Prime Male vs TestoFuel: Which Formula Fits Your Goal?

BRUTAL FORCE / FORMULA & TRAINING

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TestoFuel's training identity and Prime Male's vitality positioning can distract from their ingredient differences. Prime Male offers KSM-66; TestoFuel offers maca and oyster. Testogen is our preferred broader formula, with DBULK as the muscle-building alternative.

Overall formula pick

Testogen Ultimate

Choose Testogen for our preferred all-round support formula. Within the named pair, Prime Male suits a KSM-66 priority; DBULK addresses the separate muscle-building goal.

Explore Testogen

The formula comparison

Prime Male

Prime Male Vitality; 4 capsules.

Amounts refer to the stated serving for each product, not one capsule. Extract weights, raw-herb equivalents and elemental mineral amounts are different measurements.

Swipe the table to see every product column.

Complete active-ingredient comparison
Ingredient Testogen Ultimate
4 capsules 		Prime Male
4 capsules 		TestoFuel
4 capsules
D-aspartic acid 2,025 mg 1,600 mg; calcium chelate 2,000 mg
Ashwagandha 200 mg; KSM-66 root extract 300 mg; KSM-66 root extract Not included
Fenugreek 100 mg; seed extract, at least 50% saponins Not included 50 mg; seed extract, equivalent to 800 mg seed powder
Panax ginseng 100 mg; extract, 5% ginsenosides 120 mg; whole-plant extract, 5% ginsenosides 100 mg; Asian red Panax ginseng extract
Nettle 80 mg; root extract, 10:1 160 mg; root extract, 10:1 Not included
Black pepper extract 7 mg; BioPerine, 95% piperine Included; 95% piperine; online unit requires bottle confirmation Not included
Vitamin D3 100 mcg (4,000 IU); cholecalciferol 100 mcg (4,000 IU); cholecalciferol 100 mcg (4,000 IU); cholecalciferol
Vitamin K2 90 mcg; menaquinone-7 (MK-7) 45 mcg; MK-7 Included; amount and specific K2 form not verified because the online table has inconsistent units
Vitamin B6 8 mg; pyridoxal-5-phosphate (P5P) 7.5 mg; P5P Not included
Magnesium 80 mg; bisglycinate and citrate 100 mg; citrate Included as magnesium aspartate; amount not verified because the online table has inconsistent units
Zinc 25 mg; monomethionine Included as zinc citrate; amount requires bottle confirmation because the indexed table and percentage daily value conflict 10 mg; monomethionine and aspartate
Copper 0.5 mg; bisglycinate Not included Not included
Boron 5 mg; bisglycinate 5 mg; amino-acid chelate 8 mg; chelate, specific chelate not identified
Luteolin Not included 60 mg in the indexed manufacturer table Not included
Maca Not included Not included 180 mg; root extract, equivalent to 1,800 mg root powder
Oyster Not included Not included 100 mg; extract

“Not included” indicates confirmed absence from the assessed formula. “Not verified” identifies a gap in the information available for this comparison; it does not mean the manufacturer hides the amount.

Testogen Ultimate: 13 active ingredients. Mineral figures are nutrient amounts, not the weight of the full mineral compound.

Prime Male: Prime Male Vitality. All 12 manufacturer-identified active ingredients are shown. Unverified quantities and the conflicting black-pepper unit are marked explicitly. This assessed formula uses Panax ginseng; older mucuna-containing versions are not mixed into it.

TestoFuel: All 10 active ingredients are shown. The manufacturer’s online magnesium and K2 entries contain conflicting units; both ingredients are present, but those two quantities require a bottle-panel check.

Capsule and other ingredients

Testogen Ultimate: Vegetable-cellulose capsule and NuFLOW rice-hull ingredient.

Prime Male: Other-ingredient list not verified for this version.

TestoFuel: Vegetable-cellulose capsule. Contains oyster.

TestoFuel

published 10-ingredient TestoFuel formula; 4 capsules.

A gym-oriented name is not the deciding evidence

TestoFuel's 2,000 mg D-aspartic acid does not establish a superior training effect over Prime Male's differently described calcium-chelate entry. Research does not justify using D-aspartic acid weight as a muscle-gain score. 1

Prime Male's named KSM-66 is a clear distinction, at 300 mg. TestoFuel instead uses maca and oyster, which should be chosen because those ingredients fit the buyer. The oyster entry also makes shellfish suitability an early decision rather than a footnote.

Why our first recommendation is a third formula

Testogen retains KSM-66 and combines it with D-aspartic acid, other botanicals and a broad set of specified nutrients. That offers a coherent daily-support route without the oyster ingredient. It does not exceed Prime Male on KSM-66 amount, and we do not imply otherwise.

Testogen’s short other-ingredient list and clearly named forms support its broader formula. TestoFuel also has a simple capsule-ingredient list; our preference rests on the active combination, particularly Testogen’s KSM-66 and additional nutrients.

The DBULK option for a muscle-building goal

DBULK is the product we feature when the purchase is explicitly about muscle building. Its leucine-and-botanical design differs from both the maca-and-oyster approach and Prime Male's KSM-66-led blend. That purpose makes it relevant, without establishing that any of the three is a replacement for progressive training.

  • Muscle-oriented formula with L-leucine, ashwagandha and MSM.
  • Also described with puncture vine, sodium hyaluronate, suma and vitamin D3.
  • Three capsules daily on the product page; follow the directions on the supplied bottle.
View DBULK from Brutal Force

Inside our overall pick: Testogen Ultimate

Formula coverage
13 actives, all amounts disclosed; four-capsule daily serving
Botanical specification
KSM-66 root extract 200 mg; Panax ginseng 100 mg at 5% ginsenosides; nettle root 80 mg at 10:1
Further active amounts
D-aspartic acid 2,025 mg; fenugreek extract 100 mg; BioPerine 7 mg
Mineral detail
Zinc monomethionine 25 mg; magnesium 80 mg as bisglycinate and citrate; boron bisglycinate 5 mg; copper bisglycinate 0.5 mg
Vitamins
D3 100 mcg; K2 90 mcg as MK-7; B6 8 mg as P5P
Clean-label design and heritage
Vegetable cellulose and NuFLOW; brand developed since 2014, now in its fourth generation

Ingredient breadth, disclosed quantities and named forms explain the selection. They are not measurements of testosterone change, strength or muscle gained from this finished formula.

Explore the full Testogen formula

Choose by the goal behind the search

Best overall

Testogen Ultimate

Broad formula, named premium forms and fully stated active amounts.

Compare Testogen options
Our muscle-building selection

Brutal Force DBULK

A training-oriented ingredient mix to assess for a specific muscle-building goal.

See the DBULK formula
Value alternative

TesTotal

A more economical route when a smaller testosterone-support formula fits.

Check TesTotal options

Suitability alongside your existing routine

Review overlapping vitamins, minerals and herbs before adding a product to an existing training stack. Testogen contains 4,000 IU (100 mcg) D3, so its dose needs to be considered with other sources. A preferred formula is not automatically suitable for every user. 2

Unwanted reactions warrant stopping the product and obtaining appropriate advice. Ongoing symptoms need proper assessment; this comparison cannot diagnose testosterone deficiency or replace treatment. 3

Take a closer look at our overall pick

View Testogen Ultimate ingredients

References

  1. Melville et al. (2015). D-aspartic acid and testosterone in resistance-trained men.
  2. Rizzoli (2021). Vitamin D supplementation: upper limit for safety revisited.
  3. Bhasin et al. (2018). Testosterone therapy in men with hypogonadism: clinical practice guideline.