L-Tyrosine 500 mg

L-Tyrosine 500 mg

Source Naturals4.7 (2,232 ratings)
Format:Tablet Quantity: 100 Tablet(s) · 100 servings
Goals
$10.03 $0.10 per serving
VitacostLowest$10.03Amazon$10.50Pure Formulas$11.12iHerb$11.75

Product analysis

55 out of 100

L-Tyrosine 500 mg offers good-value tyrosine that may help attention during acute stress or sleep loss, with uncertain benefit for rested users.

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

Nutrient Quality20

The tyrosine and calcium forms are unspecified. Their names alone do not establish a close comparison of preparation or absorption quality.

Ingredient Transparency63

Both ingredient quantities are stated, making serving amounts easy to check. Specific forms are missing, limiting detailed quality comparisons.

Value For Money72

The tyrosine compares favorably on cost for the amount supplied. The value of the accompanying calcium remains uncertain.

Customer Satisfaction84

Customer feedback is strongly positive across a large review base. The number of reviews gives a broader picture of satisfaction than a small sample would.

Product Focus60

The formula stays mainly centered on tyrosine and attention under demanding conditions. Evidence relates chiefly to acute stress or sleep loss, with less certainty for ordinary, rested use.

Format
Tablet
Container
100 Tablet(s)
Per serving
$0.10
Customer rating
4.7 · 2,232 ratings
Report analysis

Goals

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

Ingredients

IngredientAmount per servingScore
Calcium
114 mg
L-Tyrosine
500 mg 84
Adults 18–50
Report overview
Tyrosine · 500 mg OverallScore84
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
The serving provides 500 mg of tyrosine, within the range used for acute cognitive support, at a moderate cost for the amount. It uses L-tyrosine. No additional sourcing or purity information is specified.
How this ingredient is rated

Active Ingredient Quality & Bioavailability70

The form is L-tyrosine. No additional sourcing or purity information is specified.
Tyrosine Chemical Form
The form is L-tyrosine.
Purity and Sourcing Signals
No additional sourcing or purity information is specified.

Dose, Safety & Label Transparency100

The amount is stated as 500 mg per serving, within the range used for acute cognitive support.
Tyrosine Dosage Adequacy
The serving provides 500 mg, within the range used for acute cognitive support.
Label Transparency and Blends
The label states 500 mg of tyrosine per serving.

Value80

The cost is moderate for the stated amount of tyrosine.
Price per Gram of Tyrosine
The cost per gram of stated tyrosine is moderate.
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 tyrosine-and-calcium tablet, 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 tyrosine-and-calcium tablet, 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 tyrosine-and-calcium tablet, 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 tyrosine-and-calcium tablet 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 tyrosine-and-calcium tablet 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 tyrosine-and-calcium tablet.
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 tyrosine-and-calcium tablet.
89 Value

L-Tyrosine 500 mg

Swanson
Its capsule supplies 500 mg L-tyrosine in a focused single-active formula. Its focused formula and solid value evidence make it a practical quality-to-cost alternative to the original tyrosine-and-calcium tablet.
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 tyrosine-and-calcium tablet.
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