L-Tyrosine
by NOW · powder · 4 ounces
- On the market (NIH)
- UPC 7 33739 00265 5
- DSLD label 314456
- Serving 350 mg (1/4 Level Teaspoon)
- 323 servings
L-Tyrosine by NOW lists one ingredient: 350 mg of L-tyrosine per serving of 350 mg. Its current label entered the NIH Dietary Supplement Label Database on June 20, 2024.
What is in L-Tyrosine?
Each row as the label prints it, per serving of 350 mg. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| L-Tyrosinefree-form | 350 mg | 58% of 1,680 products listing tyrosine give more (median 500 mg). Per day at the most servings: 1,050 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 314456 (entered June 20, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records 1 to 3 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
6 products list the very same ingredients; the nearest amounts come first.
- Amino L-TyrosineGenestra Brands same ingredients
- L-Tyrosine 500 mgVitaCeutical Labs same ingredients
- L Tyrosine 500 mgBronson Laboratories · off the market same ingredients
- L-Tyrosine 500 mgGood 'N Natural · off the market same ingredients
- L-Tyrosine 500 mgPhysician's Preference · off the market same ingredients
- L-Tyrosine Amino Acid 500 mgNew Sun same ingredients
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested Usage: Mix 1/4 level teaspoon in juice or water, preferably between meals, 1 to 3 times daily.
- Warnings
- Caution: For adults only.
- Consult physician if pregnant/nursing, taking medication, or have a medical condition. Persons with thyroid disease (hyperthyroidism), melanoma, or those taking MAO inhibitors or other mood altering medications should seek the advice of a physician before consuming this product.
- Keep out of reach of children.
- Not manufactured with wheat, gluten, soy, corn, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
- Allergens and what it does not contain
- Non-GMO
- Not manufactured with wheat, gluten, soy, corn, milk, egg, fish, shellfish, tree nut or sesame ingredients.
- Storage
- This product is sold by weight not volume. Store in a cool, dry place after opening.
Source: label statements in DSLD label 314456.
What else is on the label?
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Triangle K (Kosher); GMP Quality Assured Crescent H (Halal).
How many labels does L-Tyrosine have?
6 labels are on file under this name since October 1, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 314456 (current) Entered June 20, 2024 · on the market · 4 ounces · UPC 7 33739 00265 5
- Label 244425 Entered February 25, 2021 · on the market · 4 oz. · UPC 7 33739 00265 5
- Label 53459 Entered November 24, 2015 · off the market August 8, 2023 · 4 oz. · UPC 7 33739 00265 5
- Label 40220 Entered December 29, 2014 · off the market October 23, 2015 · 4 oz. · UPC 7 33739 00265 5
- Label 36613 Entered August 26, 2014 · off the market November 26, 2014 · 4 oz. · UPC 7 33739 00265 5
- Label 13620 Entered October 1, 2012 · off the market June 3, 2014 · 4 oz. · UPC 7 33739 00265 5
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names NOW Foods (packager), Bloomingdale, IL. All NOW products.