L-Citrulline
by NOW · powder · 4 oz.
- On the market (NIH)
- UPC 7 33739 00214 3
- DSLD label 53400
- Serving 0.5 tsp (approx. 1.5 g)
- 75 servings
L-Citrulline by NOW lists one ingredient: 1.5 g of L-citrulline per serving of 0.5 tsp. Its current label entered the NIH Dietary Supplement Label Database on November 24, 2015.
What is in L-Citrulline?
Each row as the label prints it, per serving of 0.5 tsp. 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-CitrullineL-Citrulline Note: 1,500 mg | 1.5 g | 68% of 1,209 products listing citrulline give more (median 3 g). Per day at the most servings: 3 g. |
Source: NIH ODS Dietary Supplement Label Database, label 53400 (entered November 24, 2015), 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 1 to 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?
6 products list the very same ingredients; the nearest amounts come first.
- Sustained Release L-Citrulline 750 mgNOW Sports same ingredients
- L-Citrulline 1,500 mgNutricost same ingredients
- L-Citrulline Pure PowderBest Naturals same ingredients
- L-Citrulline 1500 mgBest Naturals same ingredients
- L-CitrullineNutraKey same ingredients
- High Strength L-Citrulline 1800 mgZazzee Sports 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
- Suggested Usage: Take 1/2 level teaspoon 1 to 2 times daily between meals.
- Warnings
- Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
- Caution: For adults only.
- Consult physician if pregnant/nursing, taking medication (especially blood pressure medications and nitrates or other vasodilating drugs), or have a medical condition (especially abnormal blood pressure).
- Keep out of reach of children.
- Do Not Eat Freshness Packet Enclosed.
- Allergens and what it does not contain
- Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
- Storage
- Store in a cool, dry place after opening.
Source: label statements in DSLD label 53400.
What else is on the label?
Other ingredients: None.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Non-GMO; GMP QUALITY ASSURED.
How many labels does L-Citrulline have?
5 labels are on file under this name since December 23, 2011: other sizes, label designs and reformulations. The current one leads this page.
- Label 53400 (current) Entered November 24, 2015 · on the market · 4 oz. · UPC 7 33739 00214 3
- Label 40216 Entered December 29, 2014 · off the market October 23, 2015 · 4 oz. · UPC 7 33739 00214 3
- Label 36296 Entered August 26, 2014 · off the market November 26, 2014 · 4 oz. · UPC 7 33739 00214 3
- Label 13581 Entered October 1, 2012 · off the market May 1, 2014 · 4 oz. · UPC 7 33739 00214 3
- Label 2823 Entered December 23, 2011 · off the market July 6, 2010 · 4 oz. · UPC 7 33739 00214 3
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names NOW Foods (manufacturer), Bloomingdale, IL. All NOW products.