PlainVitamins

L-Arginine Powder

by NOW Sports · powder · 1 kilogram

  • On the market (NIH)
  • UPC 7 33739 00211 2
  • DSLD label 314471
  • Serving 6 g (2 level teaspoons)
  • 167 servings

L-Arginine Powder by NOW Sports lists one ingredient: 6 g of L-arginine per serving of 6 g. Its current label entered the NIH Dietary Supplement Label Database on June 20, 2024.

What is in L-Arginine Powder?

Each row as the label prints it, per serving of 6 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).

L-Arginine Powder: Supplement Facts rows against the market (DSLD label 314471, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories30 Calories
L-Argininefree-form, 6,000 mg6 gArginine in L-Arginine Powder against 1,455 products6,000 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.6,000 mg

Higher than over 99% of 1,455 products listing arginine (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 314471 (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?

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 6,000 mg of L-arginine (filed by NIH under arginine) is higher than over 99% of the 1,455 arginine products that print an amount; 7 list more.

The NIH database records one serving 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
Suggested usage: Mix 2 level teaspoons daily as needed in at least 8 oz. of juice or water, preferably on an empty stomach.
Warnings
Caution: Take this product with at least 8 oz. of water or juice. This product should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease.
For adults only. Keep out of reach of children.
Not for pregnant or nursing women. Consult physician if taking medication (especially antihypertensives, anticoagulants, and antidiabetic drugs), or have a medical condition (especially asthma or renal disease) or are planning to have surgery.
Not manufactured with wheat, gluten, soy, 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
Steroid tested Non-GMO
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.
Storage
This product is sold by weight not volume.
Store in a cool, dry, dark place after opening.

Source: label statements in DSLD label 314471.

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): Crescent H (Halal) GMP Quality Assured; Informed Sport We Test You Trust Triangle K (Kosher). Listed with: Informed Sport or Informed Choice (a seal is the label's claim; the certifier's own list confirms it).

How many labels does L-Arginine Powder have?

9 labels are on file under this name since October 1, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 314471 (current) Entered June 20, 2024 · on the market · 1 kilogram · UPC 7 33739 00211 2
  2. Label 314470 Entered June 20, 2024 · on the market · 1 pound · UPC 7 33739 00210 5
  3. Label 204761 Entered July 24, 2019 · off the market February 12, 2024 · 1 kg · UPC 7 33739 00211 2
  4. Label 204756 Entered July 24, 2019 · off the market February 12, 2024 · 1 lb · UPC 7 33739 00210 5
  5. Label 69480 Entered January 25, 2017 · off the market December 6, 2018 · 1 kg · UPC 7 33739 00211 2
  6. Label 69479 Entered January 25, 2017 · off the market December 6, 2018 · 1 lb · UPC 7 33739 00210 5
  7. Label 58725 Entered April 22, 2016 · off the market July 18, 2016 · 1 lb · UPC 7 33739 00210 5
  8. Label 33438 Entered May 23, 2014 · off the market January 19, 2016 · 1 lb · UPC 7 33739 00210 5
  9. Label 13513 Entered October 1, 2012 · off the market July 18, 2016 · 1 kg · UPC 7 33739 00211 2

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 Sports products.

Where next?