PlainVitamins

100% Pure L-Ornithine

by NutraBio · powder · 1.1 lbs

  • On the market (NIH)
  • UPC 6 49908 23501 7
  • DSLD label 66451
  • Serving 1.5 g (1 scoop)
  • 333 servings

100% Pure L-Ornithine by NutraBio lists one ingredient: 1,500 mg of L-ornithine hydrochloride per serving of 1.5 g. Its current label entered the NIH Dietary Supplement Label Database on November 21, 2016.

What is in 100% Pure L-Ornithine?

Each row as the label prints it, per serving of 1.5 g. 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).

100% Pure L-Ornithine: Supplement Facts rows against the market (DSLD label 66451, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Ornithine Hydrochloride1,500 mgOrnithine in 100% Pure L-Ornithine against 258 products1,500 mg per serving; the middle half of products list 100 mg to 900 mg, the median 400 mg.1,500 mg

Higher than 92% of 258 products listing ornithine (median 400 mg). Per day at the most servings: 3,000 mg.

Source: NIH ODS Dietary Supplement Label Database, label 66451 (entered November 21, 2016), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 1,500 mg of L-ornithine hydrochloride (filed by NIH under ornithine) is higher than 92% of the 258 ornithine products that print an amount; 13 list more.

The NIH database records 2 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.

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
1 serving~ mixed with 8-16 oz. favorite beverage~ 2x daily~ best if taken empty stomach Suggested Use: As a dietary supplement, add 1 scoop (1.5 grams) to your favorite beverage 2 times daily on an empty stomach, or as directed by a physician. On training days: Take 1 dose before exercise and 1 at bedtime.
Warnings
Warning: Not intended for use by persons under the age of 18. Keep out of the reach of children.
If you are pregnant, breast feeding, have known medical conditions (including kidney or liver disease) or are taking prescription or OTC medication(s) consults with your health care practitioner before using this product.
Allergens and what it does not contain
Allergen Free Non-GMO Gluten Free BSE/TSE Free
No Fillers No Excipients No Additives
Free of Harmful Impurities.
Zero Fillers or Excipients Inferior Ingredients Banned Substances Added Sugars Proprietary Blends Hidden Ingredients
Storage
Store in a cool dry place.

Source: label statements in DSLD label 66451.

What else is on the label?

Other ingredients: Absolutely None.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Made in GMP & FDA inspected facility; OU.

How many labels does 100% Pure L-Ornithine have?

4 labels are on file under this name since September 25, 2015: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 66451 (current) Entered November 21, 2016 · on the market · 1.1 lbs · UPC 6 49908 23501 7
  2. Label 66450 Entered November 21, 2016 · on the market · 5.3 oz. · UPC 6 49908 23500 0
  3. Label 51053 Entered October 22, 2015 · off the market September 19, 2016 · 150 grams · UPC 6 49908 23500 0
  4. Label 51055 Entered September 25, 2015 · off the market September 19, 2016 · 500 grams · UPC 6 49908 23501 7

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

Who makes it?

The label names NutraBio Labs, Inc. (manufacturer), Middlesex, NJ . All NutraBio products.

Where next?