PlainVitamins

Test WORx

by SuperiorLabs · capsule · 60 vegetable capsules

  • On the market (NIH)
  • UPC 8 50569 00600 1
  • DSLD label 338198
  • Serving 2 capsules
  • 30 servings

Test WORx by SuperiorLabs lists 9 ingredients, 4 with an amount per serving of 2 capsules, such as 40 mg of niacin, 5 mg of vitamin B6, 500 mcg of vitamin B12 and 20 mg of zinc; 5 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2025.

What is in Test WORx?

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).

Test WORx: Supplement Facts rows against the market (DSLD label 338198, January 2026 release)
IngredientAmount% DVAmong products listing it
Niacinas Niacinamide40 mg250%Niacin in Test WORx against 12,413 products40 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg40 mg

Higher than 71% of 12,413 products listing niacin (median 20 mg). 1.1 times the adult UL a day.

Vitamin B6as Pyridoxal 5-Phosphate5 mg294%Vitamin B6 in Test WORx against 15,277 products5 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg5 mg

51% of 15,277 products listing vitamin B6 give more (median 6 mg).

Vitamin B12as Methylcobalamin500 mcg20,833%Vitamin B12 in Test WORx against 14,425 products500 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg500 mcg

Higher than 82% of 14,425 products listing vitamin B12 (median 36 mcg).

Zincas Zinc Citrate20 mg182%Zinc in Test WORx against 13,186 products20 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg20 mg

Higher than 79% of 13,186 products listing zinc (median 11 mg).

Test WORx Proprietary Blend950 mg
Tribulus terrestris Extractin the blend, no amount given
L-Arginine Hydrochloridein the blend, no amount given
Maca Root Extractas Lepidium meyenii Root Extract4:1in the blend, no amount given
Stinging Nettle Leaf Extractin the blend, no amount given
Lj100as Longjack Root Extractin the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 338198 (entered September 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:

  • At 1 serving a day, the most its directions give, the label lists 40 mg of niacin, 1.1 times the adult Tolerable Upper Intake Level.

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 Test WORx'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: As a dietary supplement, take 2 capsules in the morning, 15 minutes before a meal. Cycle five days on, two days off. One week in between bottles.
Warnings
Warning: Consult your physician before using this product.
This product is not intended for use by those with a serious medical condition, pregnant or nursing.
Not intended for use by individuals under the age of 18. Keep out of reach of children.
Allergens and what it does not contain
Test WORx contains absolutely no magnesium stearate, dioxides, preservatives or other potentially harmful artificial ingredients of any kind.
Metal Safe Heavy Metal Tested

Source: label statements in DSLD label 338198.

What else is on the label?

Other ingredients: Cellulose, Rice.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Metal Safe Heavy Metal Tested GMP Compliant Facility Manufactured in the USA with globally sourced ingredients.

How many labels does Test WORx have?

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

  1. Label 338198 (current) Entered September 25, 2025 · on the market · 60 vegetable capsules · UPC 8 50569 00600 1
  2. Label 256002 Entered October 22, 2021 · off the market June 17, 2025 · 60 vegetable capsules · UPC 8 50569 00600 1
  3. Label 228106 Entered June 24, 2020 · off the market July 1, 2021 · 60 vegetable capsules · UPC 8 50569 00600 1
  4. Label 74380 Entered May 24, 2017 · off the market March 5, 2020 · 60 vegetable capsules · UPC 8 50569 00600 1

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

Who makes it?

The label names Superior Labs, LLC. (distributor), Park City, UT. All SuperiorLabs products.

Where next?