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Best Fat Burner For Men [Updated 2023]


Fat Burners Reviewed


Hours of Research


Reviews Examined


Experts Interviewed

David | A Lean Life

Published by David Williams

As an engineer, David loves technical product comparison and analyzing the data to assess top products.

Table of Contents

When you are dealing with excess body facts in your body, you tag many health issues, like high blood pressure and heart complications. The worst part about that is that weight loss can be taxing, and most people give up before they make much progress. Therefore, we introduce fat burners, a solution that will make your weight loss journey easier.

As in the name, fat burners are usually (mostly pills) supplements that help shed excess weight by burning stored body fat. While most work under the same principles, they are different. And there are many.

So, how do you know the most effective one? You don’t have to worry. This article reviews five of the best fat burners for men.

The Best Thermogenic Fat Burner Supplements - Instant Knockout Cut

Instant Knockout

Ingredient Quality

Appetite Control



Overall Score

The Best Thermogenic Fat Burner Supplements - Hourglass Fit

Hourglass Fit

Ingredient Quality

Appetite Control



Overall Score

Hunter Burn - Best Fat Burner

Hunter Burn

Ingredient Quality

Appetite Control



Overall Score


1. Instant Knockout Cut- Overall Best Thermogenic Fat Burner

Instant Knockout Cut - Best Fat BurnerInstant Knockout Cut is a safe fat-burning supplement for men that helps you lose weight quickly. It contains some of the finest ingredients anyone can get.

Initially, the product was to serve MMA fighters in reducing stubborn belly fat before facing off in the ring. But it has proven that it can work even for non-athletes. It should be your go-to weight loss supplement if you want to take the cuts.

According to the company, this fat burner can help you lose weight quickly without risking your health. It also promises to increase energy to keep you fit and away from snacks. The best part about Instant Knockout Cut is that it uses all-natural ingredients. It has no synthetic compounds or sugar that can pose a health risk and derail your fitness goals.

But how does it work? It’s pretty simple through a process called thermogenesis. That is where an ingredient raises body temperature to metabolize stored fat. It also reduces hunger, maintains muscles, and increases your energy levels.

Brand Overview

Instant Knockout Cut is a dietary weight loss supplement created by Roar Ambition in 2014 under the brand Instant Knockout. The UK-based company is a leading sports and nutritional supplement manufacturer with a strong presence in the USA and Europe. Its other products include pre-workout supplements and testosterone boosters.

It’s the company behind some of the most popular products you’ve seen, like PrimeMale, TestoFuel, and many more. The brand has consistently produced high-quality products that deliver on every promise. In fact, it offers a money-back guarantee to anyone who might not see results proving that they don’t just sell but stand by their products.

You only expect the best from such a company, and Instant Knockout Cut is precisely that. Here is what comprises this fat-burning pill:

Highlighted Features

  • 30 servings per container
  • 5 mg Vitamin B6
  • 5 mg Pyridoxine-HCl
  • 45 mcg / 1800 IU Vitamin D3
  • 10mcg Vitamin B12
  • 300 mg Dehydrated Caffeine
  • 100 mg L-Theanine amino acid
  • 10 mg Black Pepper Extract
  • 100 mg Cayenne Powder Extract
  • 500 mg Green Tea leaf extract
  • 1.80 mg Glucomannan sourced from Konjac Root

Other Non-Active Elements Are:

  • Vegetable Cellulose
  • Microcrystalline Cellulose
  • Magnesium Stearate
  • Silicon Dioxide



Instant Knockout Cut Review

The Instant Knockout Cut supplement has nine ingredients that work differently. Some increase your body temperature, while others boost metabolism and suppress your appetite. These natural processes help you lose fat quickly without risking your health.

Here is a breakdown of each ingredient:

Green tea. Green tea will keep you healthy by preventing any complications arising from your gut area.

L-theanine. L-theanine amino acids will regulate your brain’s chemical and signal functions. It helps relieve stress, improve your mood, and better sleep. That way, you can have better muscle recovery after a workout.

Glucomannan. Glucomannan is a natural fiber that reduces the amount of food you consume. It does this by absorbing water and swelling in your stomach, reducing your food intake. It tricks your body into believing you’re full and hence avoids overeating.

Black pepper extract. The black pepper ensures the body absorbs all the other ingredients in this fat burner. That way, you can maximize its benefits.

B-Vitamins. The vitamins come as immune and focus boosters. It reduces blood pressure which stimulates your exercise performance.

Instant Knockout Cut Price

One 30-day dose goes for $59.00, while Two (2) packages go for $118.00. Three (3) bottles with an extra free bottle cost $185.00. And you get free shipping worldwide for orders above two bottles.

However, Instant Knockout Cut is only available on the company’s official website.

Customer Review

Instant Knockout Cut has lots of positive reviews. For example, the brand website has many, with people showing their before and after images proving its effectiveness. There are also videos showing the same.

We also found other customer reviews from independent sites like Amazon. And even there, the majority were positive. For example, one satisfied customer wrote, “While taking 4 a day is a little frustrating, this product has enabled me to train longer & harder. I have noticeable improvements in shifting fat and toning muscle.”
Others called it superb and the best fat burner they had ever used.

We also saw a few negative comments, mostly about price. The users said the price was too high. However, for such an effective fat-burning supplement, the price is justifiable.

2. Hourglass Fit - Best Thermogenic Fat Burner

Hourglass FitHourglass Fit is another best fat burner from Roar Ambition. Like its counterpart, it also uses thermogenic principles to burn fat. However, this one has no caffeine.

Hourglass Fit largely depends on capsicum, pepper extracts, and vitamins as its main ingredients. These natural products boost your metabolism, burn fat, and suppress appetite.

As the name suggests, the fat burner is primarily a female-oriented supplement. However, it can still work for men struggling with weight, especially older men. While you won’t be a glass figure as a man, you will lose that stubborn belly fat that causes all manner of health issues.

In fact, it might work better for men, especially if they have excess body fat.

Brand Overview

As mentioned, Hourglass Fit is also a product of Roar Ambition. The fat burner has been making waves in the supplement industry since 2014. In 2021 it got named among the top five best fat burners.

Roar Ambition has built a reputation for making clean, high-quality sports and nutritional supplements. And, it’s not just making; all their formulas have undergone thorough scientific research. They are also vigorously tested for safety, efficacy, and purity. Hourglass Fit is one of these products.

It has no artificial ingredients or additives. Additionally, it is vegan-friendly and gluten-free. So it fits even the most sensitive dietary needs.

Highlighted Features

  • 30 servings per container
  • 3,000 mg Glucomannan per serving
  • 100 mg Capsimax powder
  • 150 mg 5-HTP
  • 8 mg Zinc
  • 1.7 mg Vitamin B6
  • 5 mg Black pepper
  • 1.1 mg Vitamin B2
  • 2.4 mcg Vitamin B12
  • 125 mcg Chromium



Hourglass Fit Energy Review

The effectiveness of any fat burner largely depends on its ingredients. In Hourglass Fit’s case, it has some of the most reliable and effective ones. Here is a brief of how each one works.

Glucomannan. Glucomannan is a water-soluble fiber sourced from the Jonjac root. When consumed in a supplement, it settles in the lower intestine, absorbs water, and expands. As a result, you feel full, suppressing your appetite and cravings.

And that’s not all. Glucomannan also helps reduce cholesterol and excess sugar levels in your system. It lowers the chances of acquiring diabetes in the long run.

Capsimax powder. Capsimax is a known thermogenic ingredient that helps boost your metabolism and burn fat. The powder comes from the capsicum plant or red chilli. It contains properties that help suppress hunger, improve metabolic rate, and reduce stress hormones. Additionally, it can also boost energy levels.

5-HTP. 5-HTP or 5-Hydroxytryptophan is an amino acid produced by the body. It helps regulate your appetite and boost your mood (prevents stress eating). This ingredient boosts serotonin production in the brain, which helps reduce emotional eating.

Zinc. Although zinc is not a significant element, it has its fair share of benefits. When it comes to weight loss, zinc helps reduce appetite levels.

Aside from weight loss benefits, zinc is also known to improve immunity. Additionally, it aids in protein synthesis and controls insulin levels, which controls diabetes.

Black Pepper extract. Eating pepper, you get to burn belly fat naturally via thermogenic effects. However, it also attracts a burning sensation to your mouth, oesophagus, and stomach. To avoid this, Hourglass Fit uses black pepper extract that is easier on you yet still effective in fat-burning.

B-Vitamin. B vitamins are essential for general energy production and metabolism. They help break down food into energy and fuel your body while exercising.

As part of a low carbs diet, especially for fast weight loss, B vitamins create new brain cells and body tissues, including muscles. That way, you don’t lose your muscle mass.

Chromium. Chromium helps reduce sugar cravings and regulate blood sugar levels. It stabilizes insulin levels and allows your body to utilize stored fat for energy. With that, you reduce stored fat and prevent fat accumulation.

Hourglass Fit Energy Price

A bottle of Hourglass Fit Energy has 120 pills, enough to take you through the month. This one goes for $60. The second offer is a two-bottle package worth two months’ supply containing 240 capsules for $120.

The last offer contains three bottles plus one free with 480 capsules, costing $180. You also get free delivery for orders worth two months’ supply. But you only buy from the official website.

Customer Reviews

Hourglass Fit has lots of positive reviews from customers who have used it. Most people find it effective as a weight loss aid and have termed it a “real fat burner.”

We checked the brand’s website and saw hundreds of positive feedback. There are even images and videos or before and after results.

Moreover, the fat burner received overwhelmingly positive reviews on independent sites such as Amazon. For instance, one customer wrote, “Pills are not big and go easy. Seems to work. Lost 1 pound already.”

Another satisfied user said, “I like this product. A lot of manufacturers and sellers tend to overstate the benefits. However, I have not seen the same in this. It worked for me. I give it my highest recommendation. Five stars!”

Having read tons of reviews, it is clear that Hourglass Fit Energy is one of the best fat burners for men. It’s an excellent choice for shedding excess fat without any side effects.

3. Hunter Burn

Hunter BurnHunter Burn is another excellent fat burner for men from Roar Ambition. Hunter Burn contains some of the most potent fat-burning ingredients, like its sister products. Chief among them is white kidney beans, cayenne pepper, and matcha green tea extract. But there is a special one.

According to the brand website, Hunter Burn promises to help you lose weight and preserve lean muscle mass simultaneously. The special ingredient behind this is L-Theanine. That’s not something you find in any regular fat burner. In fact, maintaining muscles while cutting carbs is a challenging task.

While it does not offer caffeine for stimulated energy, Hunter Burn utilizes Kidney bean extract. This ingredient reduces carbs absorption and reduces the breakdown of complex carbs. This characteristic prevents fat storage and increases fat burning.

Brand Overview

As mentioned above, Hunter Burn is a product of Roar Ambition under the brand name Hunter Evolve. The company has been providing quality dietary supplements since 2012.

As part of Roar Ambition, it uses only premium quality ingredients and standards. Surprisingly, of the three products made by Hunter Evolve, HunterBurn is the only one that targets fat loss. That ensures they can put more focus and resources into making this product the best it can possibly be.

But does it contain? Here is what you can expect.

Highlighted Features

  • 30 servings per container
  • 3000IU of Vitamin D3
  • 3000mg of Konjac root extract
  • 500mg of white kidney bean extract
  • 200mg of L- Theanine
  • 125mg of Cayenne pepper
  • 200mg od Matcha green tea



Hunter Burn Energy Review

While the ingredient list in Hunter Burn is short compared to what you find in others, it’s effective precisely because of the proper dosing and quality.

Vitamin D3. Vitamin D3 is an essential vitamin that contributes to your immune system and helps your muscles fanfiction properly. Since you spend most of your days working (indoors), you don’t get enough of this from the sun. By supplementing it with 3000IU, you ensure you have enough to keep your body functioning correctly.

Glucomannan. This ingredient is a type of fiber extracted from Konjac roots. Ideally, it suppresses appetite and cravings by making you feel full for longer. So you can understand why Hunter Evolve includes it in their supplements.

White Kidney Bean. This ingredient is a plant extract that helps your body block carb absorption. That way, no carbohydrates are getting stored in the form of fat. Only enough to keep you energized. (1)

L-Theanine. L-Theanine is an amino acid that preserves your muscles as you lose weight. That’s what sets Hunter Evolve apart from other fat burners. You get to shed the fat and look good while doing it.

Cayenne pepper. This pepper extract is responsible for the thermogenic effect. By raising temperatures in your body, you burn more fat than you would working out. That leads to an exasperated weight loss.

Green tea. Green tea is a popular ingredient in fat burners, and Hunter Burn is on the list. It contains antioxidants that help reduce inflammation levels.

Hunter Burn Energy Price

One bottle of Hunter Burn of 180 capsules costs $90.00 (1 month supply). Two bottles cost $180.00, while 3 with one extra free bottle cost $270.00.

Customer Reviews

Hunter Burn boasts impressive reviews from its customers. Most of them agree that it helps reduce stubborn fat. We saw many positive comments on the brand’s website.

One customer wrote, “Hunter Burn is easily the best fat burner I have ever tried. After two months I can feel a significant change in body weight and how I look. Thanks, Hunter Evolve!”

Another one, Taylor Wetherell, wrote, “I have been using Hunter Burn for over 4 months and I must say that it’s truly a remarkable product. It helped me lose 7lbs of stubborn fat and gain back my confidence. Highly recommended.”

4. Capsiplex Burn

Capsiplex BurnCapsiplex Burn is another best fat burner for men. As its name suggests, it utilizes the power of capsicum fruits to burn that belly fat and promote weight loss. It also contains chili, which helps boost metabolism and thermogenesis. Additionally, it uses L-Tyrosine and L-Arginine HCL to suppress cravings and develop lean muscles. (2)

According to the company, Capsiplex Burn can help you shed extra pounds and harden your abs. It’s not often a fat burner that promises weight loss and protects your muscle mass simultaneously.

So what makes Capsiplex Burn so unique? Let’s find out.

Brand Overview

Wolfson Brands UK Limited is the company behind Capsiplex Burn. While this UK-based is relatively new in the sports and fitness industry, it has disrupted the market with high-quality products. Some of its best include PhenQ, Crazy Nutrition, CrazyBulk, and more.

If you’ve been in the supplement space, you’ve probably seen or heard of one or several of these products. As such, you only expect the best from Capsiplex Burn. Actually, that’s what it is: the best fat burner for men.

Here is what Capsiplex Burn has to offer.

Highlighted Features

  • 30 servings per container
  • 16 mg Vitamin B3
  • 1.7 mg Vitamin B6
  • 2.67 mcg Vitamin B12
  • 500 mg L-Arginine HCl
  • 170 mcg Chromium
  • 250 mg InnoSlim
  • 760 mg Capsicum Fruit Extract
  • 76 mg Green Tea Powder
  • 20 mg Black pepper Fruit Extract
  • 800 mg L-Tyrosine
  • 150 mcg Iodine
  • 1 4.5 mg Green Coffee Bean Extract 40
  • 200 mg Caffeine Anhydrous



Capsiplex Burn Energy Review

Capsiplex Burn contains 13 ingredients that all boost weight loss and improve your health and physique. Several are unique, and you’ll often not find them in other fat burners. Here are summaries for each of these ingredients.

B-Vitamins. Generally, vitamins B3, B6, and B12 enhance cellular health. As you lose weight, your muscle tissues need enough of these vitamins to prevent them from getting weak. Additionally, B vitamins have metabolic properties that help your body optimize fat burn.

L-Arginine HCl. This amino acid helps to ease the process of muscle recovery after a strenuous workout. It also supports fat metabolism helping you build and retain lean muscle mass.

Chromium. Chromium helps to stabilize blood sugar levels and hence relieves cravings. It can also regulate brain chemistry and signaling. That way, it tricks your mind into thinking you’re full and reduces your food intake. (3)

InnoSlim. InnoSlim is a proprietary blend of two natural ingredients (Astragalus and Ginseng). It’s very popular with pre-workouts. These two micronutrients contain compounds instructing your cells to burn stored fat and provide energy.

Capsicum Fruit Extract. This extract contains capsaicin which is the active ingredient responsible for boosting thermogenesis. That way, your body burns more calories while idle or during workouts. It also plays a role in reducing appetite, giving you more control over your calorie intake.

Black pepper Fruit Extract. The ingredient helps to improve your digestive health and reduce bloating and bowel issues. Additionally, it helps your body absorb other vitamins, minerals, and nutrients into your body.

L-Tyrosine. Tyrosine is another amino acid that helps regulate thyroid function. Proper regulation of these hormones ensures less cravings and more energy.

Iodine. This mineral improves and maintains the thyroid. As a result, you control your appetite.

Capsiplex Burn Energy Price

You can start with one bottle containing 30 servings for $64.99. However, if you want two months’ supply plus one free, you’ll spend $129.99. The last offer is a three-bottle plus one free packaging that costs $194.99.

Customer Review

It’s easy to have some skepticism toward a new product. To ease your mind, we put together a few reviews from the company’s website.

Robert from Arizona, “I have tried different products, and so far, Capsiplex Burn is his best. I have been using the supplement for weeks and can see a more toned body.”

James from New York says, “You will be more ripped after a few weeks of using Capsiplex Burn. If you are more consistent, you will enjoy fat-burning benefits, especially around your abdomen.” He sounds excited to find a supplement that suits his needs.

Overall, Capsiplex Burn is an effective fat burner that can help you lose weight faster. It may have a higher price, but it’s worth every penny if you crave a lean and toned physique.

5. Burn Lab Pro

The Best Thermogenic Fat Burner Supplements - Burn Lab ProBurn Lab Pro is another best fat burner for men. Like the rest, it uses thermogenic ingredients that help the body burn more fat and get you in shape.

It contains five ingredients that all work differently to increase metabolism, burn fat, and increase muscle mass. And no, it does not use caffeine. However, it has a few unique compounds that are less popular with other fat burners.

For instance, it comes with Forskolin extract, an Indian root extract found in the coleus plant. You will find this in only a few fat burners. Studies have shown that it increases the body’s ability to break down fats and prevents more from getting stored. (4)

What’s more? The Burn Lab Pro is vegan-friendly, boasting only natural ingredients. It’s free from GMOs, gluten, and other toxic substances. All this makes a safe and effective fat burner for men.

Brand Overview

The company behind the Burn Lab Pro is Opti-Nutra, a reputable British supplement manufacturer. While the company is relatively young in the market (it started in 2018), it has built a name for itself in the sports and nutrition industry.

The company takes great pride in producing clean and effective supplements. Plus, every product undergoes thorough scientific research and testing.

Burn Lab Pro is one of these products. True to its name, it promises to help you burn fat faster and boost your energy levels using natural ingredients. But what does it contain? Keep reading to find out.

Highlighted Features

  • 30 servings per container
  • 375 mg ForsLean
  • 1500 mg HMB
  • 90mcg GTF chromium
  • 3.75 mg BioPerine black pepper extract
  • 262.5 mg calcium



Burn Lab Pro Review

This Burn Lab Pro supplement works in several ways. The first one is the apparent heat production which leads to thermogenesis.

The second one is increasing lipolysis. This process accelerates the breakdown of stored body fat into energy. As you can guess, your body gets the fuel it needs while reducing excess fat, hence losing weight.

Here is a breakdown of how every ingredient contributes to the process.

ForsLean extract. This ingredient stimulates fat-burning hormones and maximizes the oxidation of fats. Optimizing hormones alone allows your body to burn more fat, even without exercise. Additionally, the compound can help alleviate stress, ensuring a pleasant mood as you go through cuts.

HMB. HMB or ß-hydroxy ß-methyl butyrate is another fat-burning ingredient. It helps prevent muscle breakdown by stimulating protein synthesis. What’s more? When used alongside a low-calorie diet and high-intensity exercises, it helps develop lean muscle mass. (5)

GTF Chromium. GTF, or Glucose Tolerance Factor, increases insulin sensitivity and checks blood sugar levels. That helps your body to burn fat instead of storing it. It also stimulates brain functions to trick your body into thinking you’re full and avoid eating more calories.

BioPerine. This thermogenic ingredient is an extract from black pepper, which helps your body absorb other ingredients faster. It increases the absorption rate of other nutrients and speeds up metabolism.

Calcium. Calcium is your go-to bone mineral. But it helps you keep fit with stronger bones as you lose the excess pounds.

Burn Lab Pro Price

A container of Burn Lab Pro containing 30 servings worth one month’s supply costs $35.40. Two bottles of the same with 60 servings worth two months’ supply cost $70.80. On the other hand, purchasing three boxes plus one free with 120 servings will cost you $106.20.

You can find Burn Lab Pro on the brand’s main website. The brand offers free shipping on orders worth $35.40 and more. Additionally, you get a 30-day money-back guarantee if you are not satisfied with the product.

Customer Reviews

Burn Lab Pro enjoys an overwhelming response from customers. Most user reviews raved about how effective the fat burner is in speeding up weight loss and energy boost.

One customer wrote, “I have cut to three tablets a day, as four were too strong on my empty stomach. Since then, I have seen a definite decrease in my weight. Due to arthritis complications, I am not as active as I was before. However, these capsules help me feel less hungry and a bit more energetic. As a person who has slowed down due to medical conditions definitely needs to cut calories; these have helped in that regard.”

Another one said, “I had reached a fat loss plateau, so I thought I’d give BLP a go. I also changed my training/diet, lost 2 lbs a week, and kept muscle.

I take BLP with a coffee before morning fast cardio; I feel a bit more in the tank now—no side effects. I am usually sceptical, but it’s the real deal. Give it a try.”

Final Thoughts

Thermogenic fat burners are the best way to lose that excess weight. They are generally safe and effective and help you lose weight without too much struggle with everyday gym routines.

However, these are not magic pills and do not work instantly. They take time depending on various factors and your body. Remember to consult your doctor before coming to any weight loss program.

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David Williams

David Williams

A diet and fitness enthusiast, David is an ex-Army Airborne Ranger and Infantry soldier with decades of fitness and wellness experience. A West Point graduate with a degree in engineering, he focuses on technical research related to fitness, nutrition, and wellness. He loves the beach, and spending time with his wife and daughters.


  1. Jill Corleone, R. (2022a, March 24). Can white kidney bean extract help with weight loss?. Verywell Fit.
  2. WebMD. (n.d.-c). Capsicum: Overview, uses, side effects, precautions, interactions, dosing and reviews. WebMD.
  3. Chromium. The Nutrition Source. (2023, March 7).
  4. Capsaicinoids. Capsaicinoids – an overview | ScienceDirect Topics. (n.d.).
  5. MediLexicon International. (n.d.). Does forskolin work? uses, risks, and benefits. Medical News Today.