PlainVitamins

Arginine

by ILN Iron Labs Nutrition · capsule · 120 vegetarian capsules

  • On the market (NIH)
  • UPC X0009J55JV
  • DSLD label 286929
  • Serving 4 capsules
  • 30 servings

Arginine by ILN Iron Labs Nutrition lists 4 ingredients, 4 with an amount per serving of 4 capsules, such as 2,600 mg of L-arginine HCl, 200 mg of L-glutamine, 4 mcg (160 IU) of vitamin D3 and 2 mcg of vitamin B12. Its current label entered the NIH Dietary Supplement Label Database on June 22, 2023.

What is in Arginine?

Each row as the label prints it, per serving of 4 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).

Arginine: Supplement Facts rows against the market (DSLD label 286929, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Arginine HCl2,600 mgArginine in Arginine against 1,455 products2,600 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.2,600 mg

Higher than 91% of 1,455 products listing arginine (median 500 mg).

L-Glutamine200 mgGlutamine in Arginine against 1,850 products0.2 g per serving; the middle half of products list 0.356 g to 3 g, the median 1 g.0.2 g

80% of 1,850 products listing glutamine give more (median 1 g).

Vitamin D34 mcg (160 IU)80%Vitamin D in Arginine against 14,175 products4 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg4 mcg

90% of 14,175 products listing vitamin D give more (median 15 mcg).

Vitamin B122 mcg80%Vitamin B12 in Arginine against 14,425 products2 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg2 mcg

93% of 14,425 products listing vitamin B12 give more (median 36 mcg).

Source: NIH ODS Dietary Supplement Label Database, label 286929 (entered June 22, 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?

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 2,600 mg of L-arginine HCl (filed by NIH under arginine) is higher than 91% of the 1,455 arginine products that print an amount; 130 list more.
  • 93% of the 14,425 products that print an amount of vitamin B12 list more than its 2 mcg of vitamin B12 (median 36 mcg).

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?

1 product lists 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 for use: Take 4 capsules once per day with a glass of water. Take dosage with a glass of water 30 minutes before training. Take dosage with lunch on off-days.
Warnings
Important information: Do not exceed recommended daily dosage. Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
Not recommended for use by pregnant or lactating women. If you are taking any medications, are under medical supervision, have an existing medical condition or symptoms of illness, consult your doctor before use.
Using this supplement at the same time as other food supplements may result in excessive ingredient dosages, consult a qualified professional if you are unsure. Discontinue use and contact a doctor immediately if any adverse reactions occur.
Not intended for use by persons under the age of 18.
Do not use if seal is broken or missing.
Keep out of the reach of children.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 286929.

What else is on the label?

Other ingredients: L-Arginine Hydrochloride, Hydroxypropyl Methylcellulose, L-Glutamine, Maltodextrin, Magnesium Stearate, Silicon Dioxide, Cyanocobalamin, Cholecalciferol.

How many labels does Arginine have?

One label is on file, entered on June 22, 2023.

  1. Label 286929 (current) Entered June 22, 2023 · on the market · 120 vegetarian capsules · UPC X0009J55JV

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

Who makes it?

The label names Euro Nutrition Ltd (distributor), Poole, UK. All ILN Iron Labs Nutrition products.

Where next?