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L-Tyrosine

NOW
4.7
★ ★ ★ ★ ★
(1391 ratings)
Tyrosine 350 mg
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Score84
The core formula provides a clearly defined role with practical strengths. The stated serving offers only threshold-level support and a liquid measure is less exact than a capsule.
How scoring works
Quantity:4 Liquid(s) • (323 servings)
Goals:

Score 84

The core formula provides a clearly defined role with practical strengths. The stated serving offers only threshold-level support and a liquid measure is less exact than a capsule.
How scoring works
$17.40($0.05 per serving)
iHerb
$ 18.36
Vitacost
$ 17.97
Daily Vita
$ 17.40
Pure Formulas
$ 17.85
Daily Vita
$ 4.00
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Analysis

Liquid L-tyrosine provides flexible dosing and an economical 350 mg serving. The bulk format may suit users who dislike capsules or want to adjust intake gradually.

The stated serving offers only threshold-level support and a liquid measure is less exact than a capsule. Purity, sourcing, and detailed usage guidance are not provided.

It fits experienced users who value flexibility and low cost over premeasured convenience. A higher-dose capsule or powder is easier to use for a consistent acute-stress serving.

Who is it for
  • experienced users who value flexibility and low cost over premeasured convenience
  • Adults who understand the formula’s focused role
  • Users comfortable with the stated limitations
Best for
  • Flexible liquid dosing
  • Low-cost long-term supply
  • Users avoiding capsules

Pros

  • Preferred L-tyrosine form
  • Very low active cost
  • Adjustable liquid format

Cons

  • Low amount per stated serving
  • Measuring precision is limited
  • No sourcing or purity details

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

Nutrient quality

85 Highest impact

Free-form L-tyrosine uses an appropriate active form in a focused formula. The serving amount is modest for targeted cognitive use but avoids excess.

Ingredient transparency

84 Highest impact

The active ingredient and amount are disclosed without a hidden blend. The liquid-format listing and absent full usage directions make serving details less clear.

Customer satisfaction

69 High impact

The aggregate rating is strong, and the review volume provides solid confidence in it. No detailed feedback is supplied to assess recurring complaints or purpose-specific experiences.

Value for money

96 Highest impact

The bulk supply delivers excellent active-amount value despite the modest serving. It compares very well with other focused tyrosine options.

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Ingredients

IngredientAmount per serving
L-Tyrosine
350 mg
Gluten Free Adults 18–50 Kosher Dairy Free
Report overview
Tyrosine · 350 mg OverallScore77
B- Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyA+ Value

The isolated L-Tyrosine form is appropriate, but the serving amount provides only threshold-level support. Full dose disclosure makes the potency easy to judge, while sourcing and purity credentials remain absent. The bulk format delivers strong value per gram.

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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 lower-dose liquid, 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 lower-dose liquid, 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 lower-dose liquid, 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. Only no eligible candidates are strictly cheaper, so this is one of the closest low-cost allowed matches to the original lower-dose liquid.
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 no eligible candidates are strictly cheaper, so this is one of the closest low-cost allowed matches to the original lower-dose liquid.
88 Budget

L-Tyrosine 500 mg

Swanson
Its capsule supplies 500 mg L-tyrosine in a focused single-active formula. Only no eligible candidates are strictly cheaper, so this is one of the closest low-cost allowed matches to the original lower-dose liquid.
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 lower-dose liquid.
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 lower-dose liquid.
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 lower-dose liquid.
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