Legion FORGE Belly Fat Burner – Does It Work?










  • HMB seems to be effective


  • Is little more than a HMB supplement
  • Citicoline unnecessary in a fat burner
  • Formula thin and under-powered
  • Expensive for what it is


Full Legion FORGE Review


Product Overview

We don’t need to spend too long explaining what Legion FORGE Belly Fat Burner is all about; it’s right there in the name. 

FORGE is a fat loss supplement which currently seems to do most of its business through Amazon. We haven’t seen it on sale in supplement or health food stores as of yet. We have never seen it advertised online, nor have we seen it mentioned on social media. 

That said, Legion are clearly quite a big outfit. They have a large and diverse supplement range, including multivitamins, whey protein, sleep aids and pre-workouts. 

There are also plenty of reviews of Legion products out there. As such, we thought it was about time we did a thorough Legion FORGE Belly Fat Burner review. 


Legion FORGE Belly Fat Burner Review


Unlike many other fat burners on the market today, Legion FORGE claims to be able to deliver fat loss in very particular ways. Namely, it claims to specifically target belly fat, and the official website states:

“FORGE helps you lose fat—and “stubborn” fat in particular—faster, preserve muscle, and maintain training intensity and mental sharpness.”

We don’t need to explain why we dislike this kind of talk to our regular readers. Nor will we have to explain why these sort of promises are misleading to those of you with a good knowledge of human physiology and bodybuilding. But we will discuss this in some detail later in the review.

Interestingly, Legion FORGE Belly Fat Burner is listed on the Legion website as both a pre-workout and a fat burner. 

Indeed, the bottle also describes it as a “pre-workout fat burner”.

While many fat burners are taken pre-workout, these two types of supplement aren’t the same. They don’t work in the same way, they aren’t designed to do the same thing, and they don’t produce identical results. 

Fat burners can and should be taken even on non-training days. High quality, natural fat burners should be designed for regular consumption, with a full dose spaced over the course of a day. 

Obviously, pre-workouts are different. 

We will therefore look at whether or not this product delivers on both of these fronts. 

So, without further ado, here is our full Legion FORGE Belly Fat Burner review. As always, if you have any questions at the end of the review, please post them in the comments section and one of our review team will try to answer as best as they can. 


Legion FORGE Belly Fat Burner Formula

The Legion FORGE Belly Fat Burner formula is not like the vast majority of fat loss supplements we have reviewed on this site. 

The main thing that makes it stand out from the crowd is the sheer paucity of ingredients. The entire formula is composed of just 3 ingredients. 

Before we discuss them in any detail, you need to know what we’re talking about. Here’s a shot of the FORGE label showing the ingredient list:


Legion FORGE Belly Fat Burner Ingredients


If you purchase a bottle of FORGE from a third party merchant and your ingredient list looks any different to this, get in touch with the manufacturer immediately and tell them.


As we said, FORGE contains just 3 main ingredients; 4 if you include the added calcium.

To really understand whether or not this supplement is likely to deliver, we need to understand what each ingredient is, how it is thought to work, and if the science is there to back these claims up. 

Here is a brief overview of each ingredient. Once we have explained what each ingredient is thought to do, we’ll discuss how we think they will work together, and if we think FORGE is likely to deliver on Legion’s promises.


FORGE Ingredients Review

We will start with the main ingredients in FORGE; those with some unusual properties which see them regularly included in supplements. 

β-Hydroxy β-Methylbutyrate, or HMB to give it its more common (and palatable) name, is a relative newcomer to the fitness industry. It has only been appearing in supplements for the past 5 years or so, but it is now being included in most fat burners, pre-workouts, and mass gainers which come to market. 

The reason ti is included in so many bodybuilding supplements these days is because it is thought to prevent muscle wastage. It is thought to be, in effect, an anti-catabolic agent. Here is a screenshot taken from the official Amazon merchant page for Legion FORGE:


legion forge belly fat burner ingredients hmb


Indeed, on the face of things, HMB does seem to be quite an effective anti-catabolic agent. 

HMB is an active metabolite of leucine. Leucine is an amino acid; in fact, it is thought to be the amino acid which triggers protein synthesis in muscles.

Consuming leucine regularly has long been thought of as a way to prevent muscle breakdown during a cut; the other way to prevent catabolism is to eat a regular meal, which will mean extra calories and an insulin spike. 

The official FORGE website lists several scientific studies attesting to HMB’s ability to preserve muscle mass while the body is effectively in a fasted state (when catabolism usually begins). 

For example, this study found that “HMB-FA supplement given to trained athletes before exercise can blunt increases in muscle damage and prevent declines in perceived readiness to train following a high-volume, muscle-damaging resistance-training session.”

Another clinical trial, published in 2013 in the Journal of Physiology, concluded that “exogenous HMB induces acute muscle anabolism (increased MPS and reduced MPB)”, where MPB stands for “muscle protein breakdown”. 

So why include HMB? Why not just consume more leucine?

Well, while leucine seems to be significantly more effective at promoting muscle mass growth, HMB seems to be significantly more efficient when it comes to preventing catabolism.

Some suggest that a few grams of HMB is as effective at preventing muscle protein breakdown as consuming more than 20g of leucine. We haven’t been able to verify that claim, but it does give you an idea of how HMB and leucine differ. 

The 2.5g of HMB in FORGE is within the range of doses used in the above cited studies. 


citicoline Legion FORGE Belly Fat Burner ingredients


Citicoline is not something we usually see in fat burners.

That’s no doubt because it doesn’t have any fat burning effects!

Citicoline is usually found in supplements helping with focus, memory, and studying. 

It is an analogue of choline, which is itself a precursor to a very important neurotransmitter called acetylcholine. 

Acetylcholine is sometimes called the “learning neurotransmitter”. It is heavily involved in neural communication in areas of the brain thought to control memory, focus, attention, and verbal fluency.

It is also involved in muscle contraction and co-ordination.

In most studies showing benefits of Citicolin use, just over 200mg have been used on a daily basis.

So Legion are quite justified in claiming that FORGE Belly Fat Burner is able to deliver “mental sharpness”. There should also be some carryover benefits in terms of more efficient muscle contraction (although these effects should not be noticeable). 


FORGE ingredients yohimbe


The final main active ingredient in Legion FORGE Belly Fat Burner is Yohimbe

We are less than convinced about the effectiveness of Yohimbe as a fat burner, to put it mildly. 

This herbal extract has traditionally been used to treat a variety of ailments, but it is most commonly associated with infertility and impotence

This could perhaps explain why many supplement manufacturers now claim that yohimbe can raise testosterone levels. 

A growing number of natural testosterone boosters use yohimbe as their main active ingredient, and many fitness bloggers have jumped on the band-wagon, claiming that yohimbe can raise free T levels in otherwise healthy, young, active men. 

This is also why yohimbe is found in modern fat burners; higher testosterone levels mean more muscle growth, and a higher rate of fat oxidation (fat burning). 

Sadly, we don’t think these claims stand up to scrutiny. 

There is one study showing that yohimbe is an effective fat loss enhancer. 

This study, published in 2006, apparently found that “yohimbine supplementation appears to be suitable as a fat loss strategy in elite athletes.”

However, when you look at the actual results, you’ll see that the effect yohimbe had was less than conclusive in all cases:

“There were no statistically significant changes in body mass and muscle mass within or between trials (p > 0.05) after the supplementation protocol. Percentage of body fat significantly decreased in the yohimbine group after the supplementation protocol (9.3 +/- 1.1 vs. 7.1 +/- 2.2%; p < 0.05).”

So some members of the placebo group achieved lower fat levels than those in the yohimbe group, and vice versa. 

This study was also only conducted on 20 soccer players for a relatively short period of time.

We know nothing about their starting body fat percentages (so how much they stood to lose), their training, their diets, and so on. To our knowledge, none of these things were controlled for. 

So, since this is the only study showing Yohimbe as having any kind of fat burning effect, we’re forced to conclude that it isn’t as effective as some supplement manufacturers make out. 

Another major problem with this study is that some of the soccer players apparently got down to 7% body fat. Despite what you read in magazines, 7% body fat is practically impossible for a healthy adult male to achieve. For an athlete who prioritizes performance, this body fat level would not even be desirable. For a point of comparison, here is Conor McGregor, who a DXA scan found to be 7% body fat.


What About Calcium?

Surprisingly, calcium has been found to be an amazingly potent fat loss enhancer. 

This study, published in the International Journal of Obesity in 2005, found that calcium intake was closely related with increased fecal fat excretion during a diet. 

To quote the researchers involved: “A short-term increase in dietary calcium intake, together with a normal protein intake, increased fecal fat and energy excretion by approximately 350 kJ/day. This observation may contribute to explain why a high-calcium diet produces weight loss, and it suggests that an interaction with dietary protein level may be important.”

So why is this not listed as a main active ingredient?

Because in the study cited, no big difference was seen in the low calcium group, and this group actually consumed more calcium than you will find in a single dose of Legion FORGE Belly Fat burner. 

The 338mg of calcium found in FORGE isn’t going to make a difference to your body in any way, assuming of course that you already get some calcium in your normal diet. 

Legion FORGE Belly Fat Burner Side Effects

Because the formula is so limited in scope, there isn’t much that gives us cause for concern in FORGE.

While HMB is currently popping up in every other bodybuilding supplement to hit the market, it is a little under-studied. As mpore research is done on this compound, we will understand its long term effects more.

However, as it is simply a metabolite of leucine, regular usage is unlikely to have any long term side effects.

The only real concern as far as side effects are concerned is the citicoline.

Few users of fat burners are concerned with improving their memory or concentration. If you don’t struggle with these things, then supplementing for them is unwise. 

Citicoline is safe for most users, and very people experience side effects while using it. However, side effects are still possible, and if you have never used a compound like this before then obviously you are more likely to notice unwanted effects.

This is particularly true with a dose as high as 250mg per day.

Common side effects of citicoline over-consumption include headaches, dizziness, irritability, lack of focus, and nausea. 

We must stress here that we are not experts on this substance or its usage. Our area of expertise is fat burning supplements, not study aids. 

Please book an appointment with your regular family physician and talk to them about your plans before starting a new supplement regimen. Taking strange substances that you aren’t used to consuming is not something to undertake lightly. Do not gamble with your health, and do not take medical advice fro the internet. Talk to a qualified doctor first!


Review Conclusion – Our Thoughts On The FORGE Formula

Despite containing some really interesting and clearly quite effective ingredients, we still couldn’t get too excited about FORGE.

For one thing, this supplement cannot be called a pre-workout by any means. There is nothing in this formula that makes it ideal for consumption before hitting the gym. it contains no caffeine, no creatine, no betaine, no citrulline malate; in short, nothing that might boost performance in the gym or help you achieve a better pump. 

For another, while citicoline is able to boost mental performance and focus, we don’t think this is particularly necessary in a fat burner. 

Finally, the most fundamental problem with the Legion FORGE Belly Fat Burner formula is the fact that it is so barren. 

Compared to most other modern stacks, this supplement is simply not comprehensive enough.

Sure, HMB might prove to be an incredible tool for natural bodybuilders, but it alone is unlikely to make that much of a difference to your cut. 

It doesn’t have any actual fat burning properties, so if your primary concern is fat loss, HMB isn’t going to help you a great deal. 

It does seem to effectively prevent muscle mass loss (to an extent), but this isn’t the biggest problem amateur bodybuilders face. For most people, assuming your diet and training are reasonable, losing the fat will be the biggest hurdle to success. 

For non-competing bodybuilders, losing muscle mass is far from the primary concern. The human body does prioritize fat loss over muscle loss, so losing the fat is the biggest challenge. 

Yohimbe is un-proven in our opinion, and such a low dose of calcium will not make a significant difference to your cut. 

All-in-all, this is a pretty thin, under-powered, and ultimately second-rate fat burner. 

If you’re serious about losing as much weight as possible while minimizing muscle mass loss, then there are significantly better supplements on the market than Legion FORGE Belly Fat Burner. 

If you want to lose body fat in a safe, sustainable, predictable manner, then check out our top rated supplements. 

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  1. Kyle

    If you actually read what this product is/does, it is called a “pre-workout fat burner” because it is meant to be taken when training in a fasted state… because yohimbine is not effective when insulin levels are raised. Nowhere does Legion Athletics ever insinuate or say that this product works as a pre-workout.

    I know that you allude to not being able to target fat loss… and Mike Matthews, the owner of Legion Athletics, has hundreds of times agreed with you…. BUT if you read how yohimbine works, it blocks the activity of alpha receptors in fat cells. Now, this is why this product says it helps with reducing “stubborn fat” (generally lower abs (most guys) or hips and thighs (most girls). The fat cells in those areas tend to be high in alpha receptors…. hence being “stubborn”.

    Also, there is no “added” calcium… at least in the sense that you allude to. The calcium comes from the CDP-Choline.

    I am going to stop here. Disappointing. Research before posting.

    Also, had some of links to scientific articles from pubmed, but I guess that marks my comment as spam so I can’t attach them.

    1. FBDTeam (Post author)

      Hi Kyle,

      Thanks for commenting. Since you clearly have some kind of affiliation with the product (you’re familiar enough with the owner of Legion to know hundreds of his statements), we would prefer it if you stated that clearly when commenting next time.

      You can also drop the rather condescending tone. We have actually read what the product is/does. We just obviously disagree with you on its quality. That might upset you, but all we can do is welcome you to the internet. The whole “not going to bother reading any more” is a bit laughable too, since we are absolutely sure that you read the whole thing, we couldn’t care less anyway, and you’ve already given us an SEO bump by commenting.

      “Nowhere does Legion Athletics ever insinuate or say that this product works as a pre-workout.”

      They call it a “pre workout fat burner” on their website. The official website says Legion FORGE can “help you maintain intensity and focus in your workouts”. You can try to twist things in the small print if you want, but the “we never meant it like that” excuse is kind of pathetic.

      “because yohimbine is not effective when insulin levels are raised.”

      Yohimbe is not effective at all. You can post a pubmed link showing us that it is, and we’ll show you 20 where it was found to do diddly squat.

      “The fat cells in those areas tend to be high in alpha receptors…. hence being “stubborn”.”

      That’s so misleading we’re tempted to call it lying. People struggle to lose fat around their lower abs (for guys) for the simple reason that this is your body’s preferred fat store. It is the first place to gain fat and the last place to lose it. You can’t have flabby arms and a completely ripped stomach, because to lose stomach fat you need to exhaust fat stores elsewhere first.

      You’re more than welcome to comment Kyle, but we will only tolerate one shill comment, particularly one with such a strong smell of pretension.


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