L-Carnosine 500 mg

by Source Naturals · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 0 21078 01558 1
  • DSLD label 273244
  • Serving 1 tablet
  • 60 servings

L-Carnosine 500 mg by Source Naturals lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 88 mg of calcium and 500 mg of L-carnosine. Its current label entered the NIH Dietary Supplement Label Database on January 23, 2023.

What is in L-Carnosine 500 mg?

Each row as the label prints it, per serving of 1 tablet. 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).

L-Carnosine 500 mg: Supplement Facts rows against the market (DSLD label 273244, January 2026 release)
IngredientAmount% DVAmong products listing it
Calcium88 mg9%Calcium in L-Carnosine 500 mg against 17,831 products88 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg88 mg

61% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 264 mg.

L-Carnosine500 mgCarnosine in L-Carnosine 500 mg against 154 products500 mg per serving; the middle half of products list 50 mg to 500 mg, the median 100 mg.500 mg

Higher than 68% of 154 products listing carnosine (median 100 mg). Per day at the most servings: 1,500 mg.

Source: NIH ODS Dietary Supplement Label Database, label 273244 (entered January 23, 2023), 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?

The products whose ingredient lists overlap most with L-Carnosine 500 mg's, rare ingredients counting for more.

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 Use: 1 tablet 1 to 3 times daily with meals.
Warnings
Caution: If you are pregnant, may become pregnant, or breastfeeding, consult your physician before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Source: label statements in DSLD label 273244.

What else is on the label?

Other ingredients: Dibasic Calcium Phosphate, Microcrystalline Cellulose, Stearic Acid, Hydroxypropyl Cellulose, Silica, modified Cellulose Gum.

How many labels does L-Carnosine 500 mg have?

3 labels are on file under this name since June 23, 2017: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 273244 (current) Entered January 23, 2023 · on the market · 60 tablets · UPC 0 21078 01558 1
  2. Label 80935 Entered November 20, 2017 · off the market December 22, 2021 · 60 tablets · UPC 0 21078 01558 1
  3. Label 75335 Entered June 23, 2017 · on the market · 30 tablets · UPC 0 21078 01557 4

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?