Written by Steve Theunissen | ISSA: CPT & Fitness Nutrition
Fact checked by Robert Iafelice, MS, RD, LDN
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Testosterone-boosting compounds are by far the most popular muscle-enhancing supplements on the market. Many guys take them to try and mimic the effects of taking anabolic steroids. While they won't do that, a high-quality testosterone booster will stimulate your body's natural testosterone production to boost protein synthesis, strength, and muscle-building potential.
One of the most popular testosterone boosters over the past few years has been TestoFuel from Roar Ambition. Many users swear by TestoFuel's ability to increase their strength, hypertrophy, and energy levels while others write it off as nothing more than an expensive placebo. So, we decided to do an in-depth TestoFuel review in order to get to the truth.
Read on to discover whether TestoFuel is the real deal.
TestoFuel is considered to be a revolutionary, exhaustively researched muscle building supplement with one very focused aim...to smash down the barriers to growth by opening your testosterone floodgates...
**There may be affiliate links in this post where we might receive a small commission on purchases you make. We only recommend products we think you will find valuable.**
What is TestoFuel?
TestoFuel is a testosterone-boosting supplement manufactured by a company called Roar Ambition. Unlike anabolic steroids, it does not contain synthetic testosterone. Instead, it combines 10 natural ingredients to boost testosterone levels.
TestoFuel comes in capsule form, with each container holding 120 capsules. At a daily dosage of four capsules, that is enough for a 30-day supply.
TestoFuel Review: Pass or Fail?
TestoFuel claims to be able to do the following things:
- Increase muscle growth potential
- Boost testosterone levels
- Enhance strength
- Reduce body fat
- Improve mood
- Boost self-esteem
Each of these effects is supported by research on the ingredients that make up this product (we will discuss these in the next section). The dosages on the ingredients are in line with the clinical dosages used, which is really good to see.
The makers of Roar Ambition make it clear that you will not get the claimed results just by taking their product. You also need to be training intensely and following a healthy diet that is in line with your goals. If you are doing those things, the compounds contained in TestoFuel will give you an extra 5-10% in terms of strength and muscle-building potential.
We've tested TestoFuel and found that by sticking to a strict diet and training regimen that our major lifts were boosted by 10 pounds after a month of taking the product. That said, we think you might want to give TestoFuel a try if you've hit some plateaus in the gym or don't have the motivation to train as hard as you used to.
Overall Verdict: PASS
Pros
- 10 research-backed ingredients
- 90-day money-back guarantee
- Transparent dosage labeling
Cons
- Not vegan friendly
- Quite expensive
TestoFuel is considered to be a revolutionary, exhaustively researched muscle building supplement with one very focused aim...to smash down the barriers to growth by opening your testosterone floodgates...
10 TestoFuel Ingredients
TestoFuel contains ten ingredients, each of which has some research backing to support its ability to boost testosterone levels or increase energy. Unlike many competing products, TestoFuel does a good job of providing transparency about their ingredient dosages, which we have listed alongside each ingredient.
1. Vitamin D3 - 4000IU
Over a thousand biological processes are controlled by vitamin D. It can be acquired by being in the sun and is found naturally in fish and eggs. In addition to being a powerful "T" booster, vitamin D supplementation is known for strengthening bones.
According to a recent study, testosterone levels were 25.2% higher in males who took 3332 IUs of vitamin D daily for a year than in those who received a placebo.1
The combination of vitamins B6, D, and K2 increases testosterone receptor activity and enhances zinc and magnesium absorption.
2. Vitamin K2 - 18mcg
Vitamin K2 has been shown to improve testosterone supply and to be excellent for cardiovascular health.
Male rats in a Japanese study were given 75 mg/kg of K2 daily for five weeks. Blood plasma testosterone levels had increased by 70% by the trial's end, according to the researchers. Even more of an increase (90%) was seen inside the testes.2
3. Magnesium - 70mg
More than 300 bodily processes are regulated by magnesium. The majority of the body's enzymes need it as their main electrolyte. It keeps fluid balance, fuels cells, and boosts the level of bioactive, or free, testosterone.
Your serum testosterone levels will drop if you have a magnesium shortage.
Magnesium is a testosterone enhancer that is underutilized but incredibly powerful. Magnesium can unbind bound testosterone to increase its bioavailability, according to a recent in-vitro study. Magnesium blocks SHBG, a chemical that binds to free testosterone, which is why this occurs. This increases the "T's" accessibility to receptors.3
4. Zinc - 10mg
The body is unable to manufacture the necessary mineral zinc. It cannot store zinc either.
Zinc plays a significant role in the reproductive system while also boosting the luteinizing hormone that triggers the body to produce testosterone . It can prevent the aromatase enzyme from working, which makes it a testosterone booster as well.
Numerous studies have demonstrated that taking zinc supplements considerably raises the levels of bioactive (free) testosterone.4
5. D-Aspartic Acid - 2000mg
The non-essential amino acid D-aspartic acid works to increase serum testosterone levels in three different ways:
- It stimulates the creation of testosterone in the testes
- It facilitates more testosterone release from the pituitary gland
- This amino acid is a crucial link in the process of turning cholesterol into testosterone5
6. Maca Root Extract - 180mg
Maca root extract was once a mystical herb valued by Inca soldiers as a means of boosting their strength and energy levels when going into battle.
Recent research suggests that can boost exercise stamina and endurance, making it a good pre-workout ingredient.
Additionally, studies on maca have shown that it can raise happiness and mood. Increasing your level of relaxation will significantly enhance your sleep, which can have a significant favorable impact on testosterone levels.
Other research has established the effectiveness of maca as a natural libido enhancer.6 You can dig into this more in our article: Does Maca Increase Testosterone?
7. Asian Red Panax Ginseng Extract - 100mg
The body's capacity to deal with physical, environmental, and emotional stress is significantly increased by the potent adaptogen ginseng. Its capacity to stimulate slow metabolisms and increase energy levels makes it an efficient weight-loss treatment.
Ginseng is a strong prolactin inhibitor, according to several investigations done on rats. In one study, American ginseng treatment resulted in a startling 50% drop in serum prolactin levels in the treated rats.7
Ginseng has also been shown to significantly increase nitric oxide production in the body (NO). This directly results in an improvement in the capacity to achieve and sustain an erection.
According to studies, Siberian ginseng can also raise the levels of two other essential hormones that are necessary for the release of testosterone:
- Adrenocorticotropic Hormone (ACTH)
- Adrenaline
8. Oyster Extract - 100mg
Oyster extract is well known as an aphrodisiac. It is rich in important fatty acids, vitamins, minerals, and amino acids. Numerous studies have demonstrated that oyster extract can help in the production of testosterone. The zinc level in oyster extract is an important characteristic. You'll receive 10 times more zinc, another known testosterone booster, than you would from a beef steak.8
9. Fenugreek Seed Extract - 50mg
Natural testosterone booster fenugreek (Trigonells foenum-graecum) contains two active ingredients that boost testosterone; Protodioscin and fenusides.
The herb fenugreek is also recognized as a libido stimulant and a testosterone booster.9
10. Boron - 8mg
The natural element boron is essential to human life. Many different kinds of green vegetables contain it. Recent scientific research indicates that boron plays a significant part in assisting your body in producing testosterone.
In a 2015 study, it was discovered that supplementing with 8mg of boron daily helped to raise free testosterone levels by almost 25%.10
Benefits of TestoFuel:
The following health benefits of Testofuel are all directly related to the product's ability to boost testosterone production. Testosterone supplements presuppose that you are training hard in the gym and following a sensible diet.
1. Increase Strength
When you increase your body's ability to produce testosterone, you have more strength potential. Studies have found that increased testosterone levels boost strength independent of muscle mass increase.
2. Increase Muscle Mass
The hormone testosterone is known as an androgen. As such it is involved in body maturation and sexual development, including the growth of sex organs, body hair, voice deepening, and other things. Anabolic effects of testosterone include the development of muscular mass, enhanced bone density, and other bodily growth.
The testosterone-boosting effects of TestoFuel mean that you will increase your ability to add muscle tissue to your body when you combine this supplement with intense training and weight-gain diet.
3. Reduce Body Fat
The main ability of TestoFuel to reduce fat comes as a byproduct of muscle mass increase. When you add muscle to your frame, your metabolism increases. That is because muscle tissue requires more energy to sustain itself.
4. Increase Libido and Sperm Count
Sexual excitement and activity causes a natural increase in testosterone levels. Male sexual activity is typically higher in men with higher testosterone levels.
Studies confirm the benefits of testosterone therapy for sexual performance and male reproductive function. Additionally, it demonstrates that testosterone must reach a certain level before there is no longer an increase in reaction.
Increasing your testosterone levels can improve your sperm count. However, excessive amounts of testosterone will have the opposite effect. To achieve testosterone levels high enough to decrease sperm count, though, you would have to use anabolic steroids or testosterone injections.
5. Increase Energy Levels
The creation of red blood cells, or erythropoiesis, is a process that heavily depends on testosterone. Our level of energy is severely impacted by low red blood cell production. Increasing testosterone level by supplementing with TestoFuel may increase erythropoiesis and restore your red blood cells to their normal levels. This will significantly boost your energy level.
6. Increase Bone Health
Bone mineral density is significantly influenced by testosterone. Men's bone density declines as they age and their testosterone levels fall. This increases the chance of osteoporosis and brittle bones. Athletic performance can be improved by having strong bones that support your muscles and internal organs.
Increases in the density of the spine and the hips have been shown in clinical studies on the impact of testosterone on bone density. However, it's not known if testosterone can lower the chance of fracture.
TestoFuel Side Effects
TestoFuel does not carry any major side effects. All of the ingredients in TestoFuel are completely natural. Although there are negative consequences of taking too much testosterone, the increases you will experience from a natural product like TestoFuel will not get to those levels.
Unlike steroids and prohormones, TestoFuel will not inhibit your body's natural production of testosterone. as a result, you do not need to cycle your use of this supplement. Nor do you need to undergo post-cycle therapy.
Some people may experience such minor side effects as bloating, gas, diarrhea, or constipation when they first take TestoFuel. This usually goes away after a couple of weeks.
Real Customer TestoFuel Reviews:
There is a lot of discussion online about TestoFuel. The majority of verified user reviews are positive, being about 80% of all reviews. Here are a couple of representative comments ...
3 TestoFuel Alternatives:
The testosterone-boosting market is extremely competitive. While TestoFuel is a market leader, it has some stiff competition. Here are three popular competing products.
1. Prime Male
With a dozen ingredients, Prime Male contains more compounds than any other product on this page. They include many of the most research attested testosterone boosting herbal ingredients that we know of, such as d-aspartic acid, magnesium, and luteolin.
Here is a complete list of the ingredients in Prime Male:
- Magnesium
- Luteolin
- Ashwagandha extract
- Nettle root extract
- Vitamin D3
- Vitamin B6
- Vitamin K2
- Zinc
- D-aspartic acid calcium chelate
- Black pepper
- Borton
- Korean red ginseng
Prime Male can be purchased both from Amazon and on the official website. Here is a cost breakdown ...
- One month’s supply costs $69
- Two month’s supply costs $137
- Four month’s supply costs $207
Pros
- A dozen research-supported ingredients
- Well dosed
- Transparent labeling
Cons
- Need to take four capsules per day
- Expensive
Prime Male is a breakthrough testosterone booster — the only one to contain a combination of 12 critical nutrients vital to you becoming the hard-driving, healthy, fit, energetic man...
Learn more by visiting our full Prime Male Review.
2. TestoPrime
TestoPrime is a test booster that claims to have the ability to increase the body's testosterone production while lowering cortisol levels and dilating blood vessels. There are 11 ingredients in this product, all of which have some research to back their inclusion.
The manufacturers of TestoPrime claim that it will, in conjunction with weight training and a weight gain diet, increase muscle mass, boost sex drive, sustain erections, improve energy, and enhance stamina.
TestoPrime contains the following 11 key ingredients:
- D-Aspartic Acid
- Panax Ginseng
- Ashwagandha Extract
- Fenugreek
- Green Tea Catechins
- Pomegranate Extract
- Vitamin D
- Zinc
- Vitamin B6
- Garlic Extract
- Black Pepper Extract with Piperine
TestoPrime can only be purchased from the official website. A one-month supply is $59.99. If you buy two bottles for $119.99, you will get an extra bottle for free.
Pros
- Well dosed
- 11 research-backed ingredients
- Reduces cortisol
- Reasonably priced
Cons
- Requires taking four capsules per day
- Only available from the official website
TestoPrime is an all-natural testosterone support that can help any man take control of his youthful vitality with a flood of new and natural testosterone...
Check out our in-depth TestoPrime Review.
3. CrazyBulk TestoMax
Crazy Bulk TestoMax is another 11-ingredient natural herb-based testosterone booster. here's what's contained in this product:
- Vitamin D 3
- Vitamin K1
- Vitamin B6
- Magnesium
- Zinc
- D-Aspartic Acid
- Nettle Leaf Extract
- Panax Ginseng
- Fenugreek Extract
- Boron
- Bioperine
Crazy Bulk has a stable of nine muscle-building products, each one designed to mimic the effects of an anabolic steroid. TestoMax is one of their biggest selling supplements. It has received a lot of positive reviews and has an average rating of 4.3 stars on TestPilot.
TestoMax can only be bought from the Crazy Bulk website. A one-month supply costs $64.99.
Pros
- 11 research-backed ingredients
- Free delivery worldwide
- Bulk purchase discounts
Cons
- Some reviewers mention stomach aches
- Not suitable for vegans
CrazyBulk’s Testo-Max formula was created based on research led by some of Europe’s top scientists and experts in male nutrition. Crafted with a specific set of 11 high-grade...
TestoFuel FAQs
Is TestoFuel any good?
Yes, TestoFuel is an effective natural testosterone booster. It includes ingredients that have been clinically shown to naturally increase testosterone levels and are generally well-dosed. there are many verified user reviews from people who confirm that TestoFuel was able to help them build muscle mass, increase strength levels and improve their libido.
It should be noted that TestoFuel will have a very minimal effect unless it is accompanied by regular resistance training and a healthy diet.
How to take TestoFuel?
Roar Ambition recommends taking four capsules of TestoFuel per day. You should spread this out to four servings of one capsule spread over the course of the day.
When to take TestoFuel?
You should take TestoFuel four times per day, spread apart by several hours. It should be taken with water and with or without food.
Who should take TestoFuel?
TestoFuel should be taken by men who are beyond puberty and who want to increase their muscle mass or strength levels. Males who are experiencing libido issues and problems with erectile dysfunction may also benefit from taking TestoFuel as it can help maintain optimal testosterone levels.
Where to buy TestoFuel?
TestoFuel can be bought from Amazon and from the official manufacturer's website.
How quickly does TestoFuel work?
The ingredients in TestoFuel need to build up in the body to take effect. this may take a couple of weeks. Most people, accordingly, begin to notice strength and muscle mass increase after two to three weeks. Energy and libido improvements may be noticed sooner.
Will TestoFuel help me lose weight?
TestoFuel will probably not help you to lose weight, but it may help you to lose body fat. that is an important distinction. That is because the increase in testosterone that you get from taking TestoFuel, when accompanied by weight training and a high-protein diet, can lead to an increase in muscle mass. this will increase your weight. at the same time, the extra muscle will speed up your metabolism, making it easier to burn off fat. The next result may be that you gain muscle and lose fat at the same time. Your scale weight will go up but you will look a lot better in the mirror!
Does TestoFuel actually work?
Yes, TestoFuel does actually work, so long as you take it consistently and are also working out intensely and eating a high-protein diet. Remember, though, that TestoFuel is a supplement so it will only add to your results by 5-10%. So, you should not expect the dramatic sort of results that most testosterone boosters imply in their advertising.
What are the dangers of testosterone boosters?
Excessive amounts of testosterone coursing through the body can lead to some serious problems. These include:
- Higher blood pressure
- Sleep apnea Edema
- Enlarged male breasts
- Infertility
- Acne
- Testicular enlargement
It is very unlikely that you will boost your testosterone levels to the degree that these problems will occur from taking a testosterone booster. As a result, these compounds are generally considered to be safe.
Minor side effects such as stomach upset, bloating and gas may be experienced over the first couple of weeks of taking a testosterone booster.
TestoFuel is considered to be a revolutionary, exhaustively researched muscle building supplement with one very focused aim...to smash down the barriers to growth by opening your testosterone floodgates...
Summary
Testosterone boosters are extremely popular among gymgoers due to their ability to help build muscle and strength. Amidst a saturated market, TestoFuel stands out for its quality ingredients, research-backed dosages, and general effectiveness.
After having studied this product meticulously in their TestoFuel review, we conclude that this is a worthwhile product that can support your body's natural testosterone production. Take it in conjunction with intense workouts and a high-protein diet to build muscle and you will start to see some solid anabolic results for your efforts.
Check out the best price on TestoFuel.
Looking for more test booster options? Check out our post that covers the BestTestosterone Boosters on the market.
Research
- Pilz S, Frisch S, Koertke H, Kuhn J, Dreier J, Obermayer-Pietsch B, Wehr E, Zittermann A. Effect of vitamin D supplementation on testosterone levels in men. Horm Metab Res. 2011 Mar;43(3):223-5. doi: 10.1055/s-0030-1269854. Epub 2010 Dec 10. PMID: 21154195.
- Ito, Asagi, et al. “Menaquinone-4 Enhances Testosterone Production in Rats and Testis-Derived Tumor Cells.” Lipids in Health and Disease, vol. 10, no. 1, 13 Sept. 2011, 10.1186/1476-511x-10-158. Accessed 27 Oct. 2021.
- Excoffon, L., et al. “Magnesium Effect on Testosterone–SHBG Association Studied by a Novel Molecular Chromatography Approach.” Journal of Pharmaceutical and Biomedical Analysis, vol. 49, no. 2, Feb. 2009, pp. 175–180, 10.1016/j.jpba.2008.10.041.
- Kilic M, Baltaci AK, Gunay M, Gökbel H, Okudan N, Cicioglu I. The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc. Neuro Endocrinol Lett. 2006 Feb-Apr;27(1-2):247-52. PMID: 16648789.
- Melville GW, Siegler JC, Marshall PW. Three and six grams supplementation of d-aspartic acid in resistance trained men. J Int Soc Sports Nutr. 2015 Apr 1;12:15. doi: 10.1186/s12970-015-0078-7. PMID: 25844073; PMCID: PMC4384294.
- Stone, M., Ibarra, A., Roller, M., Zangara, A., & Stevenson, E. (2009). A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen. Journal of ethnopharmacology, 126(3), 574-576.
- HONG, BUMSIK, et al. “A Double-Blind Crossover Study Evaluating the Efficacy of Korean Red Ginseng in Patients with Erectile Dysfunction: A Preliminary Report.” Journal of Urology, vol. 168, no. 5, Nov. 2002, pp. 2070–2073, 10.1016/s0022-5347(05)64298-x. Accessed 13 Feb. 2022.
- Matsuda Y, Watanabe T. Effects of oyster extract on the reproductive function of zinc-deficient mice: bioavailability of zinc contained in oyster extract. Congenit Anom (Kyoto). 2003 Dec;43(4):271-9. PMID: 15041778.
- Rao A, Steels E, Inder WJ, Abraham S, Vitetta L. Testofen, a specialized Trigonella foenum-graecum seed extract reduces age-related symptoms of androgen decrease, increases testosterone levels and improves sexual function in healthy aging males in a double-blind randomised clinical study. Aging Male. 2016 Jun;19(2):134-42. doi: 10.3109/13685538.2015.1135323. Epub 2016 Jan 20. PMID: 26791805.
- Naghii, M. R. (1999). The significance of dietary boron, with particular reference to athletes. Nutrition and Health, 13(1), 31-37.
Steve Theunissen
Author