PlainVitamins

Prelox Blue

by Herbalife Nutrition · tablet or pill · 60 tablets

  • Off the market since September 2024 (NIH)
  • UPC 0039US
  • DSLD label 270985
  • Serving 2 tablets
  • 30 servings

Prelox Blue by Herbalife Nutrition lists 4 ingredients, 4 with an amount per serving of 2 tablets, such as 760 mg of L-arginine hydrochloride, 640 mg of aspartic acid, 90 mg of L-taurine and 40 mg of pycnogenol. Its current label entered the NIH Dietary Supplement Label Database on July 21, 2022.

What is in Prelox Blue?

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).

Prelox Blue: Supplement Facts rows against the market (DSLD label 270985, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Arginine Hydrochloride760 mgArginine in Prelox Blue against 1,455 products760 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.760 mg

Higher than 61% of 1,455 products listing arginine (median 500 mg). Per day at the most servings: 1,520 mg.

Aspartic Acid640 mgAspartic Acid in Prelox Blue against 377 products640 mg per serving; the middle half of products list 106 mg to 1,846 mg, the median 337 mg.640 mg

Higher than 59% of 377 products listing aspartic acid (median 337 mg). Per day at the most servings: 1,280 mg.

L-Taurine90 mgTaurine in Prelox Blue against 2,337 products90 mg per serving; the middle half of products list 110 mg to 1,000 mg, the median 500 mg.90 mg

85% of 2,337 products listing taurine give more (median 500 mg). Per day at the most servings: 180 mg.

Pycnogenol40 mg

Source: NIH ODS Dietary Supplement Label Database, label 270985 (entered July 21, 2022), 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 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 Prelox Blue'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
Recommended use: Take 2 tablets 2 times a day.

Source: label statements in DSLD label 270985.

What else is on the label?

Other ingredients: Corn Starch, Microcrystalline Cellulose, Croscarmellose Sodium, Hydroxypropyl Methylcellulose, Magnesium Stearate, Titanium Dioxide, Silicon Dioxide, Triacetin, Acacia Gum, FD&C Blue #1, FD&C Blue #2.

How many labels does Prelox Blue have?

2 labels are on file under this name since June 23, 2021: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 270985 (current) Entered July 21, 2022 · off the market September 24, 2024 · 60 tablets · UPC 0039US
  2. Label 250720 Entered June 23, 2021 · off the market April 12, 2022 · 60 tablets · UPC 0039US

DSLD also links this label to: Prelox Blue (image difference, same product), Prelox Blue (image 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 Herbalife International of America, Inc. (manufacturer, distributor), Los Angeles, CA. All Herbalife Nutrition products.

Where next?