
Brand NutraBio
DSLD ID 50991
Data Updated 2026-04-11

Research Evidence

50 Research Sources
47 Avg Quality Score
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 Cochrane
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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