L-Arginine 500 mg
by Source Naturals · capsule · 50 capsules
- On the market (NIH)
- UPC 0 21078 01686 1
- DSLD label 295933
- Serving 2 capsules
- 25 servings
L-Arginine 500 mg by Source Naturals lists 2 ingredients, 2 with an amount per serving of 2 capsules, such as 47 mg of calcium and 1 g of L-arginine. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.
What is in L-Arginine 500 mg?
Each row as the label prints it, per serving of 2 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Calories | 5 Calories | ||
| Calcium | 47 mg | 5% | 77% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 141 mg. |
| L-Argininefree form | 1 g | Higher than 64% of 1,455 products listing arginine (median 500 mg). Per day at the most servings: 3,000 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 295933 (entered August 23, 2023), 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 1 to 3 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?
3 products list the very same ingredients; the nearest amounts come first.
- L-Arginine 1000 mgNatural Factors same ingredients
- L-Arginine 500 mgMason Natural same ingredients
- ManatoneIndiana Botanic Gardens same ingredients
- L-Arginine 500GNC · off the market 1 shared, 68% alike
- L-Arginine 1000GNC · off the market 1 shared, 68% alike
- Arginine Ethyl EsterSNI Elite Series · off the market 1 shared, 68% 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
- Suggested use: 2 capsules, 1 to 3 times daily between meals.
- Warnings
- Note: Consult your health care professional prior to using this product if you are being treated for any pre-existing conditions or are taking prescription medications, such as heart medications including nitroglycerin or any erectile dysfunction medications. If you are pregnant, may become pregnant, or are breastfeeding, consult your health care professional before using this product.
- Do not use if either tamper-evident seal is broken or missing.
- Keep out of the reach of children.
- Allergens and what it does not contain
- Hypoallergenic: contains no yeast, dairy, egg, gluten, corn soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 295933.
What else is on the label?
Other ingredients: Gelatin, Dibasic Calcium Phosphate, Silicon Dioxide, Colloidal, Magnesium Stearate.
How many labels does L-Arginine 500 mg have?
2 labels are on file under this name since November 22, 2022: other sizes, label designs and reformulations. The current one leads this page.
- Label 295933 (current) Entered August 23, 2023 · on the market · 50 capsules · UPC 0 21078 01686 1
- Label 274749 Entered November 22, 2022 · on the market · 100 capsules · UPC 0 21078 01687 8
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.