PlainVitamins

L-Arginine

by Havasu Nutrition · capsule · 120 capsules

  • On the market (NIH)
  • UPC 8 50008 46449 2
  • DSLD label 320076
  • Serving 2 capsules
  • 60 servings

L-Arginine by Havasu Nutrition lists 4 ingredients, 4 with an amount per serving of 2 capsules, such as 400 mg of L-arginine hydrochloride, 400 mg of L-arginine alpha ketoglutarate, 400 mg of L-citrulline DL malate and 100 mg of beet, powder. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2024.

What is in L-Arginine?

Each row as the label prints it, per serving of 2 capsules. 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: Supplement Facts rows against the market (DSLD label 320076, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Arginine Hydrochloride400 mgArginine in L-Arginine against 1,455 products400 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.400 mg

60% of 1,455 products listing arginine give more (median 500 mg).

L-Arginine Alpha Ketoglutarate400 mgArginine Alpha Ketoglutarate in L-Arginine against 322 products0.4 g per serving; the middle half of products list 0.75 g to 1.99 g, the median 1 g.0.4 g

85% of 322 products listing arginine alpha ketoglutarate give more (median 1 g).

L-Citrulline DL Malate400 mgCitrulline malate in L-Arginine against 655 products0.4 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.0.4 g

95% of 655 products listing citrulline malate give more (median 3 g).

Beet, Powder100 mgBeet in L-Arginine against 850 products100 mg per serving; the middle half of products list 10.63 mg to 500 mg, the median 100 mg.100 mg

48% of 850 products listing beet give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 320076 (entered November 22, 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:

  • 85% of the 322 products that print an amount of arginine alpha ketoglutarate list more than its 0.4 g of L-arginine alpha ketoglutarate (filed by NIH under arginine alpha ketoglutarate) (median 1 g).
  • 95% of the 655 products that print an amount of citrulline malate list more than its 0.4 g of L-citrulline DL malate (filed by NIH under citrulline malate) (median 3 g).

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?

4 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
Directions: Take two capsules once a day, preferably with a meal.
Warnings
Caution: Use only as directed. Do not use if safety seal is damaged or missing.
Consults you healthcare provider before use if you are contemplating pregnancy, pregnant, nursing, have any medical condition, or use any medications.
For adult use only. Keep out of reach of children.
Allergens and what it does not contain
Non GMO ingredients
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 320076.

What else is on the label?

Other ingredients: Hypromellose, Silicon Dioxide, Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): 100% Vegan.

How many labels does L-Arginine have?

One label is on file, entered on November 22, 2024.

  1. Label 320076 (current) Entered November 22, 2024 · on the market · 120 capsules · UPC 8 50008 46449 2

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

Who makes it?

The label names Havasu Nutrition (distributor), St. Petersburg, FL. All Havasu Nutrition products.

Where next?