Nutricost · L-tyrosine · Powder

Is Nutricost L-Tyrosine Powder underdosed?

1 serving = 1 scoop (1 g)Directions: 1 serving a dayLabel as of 24 Oct 2024 · NIH DSLD

Verdict

1 g a dayas the label directs

Not graded

Contains 1 g. Not graded: a 2023 meta-analysis found no effect on endurance; its evidence is for focus under stress, at about 150 mg per kg of bodyweight.

One serving gives 1 g.

What the label says

L-Tyrosine per serving
1 g in 1 scoop (1 g)
Servings a day
1 serving a day
L-Tyrosine a day, as directed
1 g
Research dose
Not graded Evidence: Not graded
Suggested use: As a dietary supplement, mix 1 scoop with 6-10 oz of water or as directed by your healthcare professional.
The label's directions, as printed.

More about l-tyrosine: forms, timing and the studies behind the dose.

Same category, compared

All 11 L-tyrosine supplements we checked, ranked by dose (commission never changes the order).

ProductPer servingForm
Doctor's Best L-Tyrosine 500 mg500 mgCapsules
Jarrow Formulas L-Tyrosine 500 mg500 mgCapsules
Momentous Tyrosine500 mgCapsules
NOW L-Tyrosine 500 mg500 mgCapsules
NutraBio L-Tyrosine500 mgPowders
Nutricost L-Tyrosine 500 mg500 mgCapsules
Nutricost L-Tyrosine Powder (this product)1 gPowders
Pure Encapsulations L-Tyrosine500 mgCapsules
Source Naturals L-Tyrosine 500 mg500 mgTablets
Swanson L-Tyrosine 500 mg500 mgCapsules
Thorne L-Tyrosine500 mgCapsules

Where the reference doses come from

  1. L-Tyrosine, : .
  2. Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 306327, including its servings a day.

For a supplement taken every day we judge the most the label's directions give in a day, and show the least. Read the full methodology or the corrections log.