PlainVitamins

Strength Test

by Power Blendz Nutrition · capsule · 60 capsules

  • On the market (NIH)
  • UPC 6 58059 60020 9
  • DSLD label 263922
  • Serving 1 capsule
  • 60 servings

Strength Test by Power Blendz Nutrition lists 11 ingredients, 11 with an amount per serving of 1 capsule, such as 25 mg of vitamin B6, 6.5 mg of magnesium, 4.5 mg of zinc and 200 mg of tribulus terrestris extract. Its current label entered the NIH Dietary Supplement Label Database on June 16, 2022.

What is in Strength Test?

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).

Strength Test: Supplement Facts rows against the market (DSLD label 263922, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin B6as Pyridoxine Hydrochloride25 mg1,250%Vitamin B6 in Strength Test against 15,277 products25 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg25 mg

Higher than 76% of 15,277 products listing vitamin B6 (median 6 mg).

Magnesiumas Magnesium Oxide6.5 mg2%Magnesium in Strength Test against 14,003 products6.5 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg6.5 mg

96% of 14,003 products listing magnesium give more (median 86 mg).

Zincas Zinc Methionine4.5 mg30%Zinc in Strength Test against 13,186 products4.5 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg4.5 mg

80% of 13,186 products listing zinc give more (median 11 mg).

Tribulus terrestris Extractas Tribulus terrestris Fruit Extract, Tribulus terrestris Extract200 mgTribulus in Strength Test against 555 products200 mg per serving; the middle half of products list 100 mg to 750 mg, the median 300 mg.200 mg

61% of 555 products listing tribulus give more (median 300 mg).

Dhea100 mgDHEA in Strength Test against 454 products100 mg per serving; the middle half of products list 25 mg to 50 mg, the median 25 mg.100 mg

Higher than 85% of 454 products listing DHEA (median 25 mg).

Deer Antler powder100 mgDeer Velvet in Strength Test against 100 products100 mg per serving; the middle half of products list 50 mg to 100 mg, the median 50 mg.100 mg

Higher than 65% of 100 products listing deer velvet (median 50 mg).

Tongkat Ali powder100 mgEurycoma Longifolia in Strength Test 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).

5-Methyl-7-Methoxy Isoflavone50 mg
Rhodiola rosea extract5% extract50 mgRhodiola in Strength Test against 945 products50 mg per serving; the middle half of products list 50 mg to 250 mg, the median 100 mg.50 mg

74% of 945 products listing rhodiola give more (median 100 mg).

Alpha Lipoic Acid25 mgAlpha Lipoic Acid in Strength Test against 2,407 products25 mg per serving; the middle half of products list 25 mg to 150 mg, the median 50 mg.25 mg

68% of 2,407 products listing alpha lipoic acid give more (median 50 mg).

Octacosanolas Sugar Cane wax500 mcgOctacosanol in Strength Test against 186 products500 mcg per serving; the middle half of products list 200 mcg to 1,000 mcg, the median 200 mcg.500 mcg

Higher than 59% of 186 products listing octacosanol (median 200 mcg).

Source: NIH ODS Dietary Supplement Label Database, label 263922 (entered June 16, 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?

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:

  • 96% of the 14,003 products that print an amount of magnesium list more than its 6.5 mg of magnesium (median 86 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 Strength Test'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: 1 capsule daily preferably with a meal or as directed by a healthcare professional.
Warnings
Warning: Not for use by individuals under the age of 18 years.
Do not use if pregnant or nursing.
Consult a physician or licensed qualified healthcare professional before using this product if you have, or have a family history of, breast cancer, prostate cancer, prostate enlargement, heart disease, low "good" cholesterol (HDL), or if you are using any other dietary supplement, prescription drug, or over-the-counter drug.
Do not exceed recommended serving. Exceeding recommended serving may cause serious adverse health effects. Possible side effects include acne, hair loss, hair growth on the face (in women), aggressiveness, irritability, and increased levels of estrogen. Discontinue use and call a physician or licensed qualified healthcare professional immediately if you experience rapid heartbeat, dizziness, blurred vision, or other similar symptoms.
This product is manufactured and packaged in a facility which may also process milk, soy, wheat, egg, peanuts, tree nuts, fish and crustacean shellfish.
To report any adverse events call 1-800-332-1088.
Keep out of the reach of children.
Do not use if safety seal is damaged or missing.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 263922.

What else is on the label?

Other ingredients: Gelatin, Rice powder, Vegetable Magnesium Stearate, Silicon Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Sourced from a GMP certified facility Good manufacturing practice Quality assured.

How many labels does Strength Test have?

One label is on file, entered on June 16, 2022.

  1. Label 263922 (current) Entered June 16, 2022 · on the market · 60 capsules · UPC 6 58059 60020 9

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

Who makes it?

The label names Power Blendz (distributor), Cincinnati, OH. All Power Blendz Nutrition products.

Where next?