L-Arginine 500 mg
by Mason Natural · capsule · 60 capsules
- On the market (NIH)
- UPC 3 11845 12645 0
- DSLD label 244889
- Serving 1 capsule
- 60 servings
L-Arginine 500 mg by Mason Natural lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 60 mg of calcium and 500 mg of L-arginine hydrochloride. Its current label entered the NIH Dietary Supplement Label Database on April 22, 2021.
What is in L-Arginine 500 mg?
Each row as the label prints it, per serving of 1 capsule. 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 |
|---|---|---|---|
| Calciumas Calcium PhosphateCalcium (Form: as Calcium Phosphate) Note: elemental | 60 mg | 6% | 68% of 17,831 products listing calcium give more (median 115 mg). |
| L-Arginine Hydrochloride | 500 mg | 47% of 1,455 products listing arginine give more (median 500 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 244889 (entered April 22, 2021), 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 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 500 mgSource Naturals same ingredients
- L-Arginine 1000 mgNatural Factors 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
- Directions: Adults - Take one capsule, one to two times daily, preferably with food, as a dietary supplement.
- Warnings
- Caution: If you are pregnant, nursing, taking any medications or have any medical condition, consult your physician before use.
- Discontinue use and consult your physician if any adverse reactions occur.
- Keep out of reach of children.
- Tamper-Evident Seal: Do not use product if seal appears tampered.
- Allergens and what it does not contain
- Guaranteed no added: Sugar, starch, sodium, yeast, soy, corn, wheat, dairy, gluten, fish, tree nuts, peanuts, egg, fragrance, artificial colors or flavors, preservatives, crustacean shellfish.
- Gluten free Soy free
- Storage
- Store in a dry place under controlled room temperature: 20 degrees - 25 degrees C (68 degrees - 77 degrees F).
Source: label statements in DSLD label 244889.
What else is on the label?
Other ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Stearic Acid.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Mason guarantee Laboratory Tested cGMP Certified Good Manufacturing Practice.
How many labels does L-Arginine 500 mg have?
One label is on file, entered on April 22, 2021.
- Label 244889 (current) Entered April 22, 2021 · on the market · 60 capsules · UPC 3 11845 12645 0
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Mason Vitamins, Inc. (distributor), Miami Lakes, FL. All Mason Natural products.