TestoPrime vs TestoFuel: Which Testosterone Booster Reigns Supreme?

When it comes to testosterone boosters, two popular options that often come up in discussions are TestoPrime and TestoFuel. Both supplements claim to enhance testosterone levels and offer various benefits for men. However, determining which one is better suited for your needs can be challenging. In this in-depth comparison, we will delve into the ingredients, dosage, effectiveness, and side effects of TestoPrime and TestoFuel. som

Short Answer: It's TestoFuel, at least in 99.9% of cases. Whilst a lot of the marketing of TestoPrime suggests that their Ashwagandha content from KSM-66 is up to the 600mg dosage required for testosterone production due to it being a strong extract, the 600mg dosage is of KSM-66 or a similarly strong extract. Meaning the dose in TestoPrime isn't effective. Which is something a lot of other reviews seem to miss out. 

And considering a lot of the ingredients are the same, so once we account for that, we've got garlic vs boron, green tea extract vs maca and oyster vs pomegranate. And TestoFuel wins on all of these shoot outs, boron is far more effective and well backed than garlic, oyster beats pomegranate at this dosage, because you need 50x more pomegranate for it to be useful. 

And Green Tea loses to Maca, neither of them actually boost testosterone levels, but Maca does improve performance and blood flow more than green tea, although green tea has some minor advantages for mood. Testofuel also has the better vitamin blend, with magnesium, zinc, k2 and vitamin D all ideally dosed, whilst TestoPrime has more Zinc than is beneficial, no magnesium, no K2, less vitamin D and B vitamins, which while helpful if you're deficient said deficiency is incredibly rare. 

As a result TestoFuel is the better option from the two testosterone boosters. 

That's not to say that either of these test boosters are bad, TestoPrime is actually pretty good, it's just not as good as TestoFuel in almost all use cases, unless you happen to be a hyper responder to green tea.

You can read our full review of TestoFuel here 

Or alternatively visit Testofuel.com for the latest deals.

Shared Testofuel And TestoPrime Ingredients

Despite their differences, TestoPrime and TestoFuel share some common ingredients known for their testosterone-boosting properties:

D-Aspartic Acid - D-Aspartic acid (DAA) is the most abundant ingredient in both supplements. It effectively increases testosterone levels by up to 42% in as little as 12 days. DAA achieves this by regulating and boosting the production of luteinizing hormone, a crucial component of testosterone production.

Fenugreek Extract - Fenugreek is another testosterone-boosting substance found in both TestoPrime and TestoFuel. Regular supplementation with Fenugreek has been shown to increase testosterone levels by 46%. It is also associated with improved libido and sperm quality, making it beneficial for men experiencing infertility.

Vitamin D - Maintaining sufficient Vitamin D levels is crucial for testosterone production and overall sexual health. Low Vitamin D content increases the risk of testosterone deficiency. Regular intake of Vitamin D supplements can prevent this deficiency and ensure optimal testosterone levels.

Ginseng Extract - Ginseng, a well-known ingredient in traditional medicine, is believed to have aphrodisiac benefits, including improved libido and sexual performance. A study conducted in 2017 showed the potential of Ginseng as a treatment for erectile dysfunction.

Zinc - Zinc plays a vital role in testosterone production. A Zinc deficiency can lead to significantly low testosterone levels. Research has shown that a low Zinc diet can decrease testosterone levels by up to 75% after 20 weeks. Taking Zinc supplements can counteract this deficiency and restore testosterone levels to normal.

TestoPrime Breakdown

TestoPrime is a natural testosterone booster manufactured by UK company Wolfson Brands. This supplement boasts a blend of clinically dosed ingredients that aim to increase testosterone production, enhance muscle strength, accelerate muscle growth, and reduce body fat. TestoPrime also claims to improve endurance, concentration, sleep, and libido. Ultimately TestoPrime throw a few too many novelty ingredients in here and could've improved the dosages of the more effective ones to improve the supplement.

Common TestoPrime Ingredients Dosage Differences

TestoPrime contains a potent combination of 12 ingredients that work synergistically to optimize testosterone levels. Some key ingredients include:

  1. D-Aspartic Acid (2000mg): This amino acid stimulates the release of luteinizing hormone (LH), which in turn enhances testosterone production.
  2. Panax Ginseng (40mg): Known for its adaptogenic properties, Ginseng may increase testosterone levels by stimulating the release of LH..
  3. Fenugreek (200mg): Fenugreek inhibits aromatase, an enzyme that converts testosterone into estrogen, and may also stimulate LH secretion.
  4. Zinc (40mg): This is a good standard inclusion for any testosterone supplement as even a small deficiency can tank testosterone leves, however the RDI is 15mg and supplementing beyond that has been shown to have no benefit.
  5. Vitamin D3 (27mcg): Studies have suggested that vitamin D may have a positive impact on testosterone levels. Vitamin D receptors are found in cells of the testes, where testosterone is produced, indicating a potential direct effect on testosterone synthesis. And in the US somewhere between 30-50% of men are deficient making it a solid inclusion. It's also been shown to raise testosterone in deficient men and improve athletic performance well beyond the RDI. But, TestoPrime could've benefited from a larger dose.

Unique TestoPrime Ingredients

  1. Vitamin B6 (Pyridoxine): Vitamin B6 is involved in the production of testosterone. It helps regulate the synthesis of androgens, which are precursors to testosterone. Studies have shown that B6 deficiency can lead to decreased testosterone levels.
  2. Vitamin B12 (Cobalamin): Vitamin B12 plays a role in maintaining healthy testosterone levels. It helps in the synthesis of DNA and red blood cells, which are crucial for testosterone production. Low levels of vitamin B12 may lead to decreased testosterone levels and reduced sperm count, neither of these are bad inclusions for TestoPrime, but the deficiency is incredibly rare.
  3. KSM-66 Ashwagandha Extract (55.68mg): This extract helps regulate cortisol levels, reducing stress and promoting healthy testosterone production. But you need 600mg of this exact extract for it to be effective for raising test levels, or 300mg for sleep and mood.
  4. Green Tea Extract (200mg): Green tea extract supports testosterone levels by inhibiting the enzymes that convert testosterone into estrogen.
  5. Pomegranate: Studies have suggested that pomegranate may have a positive impact on testosterone production. Some research indicates that pomegranate extract may enhance the activity of enzymes involved in testosterone synthesis, potentially leading to increased testosterone levels But, the volumes are far higher than in TestoPrime making this largely a novelty ingredient.
  6. Garlic: Similarly to Pomegranate there are some limited studies suggesting this could be of benefit to testosterone slevels, but the dose is 100s of times higher than what we have here.
  7. Bioperine: Bioperine aids with absorption of other ingredients, it's in a lot of supplements in general, although there isn't much in TestoPrime that warrants an absorbtion aid, it's completely fine.


Taking TestoPrime regularly can lead to a range of benefits, including:

  • Increased testosterone production
  • Improved muscle strength
  • Accelerated muscle growth
  • Improved mood

Dosage and Side Effects

The recommended dosage for TestoPrime is four capsules per day, preferably taken with breakfast. As TestoPrime is made from all-natural ingredients, there are no reported side effects. However, if you have any pre-existing medical conditions or are taking medication, it is always advisable to consult with your healthcare provider before starting any new supplement. Also a lot of people are intollerant to Ashwagandha meaning you are more likely to have stomach issues even at a low dose, although most people tollerate it well and it is a good ingredient when dosed correctly.

TestoFuel Breakdown

TestoFuel, another popular natural testosterone booster, is manufactured by Roar Ambition. Marketed primarily as a muscle-building supplement, TestoFuel aims to increase muscle strength, accelerate fat reduction, improve mood and self-esteem, and boost overall performance and recovery. We rated it as the best testosterone booster for muscle growth on the market right now. With it coming second only to Prime Male overall.

Common Ingredients Dosage Differences

TestoFuel contains 10 research-backed ingredients that work together to optimize testosterone levels. Some key ingredients include:

  1. D-Aspartic Acid: Similar to TestoPrime, TestoFuel utilizes D-Aspartic Acid to stimulate testosterone production.
  2. Vitamin D: Adequate Vitamin D levels are crucial for maintaining healthy testosterone levels. Testofuel contains a lot more than TestoPrime and considering it's been shown to boost athletic performance far beyond the RDI this would have been a better vitamin for TestoPrime to have a higher dose of rather than zinc.
  3. Oyster Extract: Oyster extract inhibits the aromatase enzyme, preventing the conversion of testosterone into estrogen.
  4. Ginseng: Ginseng improves libido, sexual performance, and overall mood.
  5. Fenugreek: Fenugreek supports testosterone production and enhances sexual wellbeing.
  6. Zinc 15mg: As we mentioned earlier 15mg is more than enough, in fact it's your entire daily dose, so unless you're not eating this has got you covered. And as zinc is essential for testosterone production that's ideal.

TestoFuel Unique Ingredients

  1. Boron 10mg: A lot of studies have shown that boron supplementation may increase testosterone levels in men, especially in those with low levels of this hormone, but it has also been shown to raise levels in healthy men. It's one of the more well backed ingredients for test boosters, takes up little capsule space and is a win for testofuel.
  2. Maca 1800mg equivilant: Maca contains various compounds that may influence hormone levels and sexual function. It is believed to work by balancing hormone levels, reducing stress, and improving energy and stamina. Additionally, maca is rich in nutrients like vitamins, minerals, and antioxidants, which may contribute to its potential benefits on libido. Interestingly it doesn't actually seem to do much to raise testosterone, but double blind studies have showed it improves workout performance as well as it's other effects, this is much better as an inclusion than the underdosed alternatives in TestoPrime as it's actually within the effective range.
  3. Vitamin K2 18mcg: A few studies suggest that vitamin K2 supplementation may have a positive impact on testosterone production. There are also calls within the medical comunity for K2 to be given an independant RDI from K1 as they perform different functions and K1 doesn't convert to K2 effeciently. It's not uncommon for men to be short of K2, particularly whilst dieting.
  4. Magnesium 70mg: Not a huge dose of magnesium, but most men are only mildly or "sub clinically" deficient. Seeing as even this small deficiency can tank testosterone levels and having higher levels of magnesium has been shown to effective at improving muscle growth a win in the vitamin section for testofuel.


Regular use of TestoFuel may result in the following benefits:

  • Increased muscle strength and faster muscle growth
  • Accelerated fat reduction
  • Improved mood, confidence, and self-esteem
  • Enhanced workout performance, recovery, and effectiveness
  • Boosted energy levels and overall vitality
  • Heightened Libido

Dosage and TestoFuel Side Effects

The recommended dosage for TestoFuel is four capsules per day, ideally taken with a meal. Similar to TestoPrime, TestoFuel is made from natural ingredients and has minimal reported side effects. However, as with any supplement, it is advisable to consult with a healthcare professional if you have any underlying medical conditions or are taking medication. Due it not containing Ashwagandha it is less likely to cause stomach upset.

Pricing Differences Between Testofuel and TestoPrime

Prices & Offers

Here's a breakdown of the prices and offers for TestoPrime and TestoFuel:


  • All purchases include fast and free shipping
  • Big discounts for bulk purchases


  • Free shipping included on all purchases
  • Bulk purchases include large discounts plus e-book and guide
  • No money-back guarantee

Key Differences: TestoPrime vs TestoFuel

While TestoPrime and TestoFuel are both effective testosterone boosters, they have different areas of focus and ingredient compositions. Here are some key differences between the two:

  • Focus: TestoFuel focuses on muscle growth, but also wins out on libido, whilst TestoPrime may have a slight edge on appetite suppression with green tea, there are better hunger blockers than that.
  • Ingredient Composition: While both supplements contain D-Aspartic Acid, TestoPrime includes additional ingredients like Garlic and Pomegrantate are lagely novelty, with Green Tea Extract offering minimal benefits at best, while TestoFuel features a better vitamin blend, Boron, Oyster Extract and Maca.

Conclusion: Which Is Better TestoFuel of TestoPrime

As we said in the intro it's TestoFuel, hands down. If you are looking for an all-encompassing testosterone booster that offers long-term benefits, TestoFuel is pretty good and if you're looking for the best muscle focused testosteerone booster then it's the best on the market today. TestoPrime isn't a bad supplement, it's just not quite as good. Ultimately, they waste too much space on novelty ingredients. So, if you've already bought it, then it's definitely not a bad thing, but if you haven't, then get TestoFuel.

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