L-Arginine Alpha Ketoglutarate

by Hard Rhino · powder · 125 grams

On the market (NIH)
UPC 8 18136 46271 1
DSLD label 72431
Serving 3.5 g (~1/2 tbsp)
35 servings

L-Arginine Alpha Ketoglutarate by Hard Rhino lists one ingredient: 3,500 mg of L-arginine alpha ketoglutarate per serving of 3.5 g. Its current label entered the NIH Dietary Supplement Label Database on April 25, 2017.

What is in L-Arginine Alpha Ketoglutarate?

Each row as the label prints it, per serving of 3.5 g. 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 Alpha Ketoglutarate: Supplement Facts rows against the market (DSLD label 72431, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
L-Arginine Alpha Ketoglutarate	3,500 mg		Higher than 90% of 322 products listing arginine alpha ketoglutarate (median 1 g). Per day at the most servings: 7 g.

Source: NIH ODS Dietary Supplement Label Database, label 72431 (entered April 25, 2017), 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?

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:

Its 3.5 g of L-arginine alpha ketoglutarate (filed by NIH under arginine alpha ketoglutarate) is higher than 90% of the 322 arginine alpha ketoglutarate products that print an amount; 19 list more.

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.

Aakg 3500NOW · off the market same ingredients
Pure L-Arginine Free Form Amino PowderHard Rhino same ingredients
AAKG 3500 MilligramsNutraBio same ingredients
Aakg 3500NOW Sports same ingredients
100% Pure AAKGNutraBio · off the market same ingredients
L-Arginine Alpha KetoglutarateHR Supplements 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 Use: As a dietary supplement, take 3500 mg (~1/2 tbsp) 1-2 times daily with 16 ounces of water or suitable beverage. Taken once in the morning on an empty stomach and/or again one hour prior to workout for best results.; 1 Carefully measure out suggested serving size using a microscale. 2 Add to preferred beverage. 3 Mix well. 4 Drink within 10-15 minutes. How to use; Storage: Store in a cool, dry place. Re-seal zipper immediately after use to preserve freshness.
Warnings: Warning: Keep out of the reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions and/or taking prescription drug(s) or OTC medication(s).; Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions and/or taking prescription drug(s) or OTC medication(s).; Always consult with a qualified health physician before taking any new dietary supplement.; Do not use or consume if pressure seal is broken.; Do not use or consume if seal is broken.
Allergens and what it does not contain: No added fillers; Allergens: This product contains no soy, dairy, dairy byproducts, eggs, shellfish, wheat, gluten, tree nuts, or sesame seeds.; This is a non-GMO ingredient.

Source: label statements in DSLD label 72431.

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): Lab tested for purity and quality; Packaged in USA.

How many labels does L-Arginine Alpha Ketoglutarate have?

3 labels are on file under this name since March 24, 2017: other sizes, label designs and reformulations. The current one leads this page.

Label 72432 Entered April 25, 2017 · off the market August 11, 2022 · 500 grams · UPC 8 18136 45941 4
Label 72431 (current) Entered April 25, 2017 · on the market · 125 grams · UPC 8 18136 46271 1
Label 71936 Entered March 24, 2017 · on the market · 5 kg · UPC 7 98711 50012 3

DSLD also links this label to: L-Arginine Alpha Ketoglutarate (package size difference, same product).

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

Who makes it?

The label names Guardian Wholesale (manufacturer), Phoenix, AZ. All Hard Rhino products.