TestoFuel Review 2024 | Side Effects, Efficacy & WARNINGS

If you are struggling with low testosterone or muscle loss, testosterone boosters are likely to be on the list of potential solutions you are looking at. The testosterone supplement industry is a vast market with thousands of products so it can be difficult to choose.

Many people will by default go for the prominent brands such as TestoFuel. But how effective is TestoFuel and is it the right testosterone booster for you? We have done the important leg work and evaluated the product across the most important factors. Read on to discover what we established. 


Overall Rating: 4.7/5

  • Helps increase energy and muscle mass
  • Excellent for weight loss 
  • Improves mood and boosts confidence

What is TestoFuel?

TestoFuel is a testosterone supplement formulated from widely used and clinically proven natural ingredients. Whereas it can be used by persons of all ages and sexes, it is primarily designed for the middle aged and older men looking to reclaim the strength and vitality of their youth. 

TestoFuel powers muscle growth, speeds up weight loss (including notoriously stubborn belly fat), improves recovery from injury, lifts self-confidence, enhances mood and fires up motivation. 

TestoFuel is manufactured by Roar Ambition. Other products from the UK-based sports nutrition company include Prime Male, Hourglass Fit and Hunter Test.  

My Video Review of TestoFuel

How Does TestoFuel Work?

TestoFuel's primary path of action is the stimulation of testosterone production and protein synthesis. It also regulates insulin and glucose, two compounds that are central to weight control.


Lean Muscle Growth

Muscle bulk is not always synonymous with lean muscle. Yet, if you engage in weight lifting, you want more than just large muscles. You would rather have an increase in muscle tissue accompanied by a reduction in fat and water.

TestoFuel contains D-aspartic acid (D-AA). In one study where 23 men were given D-AA and a separate group of 20 provided with a placebo, the D-AA group saw a significant rise in testosterone within 12 days. 

Fat Reduction

TestoFuel’s fat reducing capability is a key reason for its delivery of lean muscle growth. If you are not shedding fat fast enough, it’s going to be a harder climb to the body you are looking for. 

TestoFuel does not just stimulate fat loss but addresses stubborn belly fat. It also regulates glucose and insulin which plays a key role in speeding up and sustaining fat loss.


It all starts in the mind. This life mantra applies to the correction of low testosterone problems as well. Your mind has to be in the right place before your body aligns. What you think determines what you do. A positive mood and can-do attitude is essential to consistently following a good diet and rigorous exercise regimen

TestoFuel improves self-confidence, mood and drive. Importantly, it does so without depending on stimulants like caffeine. Stimulants may trigger energy highs but they are notorious for crashes. Instead, it taps into the confidence-enhancing capabilities of panax ginseng, fenugreek, maca and vitamin D3. For example, a review of 25 trials spanning more than 7,000 subjects found that vitamin D supplementation inhibited negative emotions.  

Ingredients (and quantity per daily serving)

D-aspartic acid or D-AA (2,000 mg)

Viewed as an ‘anchor ingredient’ that’s widely used in testosterone supplements, studies have shown regular use can significantly lift levels of free testosterone. It speeds up fat loss and muscle growth too.

Panax ginseng (100 mg)

A herbal plant that’s also known as Korean red ginseng or Asian ginseng, it has been proven to support testosterone production, improve libido and regulate dopamine.

Fenugreek (50 mg)

A versatile herb that boosts metabolism, testosterone production, physical strength, weight loss, fertility, energy levels and self-belief.

Maca (180 mg) 

A herb whose root has compounds in its root that improve stamina, workout endurance, libido, mood and sleep quality.

Oyster (100 mg)

Recognized as an aphrodisiac in alternative medicine for centuries, oyster is exceptionally zinc-rich. It enhances free testosterone, libido and overall sexual health.

Magnesium (70 mg)

A vital nutrient, magnesium improves metabolism, testosterone production, muscle function, physical strength, stamina, injury recovery and the quality of sleep.

Boron (8 mg)

A mineral that increases free testosterone by suppressing estrogen production, boron also improves the efficacy of vitamin D.

Zinc (10 mg)

 A mineral that is so important to sexual health that even a seemingly small deficiency could trigger a fall in testosterone, sex drive and fertility. Zinc also supports protein synthesis, muscle growth, immunity and injury recovery.

Vitamin D3 (100 mcg)

 A vitamin that plays a key role in immunity, bone health, endurance, strength, brain function and testosterone production.

Vitamin K2 (18 mcg)

A vitamin that improves the absorption of the vitamin D3 ingredient in TestoFuel thus improving its efficacy.

When And How To Take TestoFuel?

Each bottle of TestoFuel contains 120 pills. You take four pills per day for 30 days. The pills should be spaced out throughout the day and are best accompanied by a snack or meal.

Pros & Cons


  • Increases muscle mass.
  • Speeds up fat loss including getting rid of stubborn belly fat.
  • Accelerates injury recovery.
  • Helps regulate insulin and blood sugar.
  • Manufactured in GMP-compliant facilities in the UK and US.


  • Four pills spaced out throughout the day increase the risk of forgetting to take a pill when it is due.

Are There Any Side Effects?

TestoFuel is made from clinically proven natural ingredients. Some such as fenugreek, panax ginseng and oyster have a history of use that goes back hundreds of years. TestoFuel’s ingredient blend has no known side effects when used as per the manufacturer-recommended dosage.

Still, each person has a unique biochemical mix and so you cannot completely rule out unpleasant effects for everyone. Talk to a healthcare professional before you start on TestoFuel. Do not use the product without a doctor’s consent if you have diabetes, prostate disease, cardiovascular illnesses or kidney problems. The same goes if you are on medication or under 18.

Stop using TestoFuel immediately if you notice an adverse reaction.

Cost, Shipping & Returns

You can buy TestoFuel on the official website. A bottle of TestoFuel contains 120 capsules that last for 30 days. You get price discounts on orders of at least three bottles.

There’s free shipping to all orders destined for the US and UK. For the rest of the world, free shipping is provided on orders of at least three bottles.

TestoFuel does not have a money back guarantee. You can however get a refund on any unopened and undamaged bottles returned within 30 days of your purchase for orders destined to the US. For orders destined for other countries, you have to return the bottles within 14 days from the date of purchase.

Customer Reviews

TestoFuel has the endorsement of bodybuilding legend Robby Robinson. For a supplement that improves muscle bulk, that’s pretty big. As always though, celebrity endorsement is rarely free so you need to hear the more neutral perspective of average buyers to truly establish its efficacy. 

Fortunately, customer reviews paint a mostly positive picture too. You get a testosterone boost, physical/mental energy lift and improvement in sleep quality. Some customers have however reported stomach upsets.

Key Features of TestoFuel Alternatives


Overall Rating: 5/5

  • Top rated testosterone booster
  • Boosts muscle growth and physical strength.
  • Reduces levels of the stress hormone cortisol.


Overall Rating: 4.7/5

  • Improves muscle growth.
  • Safe alternative to Sustanon, a harmful anabolic steroid
  • Speeds up weight loss.

Prime Male

Overall Rating: 4.5/5

  • Enhances bone density.
  • Speeds up weight loss including tummy fat.
  • Mitigates against negative effects of low testosterone such as high blood pressure, irregular blood sugar, cardiovascular illness, mood and depression.

Final Thoughts

While TestoFuel does have some drawbacks, it mostly checks all the right boxes in its primary role as a testosterone supplement. It’s important to note though that when you are experiencing persistently low testosterone, switching to a healthy lifestyle is vital. That means eating right, exercising regularly and getting sufficient sleep. So even as you consider testosterone supplements like TestoFuel, these are complementary to a healthy lifestyle and not a substitute. 

Want To Try TestoFuel?

Overall Rating: 
4.7/5 stars




Frequently Asked Questions (FAQs)

Is TestoFuel right for me?

TestoFuel’s ingredient mix is designed to work for the average person struggling with low testosterone. There’s a good chance it will work for you. That said, TestoFuel is not a standalone solution – it only works as well as the diet, exercise and sleep regimen it accompanies.

How soon can I expect to see results?

You should start to experience changes in a number of weeks though the manufacturer recommends you wait for two months to get the maximum benefits. 

Can I use TestoFuel with other supplements?

In theory, yes. However, it’s advisable that you not use more than one type of testosterone supplement at a go. It’s easier to know whether or not TestoFuel is working for you if you are not using it with a similar product simultaneously. Also, using multiple testosterone boosters together could see you exceed the FDA’s recommendation on daily values of ingredients which could cause nutrient toxicity.

Does TestoFuel contain stimulants?

TestoFuel does not contain any stimulants including caffeine.

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About the Author

Sam is a passionate health and fitness enthusiast who has been interested in supplements, fitness, and wellness for over 10 years. He is the founder of Great Green Wall - the health and wellness brand and has completed multiple fitness certificates, including personal training and nutrition certifications. Sam has been working as a personal trainer for the past three years and is dedicated to helping his clients achieve their fitness goals and lead healthier lifestyles. He believes that a healthy lifestyle is crucial to a happy and fulfilling life and is committed to sharing his knowledge and passion with others.

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