PlainVitamins

L-Arginine Extra Strength

by Havasu Nutrition · capsule · 60 capsules

  • On the market (NIH)
  • UPC 8 50008 46416 4
  • DSLD label 326584
  • Serving 2 capsules
  • 30 servings

L-Arginine Extra Strength by Havasu Nutrition lists 4 ingredients, 4 with an amount per serving of 2 capsules, such as 400 mg of L-arginine hydrochloride, 400 mg of aakg, 400 mg of L-citrulline malate and 100 mg of beet, powder. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2025.

What is in L-Arginine Extra Strength?

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).

L-Arginine Extra Strength: Supplement Facts rows against the market (DSLD label 326584, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Arginine Hydrochloride400 mgArginine in L-Arginine Extra Strength against 1,455 products400 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.400 mg

60% of 1,455 products listing arginine give more (median 500 mg).

Aakg400 mgArginine Alpha Ketoglutarate in L-Arginine Extra Strength against 322 products0.4 g per serving; the middle half of products list 0.75 g to 1.99 g, the median 1 g.0.4 g

85% of 322 products listing arginine alpha ketoglutarate give more (median 1 g).

L-Citrulline Malate400 mgCitrulline in L-Arginine Extra Strength against 1,209 products0.4 g per serving; the middle half of products list 1 g to 5 g, the median 3 g.0.4 g

89% of 1,209 products listing citrulline give more (median 3 g).

Beet, Powder100 mgBeet in L-Arginine Extra Strength against 850 products100 mg per serving; the middle half of products list 10.63 mg to 500 mg, the median 100 mg.100 mg

48% of 850 products listing beet give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 326584 (entered March 25, 2025), 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:

  • 85% of the 322 products that print an amount of arginine alpha ketoglutarate list more than its 0.4 g of aakg (filed by NIH under arginine alpha ketoglutarate) (median 1 g).

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?

The products whose ingredient lists overlap most with L-Arginine Extra Strength'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
Suggested Use: Take two capsules daily preferably with a meal or as directed by your healthcare provider.
Warnings
Warning: Use only as directed.
Consult your physician before use if you are pregnant or nursing, have a serious medical condition, or use prescription medications.
For adult use only.
Keep out of reach of children.
Do not use if safety seal is damaged or missing.
To report an adverse event or for product information contact: support@havasunutrition.com
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 326584.

What else is on the label?

Other ingredients: Gelatin, Magnesium Stearate, Silicon Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Formulated in the USA Source from a GMP certified facility Good Manufacturing Practice Consistent quality 60 days Money back guaranteed.

How many labels does L-Arginine Extra Strength have?

3 labels are on file under this name since April 23, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 326584 (current) Entered March 25, 2025 · on the market · 60 capsules · UPC 8 50008 46416 4
  2. Label 292638 Entered June 22, 2023 · on the market · 60 capsules · UPC B01MS461VC
  3. Label 217668 Entered April 23, 2020 · off the market June 13, 2022 · 60 capsules · UPC B01MS461VC

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

Who makes it?

The label names Havasu Nutrition (distributor), Tampa, FL. All Havasu Nutrition products.

Where next?