Nitri Oxide Support
by Pure Encapsulations · powder · 5.7 ounces
- On the market (NIH)
- UPC 7 66298 01261 2
- DSLD label 277959
- Serving 5.4 g (1 scoop)
- 30 servings
Nitri Oxide Support by Pure Encapsulations lists 3 ingredients, 3 with an amount per serving of 5.4 g, such as 200 mg of vitamin C, 2,050 mg of L-arginine and 715 mg of citrulline. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2022.
What is in Nitri Oxide Support?
Each row as the label prints it, per serving of 5.4 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin Cas Ascorbic Acid | 200 mg | 222% | Higher than 63% of 18,583 products listing vitamin C (median 100 mg). |
| L-Arginineas Arginine Alpha-Ketoglutarate2:1 | 2,050 mg | Higher than 89% of 1,455 products listing arginine (median 500 mg). | |
| Citrullineas Citrulline MalateCitrulline (Form: from Citrulline Malate) | 715 mg | 85% of 1,209 products listing citrulline give more (median 3 g). |
Source: NIH ODS Dietary Supplement Label Database, label 277959 (entered November 22, 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?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
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 Nitri Oxide Support's, rare ingredients counting for more.
- L-Arginine & L-CitrullineGNC Mega Men 2 shared, 82% alike
- Arginine & Citruline 500/250NOW Sports · off the market 2 shared, 82% alike
- Pharmaceutical Grade AjiPure L-ArginineSwanson Ultra · off the market 2 shared, 82% alike
- Arginine & Citrulline 500/250NOW Sports · off the market 2 shared, 82% alike
- L-Arginine & L-CitrullineGNC 2 shared, 82% alike
- L-Arginine L-Citrulline 1000 mgNova Nutritions 2 shared, 82% alike
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
- Recommendations: As a dietary supplement, take 1 scoop daily, mixed with water, 20 minutes before exercise.
- Warnings
- Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.
- Keep out of the reach of children.
- Use only if safety seal is intact.
- Allergens and what it does not contain
- Gluten-free, Non-GMO & Hypoallergenic
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 277959.
What else is on the label?
Other ingredients: Xylitol, Stevia leaf extract, Luo Han Guo (Momordica grosvenorii) extract, natural Lemon flavor, natural Lime flavor.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GFCO.org Certified Gluten-Free by the Gluten-Free Certification Organization, www.gluten.org. Listed with: Certified gluten-free (GFCO) (a seal is the label's claim; the certifier's own list confirms it).
How many labels does Nitri Oxide Support have?
3 labels are on file under this name since February 25, 2019: other sizes, label designs and reformulations. The current one leads this page.
- Label 277959 (current) Entered November 22, 2022 · on the market · 5.7 ounces · UPC 7 66298 01261 2
- Label 219534 Entered May 22, 2020 · off the market December 4, 2018 · 162 grams · UPC 7 66298 01261 2
- Label 184808 Entered February 25, 2019 · off the market March 22, 2022 · 5.7 oz. · UPC 7 66298 01261 2
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Pure Encapsulations (manufacturer), Sudbury, MA. All Pure Encapsulations products.