Arginine Plus

by Metagenics · tablet or pill · 120 tablets

  • On the market (NIH)
  • UPC 7 55571 91055 4
  • DSLD label 295630
  • Serving 2 tablets
  • 60 servings

Arginine Plus by Metagenics lists 3 ingredients, 3 with an amount per serving of 2 tablets, such as 665 mcg DFE of folate, 1.5 g of L-arginine and 10 mg of glycine, beside 2 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in Arginine Plus?

Each row as the label prints it, per serving of 2 tablets. 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).

Arginine Plus: Supplement Facts rows against the market (DSLD label 295630, January 2026 release)
IngredientAmount% DVAmong products listing it
Total Carbohydratesless than 1 g1%
Dietary Fiberless than 1 g3%
Folateas Calcium L-5-Methyltetrahydrofolate665 mcg DFE166%
L-Arginine1.5 gArginine in Arginine Plus against 1,455 products1,500 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.1,500 mg

Higher than 81% of 1,455 products listing arginine (median 500 mg). Per day at the most servings: 3,000 mg.

Glycine10 mgGlycine in Arginine Plus against 1,078 products10 mg per serving; the middle half of products list 100 mg to 846 mg, the median 300 mg.10 mg

98% of 1,078 products listing glycine give more (median 300 mg). Per day at the most servings: 20 mg.

Source: NIH ODS Dietary Supplement Label Database, label 295630 (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?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 98% of the 1,078 products that print an amount of glycine list more than its 10 mg of glycine (median 300 mg).

The NIH database records 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?

The products whose ingredient lists overlap most with Arginine Plus's, rare ingredients counting for more.

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: Take two tablets two times daily or as directed by your healthcare practitioner.
Warnings
Caution: If pregnant or nursing, or taking medications, consult your healthcare practitioner before use.
If you have had a myocardial infarction (heart attack) or have a history of renal (kidney) impairment, consult your cardiologist or physician before use.
Keep out of the reach of children.
Practitioner exclusive
Allergens and what it does not contain
This product is non GMO, gluten free, and vegetarian.
Storage
Storage: Keep tightly closed in a cool, dry place. Do not refrigerate.

Source: label statements in DSLD label 295630.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Cellulose, Stearic Acid, Silica, Calcium Silicate, Croscarmellose Sodium, Hypromellose, Medium Chain Triglyceride, Hydroxypropyl Cellulose.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Certified Gluten Free GFCO.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 Arginine Plus have?

5 labels are on file under this name since October 25, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 295630 (current) Entered August 23, 2023 · on the market · 120 tablets · UPC 7 55571 91055 4
  2. Label 266555 Entered May 19, 2022 · off the market March 23, 2024 · 120 tablets
  3. Label 215660 Entered March 24, 2020 · off the market September 7, 2022 · 120 tablets · UPC 7 55571 91055 4
  4. Label 209550 Entered December 22, 2019 · off the market December 20, 2019 · 120 tablets
  5. Label 26280 Entered October 25, 2013 · off the market July 24, 2018 · 120 tablets

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Metagenics (manufacturer), Gig Harbor, WA. All Metagenics products.

Where next?