$32.99 $0.10 per serving
Product analysis
L-Tyrosine 500 mg combines tyrosine and vitamin B6, with potential relevance to thinking during acute stress or sleep loss. Those findings do not establish lasting brain benefits or better performance in rested adults.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality31
The tyrosine form is unspecified, and vitamin B6 form quality cannot be confirmed. That leaves the preparation quality of the compact formula uncertain.
Ingredient Transparency81
Both ingredient amounts are disclosed, so the serving quantities can be checked. Vitamin B6 is named clearly, but the tyrosine form remains unspecified.
Value For Money57
Tyrosine is favorably priced for the amount provided. The vitamin B6 comparison remains uncertain, limiting a complete view of value.
Customer Satisfaction73
Customer ratings are very positive, though the review pool is small. They do not establish improved thinking or concentration.
Product Focus79
The two-ingredient formula has a clear connection to thinking under demanding conditions. Its usefulness is context-dependent, with no established lasting benefit or improvement in rested adults.
- Format
Capsule - Container
- 300 Capsule(s)
- Per serving
- $0.10
- Customer rating
- 4.8 · 90 ratings
Goals
Impact
High effect
Vitamin B6 · 10 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Vitamin B6 (Pyridoxine Hydrochloride) | 10 mg | |
L-Tyrosine | 500 mg |
Tyrosine · 500 mg OverallScore84
500 mg of L-tyrosine per serving comes at a competitive full-serving cost per gram of tyrosine. That amount falls within the range used for acute cognitive support. No additional sourcing or purity information is indicated.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
It uses L-tyrosine, a standard form that raises tyrosine levels. No additional sourcing or purity information is indicated.
Tyrosine Chemical Form
It uses L-tyrosine, a standard form that raises tyrosine levels.
Purity and Sourcing Signals
No additional sourcing or purity information is indicated.
Dose, Safety & Label Transparency100
A serving supplies 500 mg of tyrosine. That amount falls within the range used for acute cognitive support. The individual tyrosine amount is stated.
Tyrosine Dosage Adequacy
A serving supplies 500 mg of tyrosine. That amount falls within the range used for acute cognitive support.
Label Transparency and Blends
The individual tyrosine amount is stated.
Value80
The full serving price is competitive when expressed per gram of tyrosine.
Price per Gram of Tyrosine
The full serving price is competitive when expressed per gram of tyrosine.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Combined L-carnosine and L-tyrosine supplementation as an ergogenic strategy for physical and cognitive performance under fatigue in professional football players.
- Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands--A review.
- Influence of nutritional tyrosine on cognition and functional connectivity in healthy old humans.
- Dietary Tyrosine Intake (FFQ) Is Associated with Locus Coeruleus, Attention and Grey Matter Maintenance: An MRI Structural Study on 398 Healthy Individuals of the Berlin Aging Study-II.
- Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating.
- Vitamin B12, B6, or Folate and Cognitive Function in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis.
- Relationship between serum pyridoxal 5'-phosphate concentration and cognitive function in older Japanese.
- A randomized, controlled trial to evaluate the efficacy of pyridoxine and ascorbic acid on cognitive function and quality of life in post-menopausal women.
- Lower Plasma Vitamin B-6 is Associated with 2-Year Cognitive Decline in the Boston Puerto Rican Health Study.
- Are Dietary Supplements and Nutraceuticals Effective for Musculoskeletal Health and Cognitive Function? A Scoping Review.