PlainVitamins

Isotest

by Cybergenics · capsule · 60 capsules

  • On the market (NIH)
  • UPC 0 35046 12347 5
  • DSLD label 299419
  • Serving 1 capsule
  • 60 servings

Isotest by Cybergenics lists 5 ingredients, 5 with an amount per serving of 1 capsule, such as 250 mg of tribulus terrestris extract, 100 mg of longjack root extract, 30 mg of nettle root extract and 30 mg of dimethyl chrysin. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2023.

What is in Isotest?

Each row as the label prints it, per serving of 1 capsule. 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).

Isotest: Supplement Facts rows against the market (DSLD label 299419, January 2026 release)
IngredientAmount% DVAmong products listing it
Tribulus terrestris extractas Protodioscin, Saponins250 mgTribulus in Isotest against 555 products250 mg per serving; the middle half of products list 100 mg to 750 mg, the median 300 mg.250 mg

51% of 555 products listing tribulus give more (median 300 mg).

Longjack Root Extract100 mgEurycoma Longifolia in Isotest against 496 products100 mg per serving; the middle half of products list 75 mg to 212.47 mg, the median 100 mg.100 mg

44% of 496 products listing eurycoma longifolia give more (median 100 mg).

Nettle root extract30 mgStinging Nettle in Isotest against 710 products30 mg per serving; the middle half of products list 50 mg to 300 mg, the median 120 mg.30 mg

81% of 710 products listing stinging nettle give more (median 120 mg).

Dimethyl chrysin30 mg
Bioperineas Black Pepper Fruit Extract2 mgBlack Pepper in Isotest against 2,363 products2 mg per serving; the middle half of products list 5 mg to 10 mg, the median 5 mg.2 mg

93% of 2,363 products listing black pepper give more (median 5 mg).

Source: NIH ODS Dietary Supplement Label Database, label 299419 (entered November 22, 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:

  • 93% of the 2,363 products that print an amount of black pepper list more than its 2 mg of bioperine (filed by NIH under black pepper) (median 5 mg).

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 Isotest'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: One (1) capsule daily with food.
Warnings
Keep out of reach of children
Do not purchase if seal is broken
Allergens and what it does not contain
Caffeine free Non GMO Gluten free
Storage
Protect from heat, light, and moisture Store in a cool, dry place

Source: label statements in DSLD label 299419.

What else is on the label?

Other ingredients: Dicalcium Phosphate, Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Silica.

How many labels does Isotest have?

One label is on file, entered on November 22, 2023.

  1. Label 299419 (current) Entered November 22, 2023 · on the market · 60 capsules · UPC 0 35046 12347 5

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

Who makes it?

The label names Windmill Health Products (distributor), West Caldwell, NJ. All Cybergenics products.

Where next?