PlainVitamins

Nitric Oxide

by Premium Certified · capsule · 90 capsules

  • On the market (NIH)
  • DSLD label 335677
  • Serving 3 capsules
  • 30 servings

Nitric Oxide by Premium Certified lists 9 ingredients, 9 with an amount per serving of 3 capsules, such as 480 mg of L-citrulline, 30 mg of pine bark extract, 30 mg of quercetin and 30 mg of longjack extract. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2025.

What is in Nitric Oxide?

Each row as the label prints it, per serving of 3 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: Supplement Facts rows against the market (DSLD label 335677, January 2026 release)
IngredientAmount% DVAmong products listing it
Nitri-Syl Proprietary L-Arginine Blend1,680 mg
Arginine Alpha Keto-Glutarate1,350 mgArginine Alpha Ketoglutarate in Nitric Oxide against 322 products1.35 g per serving; the middle half of products list 0.75 g to 1.99 g, the median 1 g.1.35 g

Higher than 63% of 322 products listing arginine alpha ketoglutarate (median 1 g). Per day at the most servings: 2.7 g.

Mono255 mgArginine in Nitric Oxide against 1,455 products255 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.255 mg

66% of 1,455 products listing arginine give more (median 500 mg). Per day at the most servings: 510 mg.

Malate60 mgMalic Acid in Nitric Oxide against 235 products60 mg per serving; the middle half of products list 222 mg to 1,200 mg, the median 588 mg.60 mg

92% of 235 products listing malic acid give more (median 588 mg). Per day at the most servings: 120 mg.

Arginine Ketoisocaproate15 mg
L-Citrulline480 mgCitrulline in Nitric Oxide against 1,209 products0.48 g per serving; the middle half of products list 1 g to 5 g, the median 3 g.0.48 g

88% of 1,209 products listing citrulline give more (median 3 g). Per day at the most servings: 0.96 g.

Pine Bark Extract30 mgPine in Nitric Oxide against 220 products30 mg per serving; the middle half of products list 25 mg to 180 mg, the median 83 mg.30 mg

62% of 220 products listing pine give more (median 83 mg). Per day at the most servings: 60 mg.

Quercetinas S. japonica30 mgQuercetin in Nitric Oxide against 1,548 products30 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.30 mg

70% of 1,548 products listing quercetin give more (median 100 mg). Per day at the most servings: 60 mg.

Longjack Extract30 mgEurycoma Longifolia in Nitric Oxide against 496 products30 mg per serving; the middle half of products list 75 mg to 212.47 mg, the median 100 mg.30 mg

90% of 496 products listing eurycoma longifolia give more (median 100 mg). Per day at the most servings: 60 mg.

BioPerineas P. nigrumstandardized to 95% piperine, standardized to 50:15 mgBlack Pepper in Nitric Oxide 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). Per day at the most servings: 10 mg.

Source: NIH ODS Dietary Supplement Label Database, label 335677 (entered September 25, 2025), 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:

  • 92% of the 235 products that print an amount of malic acid list more than its 60 mg of malate (filed by NIH under malic acid) (median 588 mg).
  • 90% of the 496 products that print an amount of eurycoma longifolia list more than its 30 mg of longjack extract (filed by NIH under eurycoma longifolia) (median 100 mg).

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?

The products whose ingredient lists overlap most with Nitric Oxide'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
Suggested use: For best results, on workout days, take three capsules in the morning (before breakfast) and three capsules 30 minutes before workouts; and on non-workout days, take three capsules in the morning (before breakfast), and three capsules at night (before dinner).
Warnings
Warning: Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition, should consult with a physician before taking this or any other dietary supplement.
Warning: Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition, should consult with a physician before taking this or any other dietary supplement. Keep out of the reach of children.
Do not use this product if outer seal around cap is missing or broken.
Allergens and what it does not contain
Free of soy, gluten, milk, egg, wheat, peanuts, artificial sweeteners and shellfish.
No GMOs - No hormones No soy - No preservatives No gluten - No coloring
Storage
Store at room temperature.

Source: label statements in DSLD label 335677.

What else is on the label?

Other ingredients: Cellulose, Rice Flour.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Made in USA Vegan Friendly Non GMO Verified.

How many labels does Nitric Oxide have?

2 labels are on file under this name since June 23, 2021: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 335677 (current) Entered September 25, 2025 · on the market · 90 capsules
  2. Label 248708 Entered June 23, 2021 · off the market March 4, 2025 · 90 capsules

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

Who makes it?

The label names Premium Certified (distributor), Northbrook, IL. All Premium Certified products.

Where next?