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TestoFuel claims that you’ll build muscle with their blend of testosterone-boosting ingredients.

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TestoFuel Review: An In-Depth Look

By Anthony Dugarte, M.D., C.S.C.S

Updated on: Mar 17, 2020

TestoFuel claims that their blend of ingredients will help you naturally increase your testosterone level.

While both men and women produce testosterone (T), this hormone is produced primarily in the Leydig cells of the testes. Your T can positively affect muscle mass, body fat, bone density, heart health, and much more.

There is an age-related decline in T that often begins around the age of 40, though low T can affect both the young and old.

Deficiency can cause many unwanted effects like erectile dysfunction, fatigue, reduced muscle mass, and decreased bone density.

Testofuel claims that their T-boosting supplement can help you avoid these issues.

More specifically, they state that their anabolic support complex has been researched to ensure that you will:

  • Naturally and safely boost testosterone
  • Increase muscle size
  • Increase strength
  • Burn fat
  • Improve your mood
  • Boost self-esteem

But can this product really deliver on its claims?

In this article, we’ll help you figure out if TestoFuel can live up to the claims by highlighting any scientific support for the active ingredients.

Effectiveness of TestoFuel’s Ingredients

TestoFuel makes some pretty lofty claims. The proposed T-boosting and muscle-building benefits are possible by taking four capsules daily for at least 2-months, according to TestoFuel.

While many companies with similar products provide only the total amount of the entire proprietary blend, TestoFuel makes it a point to detail the amounts for each specific ingredient.

This is definitely a practice that works in their favor, as this makes it much easier to compare the ingredients to the available research.

In this section, we’ll share the results of our literature review to help you determine if TestoFuel lives up to the hype.

D-Aspartic Acid – 2300mg

Like other amino acids, D-aspartic acid is considered a building block of protein. It is deemed to be non-essential as the body can make D-aspartic acid on its own.

In healthy human subjects, 3.12g of D-aspartic acid daily enhanced the release of T when compared to placebo over 12-days.

These results were not confirmed in a later randomized study; 6g of D-aspartic acid daily was ineffective at increasing T in healthy, fit men over 3-months.

A recent review of 4 human studies found that doses ranging from 3ng to 6g led to inconsistent results.

D-aspartic acid’s ability to boost T is more consistent in animal studies; more long-term research with human subjects is needed to identify a possible role in dietary supplements.

As a dosing regimen that provided more than double the amount of D-aspartic acid was not effective, TestoFuel may not offer enough of this ingredient to help you get the results you want.

Vitamin D3 – 5000IU

As vitamin D deficiency is common, supplementation may be necessary for the maintenance of healthy bones and teeth. It may even help reduce your risk of developing cancer, type 1 diabetes, and multiple sclerosis.

In addition to its other vital roles, vitamin D may also help you elevate T levels.

In healthy overweight men, those that took 3,332IU of Vitamin D daily over 1-year boosted T levels 20% when compared to the placebo group.

Evidence that vitamin D is safe and effective in this long-term randomized study is promising as TestoFuel offers an even larger dose.

Zinc – 10mg

Zinc is an essential mineral that may limit the activity of 5-alpha reductase, preventing the conversion of testosterone to dihydrotestosterone (DHT).

Zinc deficiency was associated with a significant decrease in T levels in healthy, young men; zinc supplementation boosted T.

These findings were not supported in later studies, however.

Zinc did not improve muscle endurance, body composition, or T levels in healthy subjects treated with 30mg daily for 2-months.

Zinc at 30mg daily over 56 days did not increase T levels in healthy young men.

While laboratory studies have demonstrated a relationship between T and zinc, this has not been well supported in human subjects, even at doses nearly 3x larger than the recommended daily allowance (RDA).

Oyster Extract – 100mg

Thought to increase your libido, oysters may have a mechanism of action that involves Zinc.

This relationship was demonstrated when oyster extract boosted zinc levels in deficient mice. The role of oysters in boosting T in humans has not been well studied, however.

Ginseng – 100mg

This herb is native to Asia and has been used in natural medicine for many centuries.

While ginseng supplementation did increase T in human subjects, there are relatively few studies that have examined its reproductive effects.

Much more work is needed to determine a potential role.

Fenugreek – 100mg

This herb is often used in Indian cuisine and may support digestion.

Fenugreek is popular in T-boosting supplements. It is thought to block the conversion of T to DHT, though this proposed T-boosting mechanism is not well studied.

In a randomized trial, 500mg of fenugreek over 8-weeks significantly improved body fat composition and testosterone levels. In another study, 600mg of fenugreek over 6-weeks improved libido and other sexual health parameters when compared to placebo.

These results are promising, but more long-term research is needed to characterize the T-boosting effects of this herb fully.

Vitamin B6 – 5mg

Vitamin B6 is a common T-boosting supplement ingredient as it may enhance the proposed effects of zinc and also block the conversion of T to DHT.

These zinc-related effects were demonstrated in a laboratory study using human skin cells; vitamin B6 increased zinc’s ability to limit the conversion of T.

In a rat study, vitamin B6 blocked the conversion of T to DHT.

These benefits were not seen in human studies.

The addition of 11mg of vitamin B6 to 30mg of zinc did not improve muscle endurance, body composition, or T levels.

Though B6 may offer other health benefits, its potential role in boosting T is unclear, especially in human studies.

Magnesium – 200mg

Magnesium helps your body metabolize food, transmit nerve impulses, and boost calcium absorption for bone health.

It may also offer T-boosting benefits. Over one month, 10mg of magnesium daily boosted T in both sedentary adults and athletes.

Vitamin K2 – 18mcg

This rare nutrient works to improve blood clotting as well as bone and heart health.

In rats, vitamin K2 boosted T levels. Also, deficiency of this vitamin has been linked to T deficiency in rats.

Its potential role in humans has not been well studied, however.

Is TestoFuel Safe?

The ingredients included in supplements that claim to boost T naturally are generally safe for use. You should still be aware of the contents, however.

If you’re an athlete or in competition, it is a good idea to check the Controlled Substances Act for any banned substances your supplement may contain. It’s not worth missing a game over a dietary supplement.

The ingredients offered in TestoFuel are unlikely to cause you harm, especially when consumed as recommended. Excess amounts of these ingredients may be associated with digestive symptoms like stomach pain and diarrhea, however.

You may be more at risk for the unwanted side effects of elevated T, though there does not seem to be evidence that TestoFuel’s ingredients will boost T into an unsafe range.

Nonetheless, you should be mindful of the signs of elevated T:

  • Facial and body acne
  • Voice changes
  • Excess body hair/ male pattern baldness
  • Mood fluctuation

As hormone levels are tightly regulated by a variety of systems within your body, treating low levels should be done under the supervision of a medical professional.

If you think you are experiencing signs of low T, or if you feel you can benefit from a T-boosting dietary supplement, it’s safest to speak with a physician before use.

Pricing and Guarantee

You can purchase TestoFuel directly from their website; there are several options depending on your needs and budget.

When reviewing the table below, keep in mind that each box of TestoFuel contains 120 capsules - the equivalent of a 1-month supply.

Quantity Price Shipping Promotions
1 Box $65 $7.95 No
2 Boxes $130 Free No
3 Boxes $195 Free 1 Extra Box for Free
4 Boxes $260 Free 2 Extra Boxes for Free

While this supplement is relatively expensive, TestoFuel does offer the opportunity to save when you purchase more. For example, they’ll add two free boxes to your 4-box purchase, driving the price down to about $43/box.

They also try to ease any hesitation to purchase based on your budget by offering a 90-day guarantee on all purchases.


There is a wide array of T-boosting supplements available, and some even offer blends similar to TestoFuel.

Mega Men from GNC is a reasonably comprehensive supplement with 30 ingredients, some of which overlap with TestoFuel’s ingredients label.

In addition to vitamins D3 and B6, zinc, and fenugreek, you’ll get a variety of vitamins, minerals, amino acids, and extracts that work to offer support for your prostate, T levels, circulation, and brain. A 30-day supply is $79.99.

Lean Nutraceuticals offers a 1-month supply of their Natural Testosterone Booster for $23.75 on Amazon. Like TestoFuel, you’ll get zinc, fenugreek, and aspartic acid.

Another less convenient option would be searching the internet for TestoFuel’s ingredients to purchase individually. You’re less likely to save money, however.

The Bottom Line

TestoFuel includes several ingredients that are commonly found in T-boosting supplements. Unfortunately, many have limited or mixed support in human subjects.

Though these ingredients are likely safe when used as directed, excess T can cause a variety of unwanted effects. When you couple this risk with the fact that levels should be managed by a medical professional, it’s a good idea to speak to your doctor before use.

Also, these supplements tend to be pricey. A better starting point may be opting for natural means of boosting T like diet and exercise (we can link my other article once it is published).

Customer Reviews

2.8 Stars out of 44 Reviews
5 Star:27% 4 Star:18% 3 Star:0% 2 Star:11% 1 Star:43%
48% Recommend This Product
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Posted on Aug 21, 2015

Total, full brown scam.

By Mike Sutorius , Salt Lake City, UT

Don't buy TestoFuel because it's a scam and their money back guarantee is ridiculous.

I bought TestoFuel in April, took it religiously and worked out like a mad man. I saw absolutely ZERO results. When I asked for a refund I got a 2 month run around. I was intentionally given bad information by their "customer service" people so that they wouldn't have to give a refund on a technicality. I shipped back the unused portion (about $15 to ship it back using a method that required a signature, their requirement). At the point, for the first time, I was told that I needed to also send the empty bottles of the product that I had used. NO ONE had indicated that I needed to save the empty packaging. Fortunately, I had kept them. I sent them a picture of the empty bottles and the date, but they insisted that I actually send them back. This cost me another $15 and a couple of more weeks.

Ultimately, after exchanging over 20 emails, 2 shipments, over a month of dealing with them, and threatening to dispute the charge with VISA, they gave me a credit but they withheld $35 processing and $15 for THEIR shipping and I spent $30 on my own shipping costs. Basically, I still paid $80 for a pile of garbage.

It is a scam. They offer free product to people who will give them testimonials, so they have few positive ones out there. I do not believe the product works, and I KNOW that TestoFuel just wants your money. Spend your hard earned cash elsewhere.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 34 People Have Voted

Posted on Feb 24, 2015

Don't waste your money

By Michael, Cardiff, Verified Reviewer

I've been taken these for 2 months and they have had no effect at all, quite the opposite if anything. I feel tired and my sex drive has decreased.

My advice would be not to waste your money.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 21 People Have Voted

Posted on Nov 24, 2014

Doesn't seem to have any real benefits

By Les , Singapore

It was strange that I could only find positive feedback about this product. Anyways, I thought I give it a try and bought 4 packs, completed them and bought another 3 packs and completed 1 more so 5 packs in total. Well, it didn't give me any noticeable improvements in strength, lean muscle mass or libido. In fact, I felt more tired. Anyway, have been off it for a month, and never felt better. My conclusion, it doesn't work and is probably a placebo.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 19 People Have Voted

Posted on Aug 22, 2016

Doesn't work. Have blood-work to prove it.

By John Smith, Leesburg, VA, Verified Reviewer

I used this for 4 months. I had blood-work done to see my test levels before I started and retested after the 4 month period.

Natural males under 40 test levels are between 348-1197 ng/dL. I was 380 ng/dL when I started.

After 4 months and wasting $200 I am 383 ng/dL. You can get this much of a difference by eating strawberries and shrimp. Do not waste your money on this product.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 18 People Have Voted

Posted on Jul 7, 2015

Complete Junk

By John ,

Do not use. A complete rip off and it did nothing. This is a real review by a guy who shelled out the money. Complete junk so do not waste your money.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 15 People Have Voted

Posted on Jan 25, 2017

Didn't see much

By Andrew, Baltimore, MD, Verified Reviewer

So, I tried this product for a few reasons, mostly libido. I'm 37 years old and feel like lost some of that edge. Also, I wanted to use it for strength and conditioning. I followed the directions to a T, and altogether, I really didn't see that much difference. I've worked out a lot lately, and my gains are very similar to just anytime I work out harder (and I've experienced better gains with just creatine). I guess my expectations were too high. I would not purchase this product again.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 14 People Have Voted

Posted on Jun 29, 2016

Terrible company and product

By Nathan Hays, Florida, Verified Reviewer

Do not purchase this product. I purchased the 4 bottle pack and took it for 6 weeks. I lift 5 days a week and am very careful about my diet and water intake but I had splitting headaches every day, from the first day to the last, that I took this product. The day I stopped taking it was the day the headaches stopped. I wasn't worried though because they have an "iron clad guarantee" right? Not so much. When I contacted customer service I was told that the guarantee was for people who bought 90 days worth and had used it for 90 days. Because it gave me migraine headaches for 6 weeks I was not able to receive the refund. They did agree to refund the unused portion minus a $35 "processing fee" as well as shipping costs. So after it was all said and done I would have gotten about 25% of my money back. I saw no noticeable positive effects from this product, only headaches. Their "guarantee" is worthless. Save your money and buy some creatine and quality protein and you will be much better off.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 13 People Have Voted

Posted on Oct 21, 2018

Definitely a scam

By Ion A., Devon, England, Verified Reviewer

I've been taking these for the last two months and there's no effect whatsoever. I had loads of more improvement in libido and muscle growth when I had previously taken some cheap ZMA. What's worse is that there is no 90-day money back guarantee as they pretend: "The risk is on us." I have contacted them to try to return and recover some of the money, but I have obviously been rejected straight away. Somewhere in the small reading Terms and Conditions they say there is no money back for orders smaller than 3 months, although they advertise everywhere they do.

The only thing that they're good at is fake advertising, because the tablets, in my opinion, aren't worth a penny.


Bottom Line: No, I would not recommend this to a friend

Helpful Review? 13 People Have Voted

Posted on Mar 15, 2016

Zero Effect

By Patrick Edgerly, Verified Reviewer

I wouldn't recommend this product at all. First I waited weeks before I got the delivery, there were issues with the delivery company as well. But the main problem is that this product didn't actually work. Even cheaper testosterone boosters are working better than this. ZERO effect, nothing was working.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 12 People Have Voted

Posted on Sep 12, 2016

Did not work for me.

By David Nelson, Northern Ireland, Verified Reviewer

I am a sixty year old male and have used TestoFuel for four months.

I was very disappointed with this product it had no effect on me whatsoever never got any buzz or lost any fat.

I train regularly in my local gym with weights and there was no improvement their either.

I read a lot of reviews on the internet which convinced me that this was brilliant and after using it for four months I can honestly give my honest opinion that it was a waste of my hard earned cash.

Some reviewers said that it helped to improve their sex life well for a sixty year old male it had no effect at all and at my age you are always hoping that you can find something that will help in that department.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 12 People Have Voted

Posted on May 8, 2017

Did not work for me

By JP, Canada, Verified Reviewer

I bought this product, and after three weeks, I had to stop taking it. I had headaches and felt really moody; close to feeling depressed. I was also really tired. I stop everything, and after 5-6 days, all came back to normal. I was me again.

It just did not work for me.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 12 People Have Voted
Showing 1-11 of 44

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