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Posted by Philippe A.

Testofuel, Reviews, Advice & Pitfalls, We reveal everything!

Updated on 20 November 2023.
Rating: 4.5/5. From 2 votes.
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boite TestofuelTestoFuel is the latest addition to the testosterone booster market and has quickly found itself at the top of most experienced bodybuilders’ lists.

Let’s take a look, in this review, at why and how this product has managed to differentiate itself from the competition so quickly…

But first, as usual, let’s discover the company that produces TestoFuel, to better understand their vision and reliability.

What is TestoFuel? Who is it for?

In reality, TestoFuel is a 100% natural dietary supplement designed to boost testosterone levels, a hormone generally produced by the testicles. The product is available in red capsules. The box contains exactly 120 capsules.

Since testosterone is an essential element in the muscle-growth process, TestoFuel is primarily intended for athletes who want to optimize the size and vigor of their muscles. It’s a great ally for fans of bodybuilding.

This dietary supplement is also suitable for men with low testosterone levels. This problem manifests itself in symptoms such as low libido, erectile dysfunction, fatigue and reduced sexual performance.

Roar Ambition: the creators of TestoFuel

TestofuelTestoFuel’s parent company is Roar Ambition LTD. They have a beautiful site with a nice, professional design. It may not be much, but it proves that the company takes care of its image, and for me, that’s a plus!

You can see on their site that their products are all clinically proven but also 100% natural, produced in England and the USA only. Good news for us French-speaking users: they also comply with GMP standards for good manufacturing practice.

All this is very reassuring, especially as the competition doesn’t often have this information available.

Having standards, a certain respect for manufacturing procedures and well-established production are positive and reassuring information for any consumer.

Roar Ambition doesn’t rest on its laurels either, as their products evolve over the years and are constantly improved to offer their customers the very best. Another plus point, since some boosters (without naming names) keep their obsolete formula for decades!

In conclusion, Roar Ambition offers two products: TestoFuel (testosterone booster), which we’re interested in here, and Instant Knockout (fat burner) with its very special fist-shaped packaging.

But what, in the eyes of most consumers, makes TestoFuel superior to other products on the market?

The answer to that question is given below…

How TestoFuel works

TestoFuel is not a testosterone-based dietary supplement. In fact, it contains active ingredients with the power to help the body release this hormone and stimulate its production. What’s more, it contains other nutrients useful for the body’s overall functioning.

As a result, testosterone levels will rise, enabling users to build muscle mass in a healthy and rapid way, and eliminate the problems that hamper their sex life. TestoFuel is a safe alternative to synthetic testosterone steroids.

TestoFuel ingredients

Let’s start with the ingredients of this must-have.

Formule du Testofuel

1. D-Aspartic acid:

D-aspartic acid is an amino acid that regulates testosterone synthesis in men. Several studies have demonstrated that this amino acid can increase testosterone levels.

One study in particular caught our attention…

“The aim of this study was to evaluate the role and molecular mechanism of d-aspartic acid in the release and synthesis of luteinizing hormone and testosterone in humans and rats.

The study involved a population divided into two groups: a first group of 23 individuals received a daily dose of d-aspartic acid for 12 days, and a second group of 20 were given a placebo. In parallel, the same experiment was conducted on 10 rats with a placebo group as control.

Results were observed from the accumulation of luteinizing hormone and testosterone in the blood, and the accumulation of d-aspartic acid in tissues.

The researchers noted that sodium d-aspartate induced an improvement in luteinizing hormone and testosterone release in both humans and rats.

In conclusion, these researchers suggest that d-aspartic acid is a physiological amino acid occurring primarily in the pituitary gland and testes that has a role in regulating the release and synthesis of luteinizing hormone and testosterone in both humans and rats.
(Source: NCBI. US National Library of Medicine. BioMed Central Ltd. Reprod Biol Endocrinol. 2009;7:120. Published online 2009 Oct 27. doi: 10.1186/1477-7827-7-120. Enza Topo, Andrea Soricelli, Antimo D’Aniello, Salvator Ronsini and Gemma D’Aniello..).”

D-aspartic acid is a flagship ingredient for boosting testosterone levels and is widely represented in the TestoFuel formulation.

2. Vitamin D3 :

Here again, several studies have demonstrated that vitamin D can increase testosterone levels in men.

What’s more, vitamin D not only increases testosterone levels, but also reduces the proportion of fat, while increasing the proportion of lean muscle.

3. Oyster extract:

Did you know that oysters contain 10 times more Zinc than a piece of steak?

Zinc is an element that helps transform proteins into muscles in the human body.

Oysters also contain traces of 59 elements essential to the human body, including vitamins, amino acids, taurine, omega 3 & 6!

4. Ginseng

Ginseng has been used for centuries in traditional Chinese medicine as a remedy for various ailments. This medicinal plant is also renowned for its powerful tonic effect and its ability to stimulate the production of sex hormones with the power to boost cell growth and increase testosterone levels.

This plant is also effective in promoting adrenalin secretion and boosting levels of adrenocorticotropic hormone. As it happens, low levels of these two hormones lead to a drop in testosterone levels.

5. Fenugreek

This spice used in curry is well known for its therapeutic virtues. A study conducted by Australian researchers at the University of Queensland and Applied Science and Nutrition (ASN) revealed that supplementing with fenugreek could stimulate desire and maintain testosterone levels at an appropriate level. In fact, this plant owes its power to its bioactive components called saponins.

6. Magnesium

Magnesium is an essential nutrient for the human body. It is involved in lipid, protein and carbohydrate metabolism. It can also prevent some of the negative effects of calcium, such as nerve over-activation, which can lead to muscle fatigue, cramps, tension and spasms.

Added to all this, magnesium contributes to the functioning of over 300 different enzymes and participates in various biological processes such as muscle relaxation. To top it all off, a study published in the Journal of Pharmaceutical and Biomedical Analysis revealed that when blood magnesium levels are high, so are testosterone levels.

7. Vitamin K2

Easily assimilated by the body, vitamin K2 enables TestoFuel to maintain testosterone levels in the plasma and testicles. It is also effective in reducing the risk of calcification of the arteries.

8. Zinc

Zinc has been proven to be an essential nutrient capable of boosting testosterone production. What’s more, its benefits for the body are numerous.

9. Boron

Boron is an element found in many varieties of green vegetables. According to scientific research, it is a natural testosterone booster. That’s why it’s one of TestoFuel’s key ingredients.

10. Maca

The therapeutic benefits of Maca have been known for thousands of years, and this sacred plant was once used by Inca warriors. Recent research has revealed that a good dose of maca before and after exercise is beneficial for athletes. It optimizes endurance.

What’s more, maca optimizes the release of feel-good hormones. It also promotes relaxation and improves sleep quality. All of which can help boost testosterone levels.

Contraindications and side effects of TestoFuel

Made with natural, scientifically-proven ingredients, TestoFuel capsules do not cause any notable side effects. It’s a safe product that poses no health risk.

The only risk in taking this dietary supplement is undesirable effects linked to allergy or hypersensitivity to one of its components. If you have any problems, consult your doctor.

TestoFuel is not a product for pregnant or breast-feeding women, children under 18, or people with liver deficiencies. If you are taking a particular medical treatment, always inform your doctor and ask for his advice before taking this product.

Cost and dosage of TestoFuel

TestoFuel is sold in boxes of 120 capsules, with a recommended dosage of 4 capsules per day.
One box is sufficient for 1 month’s use.

The price of this product is 55€ per box, or €1.83/day.

However, there is a special offer 3+1 free box “This brings the price down to just 1.37€/day.
Testofuel Test

TestoFuel user reviews

As mentioned above, TestoFuel quickly shot to the top of the charts, and most users are delighted with the product, which boosts energy, muscle mass and libido.

In fact, it very often ranks as the number 1 choice on various English-language test and review sites, confirming its reputation.

Of course, as with all bodybuilding products, there are also many dissatisfied users.

They complain that it is less effective than they had imagined. The answer to this problem often lies in the user’s diet and training: ANY bodybuilding product is only truly effective if coupled with the right diet and exercise.



+ 100% natural.

+ Promotes muscle mass gain.

+ Increases energy and libido.

+ Probably the best of all testosterone boosters.


– Only available via official website.


If you’re struggling to build muscle mass and are looking for that extra “boost”, TestoFuel could be the solution you’ve been dreaming of.

Here, we’ve been impressed by the effectiveness of this natural product, whose strength lies in its precise dosage of natural ingredients to boost testosterone levels in men.

Combined with a healthy diet and a serious training program, this product should help you maximize your testosterone levels and thus more quickly build more lean muscle mass, have more energy and more libido (testosterone being the male hormone par excellence).

Accédez au produit

Please note: TestoFuel is only on sale on its official website. If you find it elsewhere, beware of the risk of fraud and counterfeiting!

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