L-Arginine & L-Citrulline
by GNC · other (e.g. tea bag) · 120 caplets
- On the market (NIH)
- UPC 0 48107 21115 8
- DSLD label 224677
- Serving 1 to 3 caplets; amounts per 1 caplet
L-Arginine & L-Citrulline by GNC lists 2 ingredients, 2 with an amount per serving of 1 caplet, such as 500 mg of L-arginine and 500 mg of L-citrulline. Its current label entered the NIH Dietary Supplement Label Database on June 24, 2020.
What is in L-Arginine & L-Citrulline?
Each row as the label prints it, per serving of 1 caplet. 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 |
|---|---|---|---|
| L-Arginineas L-Arginine HydrochlorideL-Arginine (Form: as L-Arginine Hydrochloride) | 500 mg | 47% of 1,455 products listing arginine give more (median 500 mg). | |
| L-Citrulline | 500 mg | 86% of 1,209 products listing citrulline give more (median 3 g). |
Source: NIH ODS Dietary Supplement Label Database, label 224677 (entered June 24, 2020), version 9.4.0. See the label on DSLD. 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?
6 products list the very same ingredients; the nearest amounts come first.
- L-Arginine & L-CitrullineGNC Mega Men same ingredients
- Arginine & Citruline 500/250NOW Sports · off the market same ingredients
- Arginine & Citrulline 500/250NOW Sports · off the market same ingredients
- Arginine 500 mg & Citrulline 250 mgProtocol For Life Balance same ingredients
- Arginine 500 mg & Citrulline 250 mgLuckyVitamin same ingredients
- L-Arginine + L-Citrulline 750 mgNutricost same ingredients
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 one to three caplets daily.
- Warnings
- Keep out of reach of children.
- Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication or have a medical condition.
- Discontinue use two weeks prior to surgery.
- Allergens and what it does not contain
- No sugar, no artificial colors, no artificial flavors, no preservatives, sodium free, no wheat, gluten free, no corn, no soy, no dairy. GF Gluten free
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 224677.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Hydroxypropylcellulose, Stearic Acid, modified Cellulose Gum, Calcium Silicate, Ethylcellulose, Magnesium Stearate, Silicon Dioxide, Carnauba wax, Triacetin, Diacetylated Monoglycerides, Oleic Acid, Polyethylene Glycol.
How many labels does L-Arginine & L-Citrulline have?
3 labels are on file under this name since September 25, 2013: other sizes, label designs and reformulations. The current one leads this page.
- Label 224677 (current) Entered June 24, 2020 · on the market · 120 caplets · UPC 0 48107 21115 8
- Label 74930 Entered July 25, 2017 · off the market December 13, 2022 · 120 caplets · UPC 0 48107 12339 0
- Label 25659 Entered September 25, 2013 · off the market May 11, 2017 · 120 caplets · UPC 0 48107 12339 0
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names General Nutrition Corporation (distributor), Pittsburgh, PA. All GNC products.