TestoFuel Review: Benefits, Ingredients, Side Effects and Results

TestoFuel bottle and box with logo on white background.


TestoFuel rating

My Results:

  • Ramped up free testosterone levels.
  • Experienced rapid muscle growth & recovery.
  • Saw increased energy, endurance & stamina.
  • Decreased body fat.
  • Boosted sexual drive & performance.

Buy 3 TestoFuel Get 1 FREE

A lot of men are looking to increase their testosterone levels to improve their energy, muscle building, and overall well-being. TestoFuel claims to do this by using natural ingredients that are thought to increase testosterone levels.

My detailed TestoFuel review will take close look at this supplement to determine if it is effective and what the scientific research says about the potential benefits, side effects, and customer reviews.

What is TestoFuel?

TestoFuel (TestoFuel.com) is manufactured by Roar Ambition, a British-based company that makes TestoFuel in facilities in the UK and the US.

Although TestoFuel claims to increase testosterone levels, the product itself does not contain testosterone. Rather, TestoFuel has ingredients that have potential to increase testosterone production, including fenugreek and DAA (D-aspartic acid).

Although this supplement is more broadly targeted at men, the company claims that women can use it as well. This is because women also produce testosterone through the adrenal glands and ovaries.


  • Effectively boosts testosterone levels
  • Contains natural ingredients
  • Formula backed by scientific research
  • No filler ingredients
  • 30-day money-back guarantee


  • A little more expensive than some brands
  • Not vegan/vegetarian friendly
  • Actual product needs further research
  • Refunds for unused product only

TestoFuel website screenshot


TestoFuel contains the following active ingredients:

  • Oyster extract
  • Zinc
  • Asian red panax ginseng
  • Fenugreek
  • Vitamin D3
  • Magnesium
  • Maca root
  • Vitamin K2
  • D-aspartic Acid
  • Boron

Here is a breakdown of each ingredient, with the corresponding research supporting their effectiveness.

Vitamin D3

We get vitamin D from sunlight exposure, food and dietary supplements. Vitamin D is crucial for building healthy bones, and it helps control infections, reduces inflammation, and can even reduce cancer cell growth.

However, vitamin D deficiency in men can affect their fertility or lead to osteoporosis and loss of muscle mass. A low concentration of vitamin D in the blood may also affect men’s testosterone production.

Therefore, you want to make sure your vitamin D is at optimal levels, because the less there is, the lower your testosterone levels will be. (1)

Vitamin K2

Vitamin K and vitamin D3 have a synergistic effect when combined which increases testosterone uptake in specific areas. These two vitamins also work together to encourage anabolic action in the body and to reduce inflammation.

Studies show that vitamin K deficiency can lead to lower testosterone levels in men. (2) Additionally, vitamin K supports health health by helping to maintain clear and healthy arteries. It’s also important for supporting bone health. (3)


Magnesium is a very important mineral in the body that plays a role in many cellular processes, bone structure, and muscle function. Some studies have shown that magnesium supplementation can increase testosterone levels in men. Research shows that magnesium increases total and free testosterone in men, especially for active individuals. (4)

Additionally, men are associated with magnesium deficiency more so than women, which is another reason why magnesium supplementation is important for maintaining overall health and fitness.


Zinc plays a crucial role in nutrient metabolism and overall health. Zinc improves the levels of LH (luteinizing hormone) in men’s body, which plays an important part in triggering testosterone production. TestoFuel has 10mg zinc per serving, which helps to keep optimal testosterone levels for peak performance. (5)

D-Aspartic Acid

D–aspartic acid (DAA) is an amino acid that’s involved in testosterone production, and promotes sperm health and GH levels. (6) Large amounts of DAA can be found in the testes and pituitary gland.

D–aspartic is known to boost testosterone levels, increase fertility, promote muscle growth, and enhance athletic performance. This makes DAA an important ingredient for optimal male health.

Maca Root

The maca plant is native to the Andes mountains of Peru, which is why it’s sometimes referred to as Peruvian ginseng. Maca is a cruci

ferous vegetable (like broccoli, cauliflower and kale) and has been used in traditional medicine for thousands of years.

Maca is a rich source of not only fiber, amino acids, vitamins, and minerals, but also contains other compounds, such as macamides, macaridine, alkaloids, and glucosinolates. These compounds are believed to be responsible for maca’s benefits. (7)

Anecdotal data points to a wide range of health benefits associated with maca, including improving memory and focus, shrinking prostate size, and promoting muscle growth. According to additional research, maca root can increase sex drive and enhance male fertility. (8, 9)

Asian Red Panax Ginseng

Ginseng has long been used in traditional Chinese medicine for numerous health benefits, including increased energy, libido, sexual function, and reproductive health, to name but a few. Ginseng contains a compound called ginsenosides, which support healthy testosterone levels. (10)

This herbal supplement has been heavily researched, and it benefits have been consistently demonstrated.

Oyster Extract

Oysters have long been used as a natural aphrodisiac and is considered a testosterone-boosting food. Oyster extract is believed to increase testosterone levels by impeding its conversion into estrogen.

Oysters are also rich in vitamins B12,D, and K2, as well as magnesium, zinc and selenium, which are all important for male health. (11)


Another ingredient that has been used in traditional medicine is fenugreek, a natural herbal remedy that has been used for hundred of years. It is known for its many benefits, including the ability to increase sex drive and sexual function.

However, it is also known for its ability to raise testosterone levels by inhibiting the effects of SHBG (sex hormone-binding globulin). When SHBG binds to testosterone, it effectively neutralizes it. Fenugreek deters this process, allowing more free testosterone to be available in the body. (12)


Boron is a natural element that can be found in mineral deposits in the earth all around the world. It’s also naturally found in many foods.

This substance has been proven to provide amazing benefits to health, especially as it relates to testosterone. According to scientific research, taking a 6-mg dose of boron for only one week offers the following benefits:

  • Increases sexual and reproductive function
  • Boosts free testosterone levels by nearly 25%
  • Decreases estradiol levels by nearly 50%
  • Reduces inflammation  by more than 50% (13)

Other research has confirmed these results, showing that daily boron supplementation for just week significantly increases free testosterone and lowers estradiol. (14)

TestoFuel ingredients and supplement facts


Side Effects

There is very little risk that you will experience adverse reactions to TestoFuel. Side effects associated with TestoFuel are rare because it contains safe and natural ingredients.

That said, if you have an allergy to shellfish you should avoid using this supplement. An allergic reaction to shellfish can result in possible side effects like swelling of the face, tongue, throat, or lips, difficulty breathing, hives, dizziness, nausea, vomiting and/or diarrhea.

Does TestoFuel Work?

TestoFuel does work, and it is effective. TestoFuel’s combination of ingredients allows for more testosterone to be released naturally by the body.

Scientific research on the active ingredients demonstrate that they all provide measurable testosterone increases, along other health benefits. In fact, we ranked TestoFuel as one of the best testosterone-boosting supplements, and it’s no wonder why so many guys are using it as part of their fitness regimen.


According the manufacturer, TestoFuel’s benefits include:

  • Boost in strength and muscle mass
  • Decreased body fat
  • Higher sex drive
  • Increased mood, confidence and motivation
  • Improved sleep quality

Third-party research of many ingredients do indicate the claimed health benefits. TestoFuel also features a large number of positive testimonials and user reviews, which you can view here.

Because the product is all-natural and encourages the body to produce more of its own testosterone, this supplements is a much safer alternative to TRT.

That said, the TestoFuel website doesn’t provide any research data that demonstrate the benefits and results from using the actual product itself. While the ingredients used in the formula are effective, I believe that having at least one independent study to verify the product’s effectiveness would only be a plus for the company.

Free Bodybuilding Guide

TestoFuel also created a free bodybuilding guide called “Your Guide to Bodybuilding Success”. It’s packed with all kinds of important information, from exercises and reps to diet and recovery.

Whether you’re an absolute beginner or an old pro, there’s something here for everybody – and it’s free to download.

Book cover for free bodybuilding guide

Download “Your Guide to Bodybuilding Success” Here – No Email Necessary


TestoFuel User Reviews

Customers using TestoFuel are generally happy with the supplement’s results. It’s been praised by a number of bodybuilders for giving them greater strength and exercise performance. Other users are happy because it combines all the natural ingredients that have been shown to significantly increase male testosterone levels into one supplement.

Even so, there will inevitably be some unfavorable reviews, as there are with all products. In these cases, the majority of the negative reviews are from people who complain about having stomach problems from taking the supplement, or that the results take too long to appear.

TestoFuel Results – Before and After

These are real photos of TestoFuel customer results before and after taking the supplement.

Before and after images of TestoFuel user.

I also felt my appetite grow while taking TestoFuel and you can see from my photos, it’s means MORE MUSCLE! I have recommended TestoFuel to my friends and I will definitely continue to use it. I can lift more then I ever imagined myself doing, and my body’s finally looking good. On top of all that, the confidence boost I get from TestoFuel is wonderful. Not only do I look better but also I feel better.

Results from using TestoFuel

I read the testimonials but was still unsure on whether it worked or not, will I be wasting my  time again. I thought I have nothing to lose so I ordered it and started a new fitness plan in line with it and was amazed with the results, my pictures show the difference over a period of 3 months, I have been ordering ever since and have not been disappointed.

Customer photos of before and after using TestoFuel

I’m currently on my fourth month of TestoFuel and I weigh 180lbs, 15lbs heavier than I was before taking TestoFuel. Keep in mind that I’m a “hard gainer” and gaining that amount in just 3 months in unheard of for me.

Customer-submitted images

I currently only use protein power after my work outs and TestoFuel. Nothing else, I recommend this to ANYONE who is serious about gaining lean muscle and giving your body that boost you may need.

User-submitted photos

My first month I gained about 6lbs of lean muscle. I wasn’t having any other supplements, protein and pre workout. I made big gains in my 4 months. I’m going to buy again for 4 months and I’ll be doing another review after the next 4 months.


Who is TestoFuel for?

TestoFuel can be used by adults who want to reduce body fat and increase muscle mass. The combination of ingredients used encourages and sustains ideal levels of free testosterone, resulting in numerous health benefits. Although everyone’s experience is unique, the majority of TestoFuel users do experience improvements.

While you should always consult your doctor before taking any supplements, people in the following categories are ideal candidates for this supplement:

  • Men in their 30s or older who are experiencing the signs of reduced testosterone levels associated with aging.
  • Individuals who engage in in bodybuilding or who want to increase muscle mass.
  • Men wanting to increase their energy and sex drive.
  • Those interested in improving overall health and fitness in conjunction with a diet and exercise plan.

Who Should Not Take TestoFuel?

TestoFuel may not be suitable for people who have shellfish allergies since it contains oyster extract. Women who are pregnant or nursing should not use TestoFuel.

This product is not intended for use by individuals under the age of 18. If you are currently taking medication or have an existing medical condition, talk to your doctor before taking this product.

How To Use TestoFuel

It’s recommended that you take one capsule four times per day with a meal or snack. Ideally, you would spread these doses equally throughout the day: at breakfast, lunch, dinner and bedtime.

Additionally, you’ll want to stay hydrated when taking TestoFuel. Drinking plenty of water throughout the day can improve the absorption of nutrients and help to stimulate natural testosterone production.

It’s also recommend to take TestoFuel daily for at least 2 months to experience the full benefits. You’ll start to experience some effects after only taking it for a few days, but it will take time to elevate your testosterone levels to maximum levels.

Where To Buy TestoFuel

To avoid buying counterfeit products which are often found on third-party marketplaces, the best place to purchase TestoFuel is through the official website. This way you know the product is legit, you get free shipping, and you have the assurance of a money-back guarantee.

Money-Back Guarantee

If TestoFuel does not provide the desired effects, the manufacturer will reimburse you. If you live in the US, you can return the product within 30 days of your purchase, and if you live outside the US, you have 14 days to return it.

Keep in mind that you can only return those packages that have not yet been opened. If you would like to return the product, just contact customer support via email.

TestoFuel website screenshot

TestoFuel FAQs

Below are the most common questions TestoFuel users ask.

Is TestoFuel Effective?

Yes, TestoFuel should deliver the benefits it claims to, based on the research into its ingredients. Men who want to increase their testosterone levels and build more lean muscle mass should definitely consider using this product.

It encourages optimal testosterone levels and builds lean muscle mass by acting as a natural testosterone enhancer. The formula uses components that have been shown to improve sex drive, increase immunity, and boost strength and endurance.

TestoFuel is a superior alternative compared to other testosterone supplements being marketed, a number of which  include stimulants or substances with no scientifically validated use. TestoFuel promotes the natural production of testosterone without the need of stimulants by utilizing herbs, amino acids, vitamins, and minerals.

How Long Does It Take For TestoFuel To Work?

The effects of TestoFuel do not happen right away. To get the full benefits, the manufacturer advises using TestoFuel every day for a minimum of two months, however you might start to feel some effects within a few days. Keep in mind that the effects aren’t permanent, and you risk losing these results if you stop using the product.

Is TestoFuel safe?

Since TestoFuel is a dietary supplement, the FDA has not evaluated it for safety or effectiveness. Nevertheless, it is produced at a GMP (Good Manufacturing Practices) certified facility in the United States.

TestoFuel is formulated with a blend of natural ingredients, including herbs, vitamins, and amino acids. Even so,  see your doctor or other healthcare professional before taking any supplement to ensure that it’s safe for you.

Does TestoFuel Have Side Effects?

Due to its all-natural composition, taking TestoFuel has almost no side effects. Despite this, there is a chance you may observe certain side effects if you are allergic to any of the ingredients found in TestoFuel.

How Long Do TestoFuel’s Results Last?

How consistently you take the supplement will determine the results you get. Your testosterone levels will become more optimized over time as you continue to use it.

However, these levels will revert to what they were before using the supplement if you stop taking it. To raise your testosterone to its ideal levels, you should take this supplement regularly.

Does TestoFuel Help You Gain Muscle?

The ingredients used in the TestoFuel formula, like D-aspartic acid, fenugreek, magnesium, and vitamin D3, have been shown to potentially increase testosterone and promote muscle growth. Nevertheless, this supplement should be taken as part of a balanced diet and exercise plan.

Nevertheless, this supplement should be taken as part of a balanced diet and exercise plan.  Without strength training or resistance exercise, and proper nutrition, using the supplement alone is probably not going to help you gain a significant amount of muscle.

Is TestoFuel A Good Choice?

For helping to restore men’s testosterone levels, TestoFuel is a powerful and effective supplement. TestoFuel is a reliable and safe treatment for men who are experiencing the effects of low testosterone.

The formula’s ingredients have a number of scientifically verified health benefits, in addition to raising testosterone levels. Keep in mind, however, that e ach individual’s physiology is unique, and each person responds to substances differently.

Although we can’t know every individual’s experience, TestoFuel has been effective for the vast majority of users. It’s for this reason than an increasing number of  men all over the world are using the supplement.

for these reasons, we consider TestoFuel to be an excellent choice if you’re searching for a safe yet powerful treatment for your diminishing testosterone levels.

See Also: Our Full List of Recommended Testosterone Boosters

TestoFuel order page

  1. https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0030-1269854
  2. https://www.sciencedirect.com/science/article/abs/pii/S0304416506001590?via%3Dihub
  3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4566462/
  4. https://pubmed.ncbi.nlm.nih.gov/20352370/
  5. https://www.sciencedirect.com/science/article/abs/pii/S089990079680058X?via%3Dihub
  6. https://rbej.biomedcentral.com/articles/10.1186/1477-7827-7-120
  7. https://pubs.rsc.org/en/content/articlelanding/2020/FO/C9FO02732G
  8. https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/1472-6882-10-44
  9. https://pubmed.ncbi.nlm.nih.gov/11753476/
  10. https://www.tandfonline.com/doi/full/10.4161/spmg.26391
  11. https://www.researchgate.net/publication/350740083_Nutraceutical_potential_of_Oyster
  12. https://wjmh.org/DOIx.php?id=10.5534/wjmh.170004
  13. https://pubmed.ncbi.nlm.nih.gov/26770156/
  14. https://www.sciencedirect.com/science/article/abs/pii/S0946672X10001148?via%3Dihub

Rating Details

Please follow and like us:



Muscle Growth


Increases Strength and Power


Decreases Body Fat


Boosts Sex Drive


Improves Mood & Motivation



  • Accelerated muscle growth and strength gains.
  • Decreased body fat percentage.
  • Improved mood and motivation.
  • Enhanced confidence and self-esteem.
  • Increased metabolism and energy.


  • Not suitable for Vegetarians/Vegans, or those with shellfish allergies.
  • Not as potent as actual testosterone injections.
  • Not for individuals under the age of 18.
  • You'll need to take it for at least 2 months to see the full benefits.

Leave a Comment