Nitric Oxide Booster

by Iron Brothers Supplements · capsule · 120 capsules

  • On the market (NIH)
  • UPC X002K0WQHJ
  • DSLD label 263523
  • Serving 4 capsules
  • 30 servings

Nitric Oxide Booster by Iron Brothers Supplements lists 8 ingredients, 8 with an amount per serving of 4 capsules, such as 30 mg NE of niacin, 1.1 g of L-arginine HCl, 1.1 g of L-arginine alpha keto glutarate and 500 mg of L-citrulline DL-malate. Its current label entered the NIH Dietary Supplement Label Database on May 19, 2022.

What is in Nitric Oxide Booster?

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).

Nitric Oxide Booster: Supplement Facts rows against the market (DSLD label 263523, January 2026 release)
IngredientAmount% DVAmong products listing it
Niacinas Nicotinic Acid30 mg NE188%Niacin in Nitric Oxide Booster against 12,413 products30 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg30 mg

Higher than 63% of 12,413 products listing niacin (median 20 mg).

L-Arginine HCl1.1 gArginine in Nitric Oxide Booster against 1,455 products1,100 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.1,100 mg

Higher than 76% of 1,455 products listing arginine (median 500 mg).

L-Arginine Alpha Keto Glutarate1.1 gArginine Alpha Ketoglutarate in Nitric Oxide Booster against 322 products1.1 g per serving; the middle half of products list 0.75 g to 1.99 g, the median 1 g.1.1 g

Higher than 54% of 322 products listing arginine alpha ketoglutarate (median 1 g).

L-Citrulline DL-Malate500 mgCitrulline malate in Nitric Oxide Booster against 655 products0.5 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.0.5 g

90% of 655 products listing citrulline malate give more (median 3 g).

Agmatine Sulfate100 mgAgmatine in Nitric Oxide Booster against 514 products100 mg per serving; the middle half of products list 500 mg to 1,000 mg, the median 750 mg.100 mg

over 99% of 514 products listing agmatine give more (median 750 mg).

Masson Pine bark extract100 mg
Proanthocyanidins95 mgProanthocyanidins in Nitric Oxide Booster against 164 products95 mg per serving; the middle half of products list 12.5 mg to 95 mg, the median 36 mg.95 mg

Higher than 74% of 164 products listing proanthocyanidins (median 36 mg).

Bioperineas Black Pepper Fruit Extract5 mgBlack Pepper in Nitric Oxide Booster against 2,363 products5 mg per serving; the middle half of products list 5 mg to 10 mg, the median 5 mg.5 mg

33% of 2,363 products listing black pepper give more (median 5 mg).

Source: NIH ODS Dietary Supplement Label Database, label 263523 (entered May 19, 2022), 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:

  • 90% of the 655 products that print an amount of citrulline malate list more than its 0.5 g of L-citrulline DL-malate (filed by NIH under citrulline malate) (median 3 g).
  • over 99% of the 514 products that print an amount of agmatine list more than its 100 mg of agmatine (median 750 mg).

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?

The products whose ingredient lists overlap most with Nitric Oxide Booster'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
Directions As a dietary supplement take 4 capsules 30 minutes prior to working out. On non-workout days, take four (4) capsules in the morning or night.
Warnings
Warning: Do not exceed recommended daily dosage.
This product should only be taken by healthy individuals at least 18 years of age or older. Keep out of reach of children.
Do not consume if pregnant or nursing.
You should not take this product with alcohol. Discontinue use and consult a medical doctor if you experience unusual symptoms. Do not use if safety seal is damaged or missing.
Manufactured in a facility with fish, wheat, gluten, milk, egg, shellfish, tree nuts, soy, peanut.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 263523.

What else is on the label?

Other ingredients: Hypromellose, Rice Flour, Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Compliant Good Manufacturing Practice; Made in the USA.

How many labels does Nitric Oxide Booster have?

One label is on file, entered on May 19, 2022.

  1. Label 263523 (current) Entered May 19, 2022 · on the market · 120 capsules · UPC X002K0WQHJ

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

Who makes it?

The label names Iron Brothers LLC (distributor), Las Vegas, NV. All Iron Brothers Supplements products.

Where next?