L-Tyrosine 500 mg

L-Tyrosine 500 mg

Swanson4.5 (1,873 ratings)
Format:Capsule Quantity: 100 Capsule(s) · 100 servings
Goals
$10.49 $0.10 per serving
iHerbLowest$10.49Amazon$19.99

Product analysis

56 out of 100

L-Tyrosine 500 mg offers an economical option with a possible role in attention during short-term stress or sleep loss. That conditional evidence does not establish a routine boost in everyday thinking.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The tyrosine preparation is unspecified, limiting a quality comparison. No special form advantage can be established.

Ingredient Transparency63

The tyrosine amount is stated, making the serving clear. Preparation details remain unspecified, limiting close comparisons.

Value For Money80

The tyrosine offers favorable value for the amount supplied. Its cost advantage does not establish better everyday attention.

Customer Satisfaction80

Customer feedback is positive across a substantial number of ratings. The responses describe satisfaction without proving cognitive benefits.

Product Focus64

The single-ingredient formula has a narrow connection to attention under strain. Any benefit is more relevant to short-term stress or sleep loss than routine daily enhancement.

Format
Capsule
Container
100 Capsule(s)
Per serving
$0.10
Customer rating
4.5 · 1,873 ratings
Report analysis

Goals

Brain Health
Brain Health
Impact
Moderate effect
B+ Ingredient FitF PathwaysC EvidenceA+ Formulation Logic
Study evidence
Tyrosine Supportive 7 studies

Ingredients

IngredientAmount per servingScore
L-Tyrosine
500 mg 84
Adults 18–50
Report overview
Tyrosine · 500 mg OverallScore84
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
500 mg of L-Tyrosine per serving is a substantial amount, with a low estimated cost per gram of tyrosine. Specific sourcing and quality details are not available. The amount and form are clearly stated.
How this ingredient is rated

Active Ingredient Quality & Bioavailability70

It uses L-Tyrosine. No specific grade, testing, fermentation or GMP claim is available in the information.
Tyrosine Chemical Form
It uses L-Tyrosine.
Purity and Sourcing Signals
No specific grade, testing, fermentation or GMP claim is available in the information.

Dose, Safety & Label Transparency100

The serving provides 500 mg of L-Tyrosine, a substantial amount, and states the amount and source clearly.
Tyrosine Dosage Adequacy
A serving supplies 500 mg of L-Tyrosine, a substantial amount.
Label Transparency and Blends
The label states the tyrosine amount and source.

Value80

The estimated cost per gram of tyrosine is low; it assigns the full serving cost to tyrosine.
Price per Gram of Tyrosine
The estimated cost per gram of tyrosine is low; it assigns the full serving cost to tyrosine.
View ingredientView products
92 Performance

L-Tyrosine 500 mg

Natural Factors
Its disclosed serving supplies 1,000 mg L-tyrosine with 50 mg calcium. The larger tyrosine amount and strong brain-health alignment provide more substantial single-serving support than the original single-ingredient tyrosine product, without making cost the deciding factor.
91 Performance

L-Tyrosine 750 mg - Extra Strength

NOW
Its focused capsule supplies 750 mg L-tyrosine per serving. The larger focused dose and strong nutrient-quality evidence make it a more capable option than the original single-ingredient tyrosine product, without making cost the deciding factor.
89 Performance

L-Tyrosine 500 mg

Jarrow Formulas
Its focused capsule supplies 500 mg L-tyrosine per serving. Its strong brain-health alignment and fully disclosed single-active design compare favorably with the original single-ingredient tyrosine product, without making cost the deciding factor.
97 Budget

L-Tyrosine Powder

Source Naturals
Its powder supplies 660 mg L-tyrosine per serving with no unrelated active ingredients. Its lower recurring cost gives it a more economical profile than the original single-ingredient tyrosine product while retaining a fully disclosed tyrosine amount.
93 Budget

L-Tyrosine

NOW
Its liquid supplies 350 mg L-tyrosine per serving across 323 servings. Its lower recurring cost gives it a more economical profile than the original single-ingredient tyrosine product while retaining a fully disclosed tyrosine amount.
90 Budget

Best L-Tyrosine 500 mg

Doctor's Best
Its veggie capsule supplies 500 mg of explicitly identified L-tyrosine across 120 servings. Only 3 eligible candidates are strictly cheaper, so this is one of the closest low-cost allowed matches to the original single-ingredient tyrosine product.
95 Value

L-Tyrosine 500 mg

NOW
Its focused capsule supplies 500 mg L-tyrosine across 120 servings. Its strong collection fit and value evidence give it a better quality-to-cost balance than the original single-ingredient tyrosine product.
86 Value

L-Tyrosine 500 mg

Solgar
Its focused capsule supplies 500 mg L-tyrosine per serving. Its focused formula and strong ingredient transparency preserve quality while offering competitive value against the original single-ingredient tyrosine product.
87 Value

L-Tyrosine 500 mg

Source Naturals
Its tablet supplies 500 mg L-tyrosine with 114 mg calcium. Its disclosed tyrosine amount and solid value evidence offer a practical balance compared with the original single-ingredient tyrosine product.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Combined L-carnosine and L-tyrosine supplementation as an ergogenic strategy for physical and cognitive performance under fatigue in professional football players.
    Bilgin S; Bozyılan E; Buzdağlı Y; Karaç Öcal Y; Gürkan O; Toktaş S; İnan H; Egil İ; Yarayan YE · Frontiers in nutrition · 2026
    Randomized trial24 participantsBrain Health forTyrosine
  2. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands--A review.
    Jongkees BJ; Hommel B; Kühn S; Colzato LS · Journal of psychiatric research · 2016
    Narrative reviewBrain Health forTyrosine
  3. Influence of nutritional tyrosine on cognition and functional connectivity in healthy old humans.
    Hensel C; Becker M; Düzel S; Demuth I; Norman K; Steinhagen-Thiessen E; Gallinat J; Lindenberger U; Kühn S · NeuroImage · 2019
    Cross-sectional study286 participantsBrain Health forTyrosine
  4. 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.
    Plini ERG; Melnychuk MC; Harkin A; Dahl MJ; McAuslan M; Kühn S; Boyle RT; Whelan R; Andrews R; Düzel S; Drewelies J; Wagner GG; Lindenberger U; Norman K; Robertson IH; Dockree PM · The journal of nutrition, health & aging · 2023
    Cross-sectional study398 participantsBrain Health forTyrosine
  5. Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating.
    Jongkees BJ · Cognitive, affective & behavioral neuroscience · 2021
    Randomized trial45 participantsBrain Health forTyrosine