L-Tyrosine

L-Tyrosine

Pure Encapsulations4.9 (33 ratings)
Format:Capsule Quantity: 90 Capsule(s) · 90 servings
Goals
$34.00 $0.37 per serving
VitacostLowest$34.00Pure Formulas$34.00iHerb$34.00

About this product

Free-form L-tyrosine at 500 mg provides focused catecholamine-precursor support in a convenient capsule. The preferred L-form provides a practical entry amount for acute mental strain, and value is weak because of premium pricing.

Generic sourcing offers no purity or fermentation assurance. Benefits are most relevant during acute stress, sleep loss, or demanding work rather than as broad daily brain support.

It fits adults seeking situational support for attention and working performance. Users wanting memory, structural, or long-term neuroprotective coverage need a broader formula.

Who is it for
  • adults seeking situational support for attention and working performance
  • Adults who understand the formula’s focused role
  • Users comfortable with the stated limitations
Best for
  • Acute mental-demand support
  • Situational focus support
  • 500 mg L-tyrosine use

Pros

  • Clearly disclosed 500 mg amount
  • Preferred L-tyrosine form
  • Weak because of premium pricing practical value

Cons

  • Generic sourcing offers no purity or fermentation assurance
  • Situational rather than broad brain support
  • No complementary memory or structural nutrients

Warnings

  • L-tyrosine may conflict with levodopa, MAO inhibitors, or thyroid-hormone treatment
  • People with hyperthyroidism should avoid unsupervised tyrosine use
  • Tyrosine can feel stimulating or cause digestive upset in sensitive users

Product analysis

76 out of 100
The core formula provides a clearly defined role with practical strengths. Generic sourcing offers no purity or fermentation assurance.

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

Nutrient quality89

Free-form L-tyrosine is well aligned with targeted use. The practical amount and single-active design avoid obvious dosing or filler concerns.

Ingredient transparency86

The active ingredient and its amount are clearly disclosed without a hidden blend. Full intake directions and the non-active ingredient list are not present in the supplied details.

Customer satisfaction62

The aggregate rating is very strong, but the small review base limits confidence. No detailed feedback is supplied to assess recurring complaints or purpose-specific experiences.

Value for money61

The focused formula supplies a practical amount but carries premium serving value. Similar tyrosine products offer stronger price-to-quality competitiveness.

Format
Capsule
Container
90 Capsule(s)
Per serving
$0.37
Customer rating
4.9 · 33 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 76
Gluten Free Adults 18–50
Report overview
Tyrosine · 500 mg OverallScore76
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD- Value
L-Tyrosine provides 500 mg in its clearly named free form, within the supplied 500–1,500 mg range. The saved facts do not show GMP manufacturing, purity testing, fermentation, or a named grade. The cost per gram is on the higher side.
How this ingredient is rated

Active Ingredient Quality & Bioavailability70

The standard free form is identified, but the saved facts include no source-quality claims.
Tyrosine Chemical Form
The ingredient is L-tyrosine, the standard free form described in the supplied context.
Purity and Sourcing Signals
The saved facts show no grade, purity testing, fermented source, or GMP information.

Dose, Safety & Label Transparency100

The stated 500 mg amount is within the supplied 500–1,500 mg range.
Tyrosine Dosage Adequacy
The listed 500 mg amount is within the supplied 500–1,500 mg range.
Label Transparency and Blends
The label gives the exact milligram amount as a standalone ingredient.

Value40

The cost per gram is on the higher side.
Price per Gram of Tyrosine
The cost per gram falls in the supplied higher-price range.
View ingredientView products
Loading alternative details
85 Performance

L-Tyrosine 500 mg

Natural Factors

A 1,000 mg L-tyrosine serving provides one of the most substantial focused amounts in the supplied set. Compared with the original, tyrosine dose or cognitive-support depth is stronger or more clearly targeted, though raw-material testing and complete inactive-ingredient details are not supplied.

86 Performance

L-Tyrosine 750 mg - Extra Strength

NOW

A substantial 750 mg L-tyrosine amount provides more active depth than most basic 500 mg capsules. Compared with the original, tyrosine dose or cognitive-support depth is stronger or more clearly targeted, though raw-material sourcing and purity assurance remain unspecified.

72 Performance

DopaPlus

Pure Encapsulations

Tyrosine at 1,000 mg is paired with active vitamin B6, methylfolate, mucuna, standardized rhodiola, grape polyphenols, and green-tea catechins. Compared with the original, tyrosine dose or cognitive-support depth is stronger or more clearly targeted, though mucuna-derived L-Dopa may interact with dopaminergic or antipsychotic medicines and the formula is costly to use routinely.

85 Budget

L-Tyrosine Powder

Source Naturals

Bulk L-tyrosine supplies a meaningful 660 mg amount with flexible serving adjustment. Routine cost is lower than the original, though measuring powder is less precise than using a capsule and purity testing is not supplied.

84 Budget

L-Tyrosine

NOW

Bulk L-tyrosine offers a simple, flexible format with 350 mg per listed serving. Routine cost is lower than the original, though the amount is modest and measuring bulk material is less precise than using a capsule.

85 Budget

Best L-Tyrosine 500 mg

Doctor's Best

Free-form L-tyrosine is clearly identified at a practical 500 mg amount in a focused capsule. Routine cost is lower than the original, though raw-material sourcing and purity assurance are not supplied.

86 Value

L-Tyrosine 500 mg

NOW

A focused 500 mg L-tyrosine capsule offers a practical amount without unrelated actives. The active design and routine serving economics create a useful value trade-off versus the original, though raw-material sourcing and purity assurance are unavailable.

85 Value

L-Tyrosine 500 mg

Jarrow Formulas

A focused 500 mg L-tyrosine capsule supplies a practical amount for acute cognitive demand. The active design and routine serving economics create a useful value trade-off versus the original, though quality-assurance and raw-material details are missing.

83 Value

L-Tyrosine 500 mg

Source Naturals

A practical 500 mg L-tyrosine amount is supplied in a simple tablet. The active design and routine serving economics create a useful value trade-off versus the original, though the added calcium offers little targeted benefit and raw-material assurance is absent.

Report alternatives

Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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