Top 10 Fat Burners for Men – Best of 2019 Reviewed

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In order to help you find a good men’s weight loss product, we’ve narrowed down the best burners for men on the market right now.

List of the Best Fat Burners for Men

1. Instant Knockout

Instant Knockout fat burner

Instant Knockout is our pick for the best fat burner this year. From what we’ve seen it tops just about every list of fat burners and best natural fat burners for men out there.

Originally designed for MMA fighters, this product has the fat-destroying ingredients you need to reach your fitness goals, and build the body of your dreams!

Uses cutting-edge natural ingredients and well-dosed serving sizes, we were impressed with Instant Knockout’s impressive showing.


  • Sculpts out that chiseled physique – Emphasizes definition and shapes your muscles
  • Get that ‘finished’ six pack look – Lean out around your torso and tighten your abs
  • Train for longer – Have more energy and stamina in the gym
  • Keep on with your cut – Crave less ‘cheat’ foods and stay on your diet
  • Lose fat quicker – Notice faster results with the training
  • Endorsed by MMA Fighters – Used by professionals to cut weight for competitions
  • 90 day guarantee – On selected offers

How it works:

  • All natural ingredients – Performs effective fat loss
  • Increases metabolic rate – Burn more calories
  • Engages Thermogenesis – Lose fat even when resting
  • Servings throughout the day– Round the clock fat burning
  • Backed by clinical studies – Contains clinically proven ingredients
  • No Proprietary Blends – You know exactly how much of each ingredient is used

Package Deals:

  • 1 month supply – 1 Box
  • 2 month supply – 2 Boxes + FREE Delivery (USA & UK)
  • 3 month supply – 3 Boxes + 1 FREE Box + FREE Delivery (Worldwide) + Free T-Shirt + 90 DAY GUARANTEE

Ingredients: One serving contains:

  • 500mg Green Tea Extract – A potent thermogenic proven to increase your metabolic rate. This natural ingredient promotes fat loss by improving your metabolism and provides your body with the energy it needs to perform at its best.
  • 100mg Cayenne Pepper – A hot chili pepper containing capsaicin, an ingredient known to increase body temperature. This increase in temperature makes your body work harder to cool itself down, a process that burns calories and helps you shed unwanted pounds.
  • 1800mg Glucomannan – A high fiber compound that swells in your stomach to suppress hunger
  • 7 additional natural ingredients, including vitamins B6 and B12, chromium, green coffee bean, zinc, piperine, and caffeine anhydrous. This potent blend of all-natural ingredients helps your body burn more calories, perform better, increase metabolism, and drop more fat.

Who makes it: Instant Knockout is made by premium supplements company Roar Ambition. Based in the UK, Roar Ambition constantly revises the formula of Instant Knockout to ensure it’s an industry leader. It is one of the most premium fat burners on the market, and is only old through the official website – which helps keep quality up and prices down.

Bottom Line: No matter what your weight loss goals are, Instant Knockout can help. And, if for some reason the product doesn’t work for you, you can get a full refund with the 90-day money-back guarantee.

Full Breakdown: Instant Knockout Review

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Where to Get It

2. Transparent Labs Fat Burner

Transparent Labs Physiqueseries Fat Burner

Fat Burner, by Transparent Labs, is also one of the best fat burners this year. From all of our research, it’s been ranked very highly on fat burner lists. Originally, it was designed to be the most “Transparent” fat burner formula on the market, as it comes from the rapidly growing product suite from Transparent Labs. Known for their “open formulas”.


  • Money Back Guarantee – Unhappy with your results? No problem. They’re so confident in your results, that they offer an easy refund process, no questions asked!
  • Clinically Effective Dosages: Every ingredient in Fat Burner contains the specific dosages deemed effective for fat loss, based on publicly available research.
  • 100% Formula Transparency: Transparent Labs doesn’t believe in proprietary blends and provides individual ingredient dosages all the way down to the “other ingredients” section.
  • Zero Artificial Sweeteners, Food Dyes, or Harmful Additives: Fat Burner is one of the cleanest formulas we’ve ever seen and contains no fillers, whatsoever.
  • Scientific Research Provided: Transparent Labs references every single scientific study that they used to influence Fat Burner’s premium formula.
  • Increases Basal Metabolic Rate: Fat Burner helps to increase your body’s BMR by using science-based ingredients at clinically effective ingredients. With synergistic effects between its ingredients, Fat Burner helps to expend more energy (through caloric burn) throughout the day.
  • Prevent Hunger Cravings: Several of the ingredients used in Fat Burner are designed to prevent those unhealthy hunger cravings that often sideline fat loss progress. By increasing the sensation of fullness, Fat Burner is perfect for daily use by eliminating many of the harmful foods and “snacks” that work against your goals.
  • Creates an Enjoyable Weight Loss Lifestyle: By avoiding “crash diets” and “magic bullet” fat-burning pills, Fat Burner is a simple, natural, clean, and convenient way to re-design your fat loss lifestyle centered around proper nutrition and effective supplementation.
  • Ships Worldwide!

Package Deals:

  • 1-Month Supply
  • 2-Month Supply: Save $9 + Money Back Guarantee
  • 3-Month Supply: Save $28 + Money Back Guarantee

Ingredients: Each serving (only 2 capsules) of Fat Burner contains:

  • 500 mg of Forslean (Forskolin): Helps to stimulate the release of fatty acids from stubborn adipose (fat) tissue. Forslean is the highest quality extract with countless high-profile clinical studies demonstrating Forslean’s ability to increase fat loss.
  • 400 mg of Green Tea (EGCG): Green Tea has one of the longest (and most proven) histories of beneficial effects towards fat loss. It’s used primarily to stimulate fat metabolism (by breaking down fat cells).
  • 300 mg of 5-HTP: A natural intermediate in the metabolism of serotonin and tryptophan that is used to effectively reduce appetite and hunger cravings.
  • 300 mg of L-Tyrosine: A potent anti-stress amino acid that helps to increase mood while dieting. It also helps to reduce mental and physical stress associated with poor sleep and physical performance.
  • 240 mg of L-Theanine: Works synergistically with Caffeine and Green Tea EGCG to reduce blood pressure and jitters commonly associated with fat burners.
  • 120 mg of Caffeine Anhydrous: The purest form of Caffeine, which is used to increase clean energy throughout the day. Its thermogenic effects help to burn unwanted calories daily (even while you’re sleeping).
  • 120 mg of Salicin: Helps to potentiate the thermogenic effects of Synephrine HCl.
  • 100 mg of Cayenne Pepper Extract: A premium fat burning ingredient that contains capsaicinoids, which help to support weight loss through increased thermogenesis and lipolysis (fat loss).
  • 50 mg of Synephrine HCl: A potent and unique fat burning ingredient that has been shown to demonstrate an effective means of fat loss by increasing the body’s resting metabolic rate.

Why It Works:

  • Science-Based Ingredients: All of Fat Burner’s ingredients are backed by scientific research (listed on each product page for easy readability).
  • Clinically Effective Dosages: Every ingredient in Fat Burner contains the specific dosages deemed effective for fat loss, based on publicly available research.
  • 100% Formula Transparency: Transparent Labs doesn’t believe in proprietary blends and provides individual ingredient dosages all the way down to the “other ingredients” section.
  • Zero Artificial Sweeteners, Food Dyes, or Harmful Additives: Fat Burner is one of the cleanest formulas we’ve ever seen and contains no fillers, whatsoever.
  • Scientific Research Provided: Transparent Labs references every single scientific study that they used to influence Fat Burner’s premium formula.
  • Science-Based Fat Loss: Transparent Labs only includes ingredients that have been scientifically proven to induce healthy fat loss

Who Makes It: Fat Burner is made by Transparent Labs! As one of the most exciting supplement brands, Transparent Labs products are only available through their website, which helps you to save a tremendous amount of money typically charged by your local supplement shop. Keep an eye on Transparent Labs this year, as we’ve heard they’ve got some very exciting new products on the way!

Bottom Line: TLabs Fat Burner is a quality product, which, when combine with proper nutrition and exercise can help you reach some of your weight loss goals. Also, just in case you’re intolerant to stimulants, Transparent Labs also offers an awesome stimulant-free fat burner as well!

Full Breakdown: TL Fat Burner Review

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Where to Get It

3. Hydroxycut Hardcore Next Gen

Hydroxycut Hardcore Next Gen

Hydroxycut Hardcore Next Gen is the latest product in the popular Hydroxycut line. It’s one of the most popular fat burners ever. Combining several potent ingredients to target the various aspects of fat loss, Hydroxycut Hardcore Next Gen can help provide the edge you need to succeed in your fitness goals.


  • Affordable
  • Convenient
  • Activates thermogenesis
  • Can provide more energy for your day

Ingredients: One serving contains:

  • 400mg green coffee blend
  • 290mg caffeine anhydrous, which is  known to increase energy.
  • 100mg coleus extract
  • 4 additional extracts and herbs, including guayusa, blue skullcap, ophiopogon extract, and yohimbe.

Who makes it: Hydroxycut Hardcore Next Gen is made by MuscleTech, one of the big players in the supplement industry. In business for over 20 years, MuscleTech has worked hard to develop a reputation of quality, innovative products and affordable prices. With a wide range of products and a huge fan base, it’s no secret that MuscleTech is one of the better companies out there.

Bottom Line: Hydroxycut Hardcore Next Gen is a good fat burner for men. These weight loss pills are convenient and affordable and have been around for a long time.

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Where to Get It

4. Cellucor Super HD


Cellucor Super HD is one of the top rated fat burners on the market, providing the tools you need to reach your goals.


  • Includes powerful nootropics
  • Affordable
  • Very convenient – just 2 capsules each day

Ingredients: One serving contains:

  • 250mg SuperHD ThermoSculpting blend, consisting of dandelion root extract, green tea extract, and blue whiting.
  • 250mg SuperHD Sensory Impact blend, consisting of cayenne, tyrosine, rhodiola root extract, yohimbe, and more.

Who makes it: Super HD is made by Cellucor, a Texas-based supplement manufacturer. Founded in 2002, Cellucor has grown into a dominant force in the supplement industry. With a huge line of popular products (best known for their C4 line of pre-workout supplements), a loyal following of fans, and a number of industry awards, it’s no surprise that Cellucor is so well respected.

Bottom Line: Super HD is a great product containing some of the best diet pills that work well by targeting the various aspects that are important to fat loss. With only 2 capsules needed per day (compared to 4-6+ with other products), Super HD is also very convenient. Lastly, the backing of a respectable company like Cellucor makes this product one of our top recommendations.

Full Breakdown: Cellucor Super HD Review

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Where to Get It

5. Hydroxycut Hardcore Elite


Hydroxycut Hardcore Elite is a great product, offering some of the most high quality fat burning pills on the market. Hardcore Elite contains ingredients to target the most important aspects of fat burning: metabolism, thermogenesis, energy and more. All wrapped up in one convenient package, this product provides an easy way to increase your fat burning potential.


  • Complete disclosure – every ingredient is listed in detail
  • Easy and convenient to take (capsules)
  • Affordable


  • No appetite suppression ingredients included

Ingredients: One serving contains:

  • 270mg caffeine anhydrous, which is a caffeine content equivalent to about 2-3 cups of coffee.
  • 250mg coleus forskohlii
  • 200mg C. canephora robusta (green coffee extract)
  • 100mg L-theanine
  • 3mg yohimbe

Who makes it: Hydroxycut Hardcore Elite is manufactured by MuscleTech. As one of the biggest and best companies in the industry, MuscleTech has earned the respect of fitness experts and everyday people alike. Throughout their 20+ years in business, MuscleTech has set the standards for quality in an industry full of questionable quality standards.

Bottom Line: Hydroxycut Hardcore Elite is a great men’s fat burner. It contains potent ingredients to help you on your path to a better body. Unfortunately, it does not contain any hunger suppression ingredients, which can be a downside for some people who have difficulty sticking to their diets.

Full Breakdown: Hydroxycut Hardcore Elite Review

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Where to Get It

6. Jym Shred by Jym Stoppani

Jym Shred

Shred JYM is a powerful fat burner for men made by the legendary Jym Stoppani, a bodybuilder and PhD. This product contains 6 researched-backed ingredients, featured in proper dosages to actually be effective. Everything Shred JYM contains is clearly listed on the label, and it does not use proprietary blends or any sort of fillers.


  • 6 research-backed ingredients at adequate dosages for performance
  • 1,500mg acetyl-L-carnitine
  • 500mg green tea extract
  • 200mg caffeine
  • 500mg L-tyrosine
  • 50mg cayenne pepper
  • 20mg synephrine
  • All ingredients clearly listed (NO proprietary blends)
  • Trusted manufacturer
  • Good reviews

Who Makes It: Shred JYM is made by JYM Supplement Science. The company is the brainchild of Jim Stoppani, a legendary bodybuilder and PhD of exercise physiology. For over a decade, JYM Supplement Science has been formulating and manufacturing high quality fitness supplements using only research-backed ingredients. They are also proud to use no proprietary blends, so every ingredient and dosage amount is clearly listed on the label.

Bottom Line: Overall, this is a top fat burner for men that’s made by a trusted company. It includes a simple yet highly effective formula that utilizes only 6 ingredients that are backed by legitimate clinical science. It requires a relatively high dosage of 6 capsules, simply because it packs a lot of active ingredients into each dose.

Full Breakdown: Shred Jym Review

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Where to Get It

7. Lean Mode by EVLution Nutrition

Lean Mode By Evlution Nutrition

Lean Mode is a stim-free fat burner from EVLution Nutrition. Because it’s caffeine-free, Lean Mode is a good weight loss supplement for men looking to avoid stimulants. And since it contains ingredients to target the 5 most important aspects of fat loss, Lean Mode is a good option for anyone hoping to drop a few pounds.


  • Caffeine free
  • Stimulant free
  • Affordable
  • Comes from an award-winning company


  • Large doses – requires 3 capsules 1-2 times each day

Ingredients: One serving contains:

  • 500mg garcinia cambogia extract
  • 500mg green coffee bean extract (decaffeinated)
  • 500mg CLA
  • 500mg carnitine, which can help to improve athletic performance and support energy levels.
  • 250mg green tea extract (decaffeinated)

Who makes it: Lean Mode comes from EVL Nutrition, a relative newcomer to the industry. Founded in 2013, EVL Nutrition won’s “Breakout Brand of the Year” award, and has gone on to develop a large following of fans and customers. In just a few years, they’ve developed an impressive catalogue of effective and affordable products.

Bottom Line: EVL Nutrition Lean Mode is a solid fat burner for men looking for a stimulant-free option. By targeting the 5 most important aspects of weight loss, Lean Mode provides all the tools needed for your body to kick the fat-burning into high-gear – without the high levels of caffeine that can cause side effects in some people.

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Where to Get It

8. Nutrex Lipo-6 Black Ultra Concentrate

Nutrex Lipo 6 Black Ultra Concentrate

Nutrex Lipo-6 Black Ultra Concentrate is a so called “Intelligent Fat Destroyer” that targets various aspects of fat loss. Combining a powerful fat burning compound with ingredients to help cleanse and reprogram fat receptors, Lipo-6 Black is a very unique and innovative product.


  • Powerful fat burning compound
  • Contains ingredients to help cleanse and reprogram fat receptors
  • Designed for men
  • Unique 3-stage system
  • Convenient with only 1 capsule twice a day
  • May help increases energy
  • 200mg caffeine per serving

Ingredients: One serving contains:

  • 5mg ultra concentrated fat destroying complex, consisting of theobromine anhydrous, caffeine anhydrous, yohimbine and more.

Who makes it: Lipo-6 Black Ultra Concentrate is manufactured by Nutrex Research. Since 2002, Nutrex has been hard at work developing unique new fitness supplements to suit the needs of the growing fitness community. Nutrex has grown quickly, and released a number of interesting supplements.

Bottom Line: Lipo-6 Black Ultra Concentrate is a good product. It contains some unique ingredients not found in other products, but many of those ingredients are not widely studied. It’s effective for many people, but it is a bit on the expensive side.

Full Breakdown: Lipo-6 Black Ultra Concentrate Review

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Where to Get It

9. Old School Labs Vintage Burn

Old School Labs Vintage Burn

Vintage Burn Fat Burner from Old School Labs is ‘the world’s first muscle-preserving fat burner’. It’s designed to burn maximum fat, without sacrificing lean muscle. Vintage Burn is a fast-acting fat burner that helps to stimulate metabolism, as well as improving focus, to help you to achieve your fat-loss goals in record time, without sacrificing that lean muscle you’ve worked so hard to gain.


  • Helps you to burn maximum fat without sacrificing lean muscle mass
  • Improves focus and mood
  • All-natural ingredients
  • Made using on the highest-quality raw ingredients
  • Military discount available
  • Student discount available
  • Save 15% with a monthly subscription

Ingredients: One serving (2 capsules) contains:

  • 300mg Green Tea Leaf Extract per serving – increases resting metabolic rate, helping you to burn more calories even at rest.
  • 270mg Green Coffee Bean Extract – a natural stimulant that increases focus and also acts to reduce the absorption of fats and sugars from food.
  • 200mg Rasberry Ketones – thought to control appetite, helping you to feel satisfied between meals
  • 130mg Balcopa Leaf Extract – works against the effects of dieting on your metabolism, the help burn calories as fast as possible
  • 100mg Garcinia Fruit Extract – helps to prevent the formation and storage of new fat cells, as well as moderating carb-cravings, making it easier for you to stick to your diet
  • 100mg Chrysin – protects precious lean muscle during diet phases, by ensuring that oestrogen levels in the body remain optimal
  • 60mg Forskohlii Root Extract – targets stored fat for breakdown

Who makes it: Vintage Burn Fat Burner is made by Old School Labs, a California-based nutritional company with a fantastic reputation. Old School Labs is one of the fastest-growing sports-supplements brand on

Bottom Line: Vintage Burn Fat Burner is a fast-acting, effective fat burner made from the highest quality, all-natural ingredients. If you’re looking to lose fat fast, without sacrificing your hard-earned lean muscle, then Old School Labs Vintage Burn is the Fat Burner for you! Try it today!

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Where to Get It

10. MusclePharm Shred Sport Thermogenic Complex

Musclepharm Shred Sport Thermogenic Complex

MusclePharm’s Shred Sport Thermogenic Complex is a fat-burning powerhouse that will help you to get shredded in record time. It is designed to target stored body fat, boost metabolism and regulate hunger, helping you to get lean and stay lean. With just two capsules twice a day, you’ll instantly feel more alert and see that fat melting away.


  • 125mg ‘Capsimax’ powerful Capsicum extract per serving, helps to boost your metabolism
  • 50mg Teacrine per serving can help you to burn more calories and moderate hunger
  • 200mg caffeine to give you a physical and mental boost, helping to work harder and burn more fat during each workout
  • 500mg L-Carnitine for targeted fat-burning and increased energy
  • Great value
  • Rave reviews from customers worldwide
  • Fast, efficient shipping

Ingredients: One serving (2 capsules) contains:

  • 125mg Capsimax – capsimax is made from capsicum extract, a powerful thermogenic fat burner that increases core body temperature, stimulating metabolism and increasing calorie burn
  • 50mg Teacrine – made from theacrine, a natural stimulant that is thought to boost metabolism, accelerate calorie burn and increase power output during a workout.
  • 200mg Caffeine – this powerful stimulant works with Teacrine to boost metabolism, improve athletic performance and stimulate fat-loss.
  • 500mg L-Carnitine – this naturally-occurring amino acid is important for optimal metabolic function and stores can be depleted by intense exercise.
  • Additional all-natural ingredients including dandelion root extract, brown seaweed extract, niacin and vitamins B-6 and B-12 to provide your body with everything is needs to become a fat-burning powerhouse.

Who makes it: Shred Sport Thermogenic Complex is made by MusclePharm, a US company with nearly a decade of experience in providing the highest-quality nutritional supplements to clients all over the world.

Bottom Line: Shred Sport Thermogenic Complex is the perfect supplement for anyone looking to reduce body fat and get lean quick. The powerful combination of all-natural ingredients is great value and will help you to achieve your weight-loss goals in no time.

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Where to Get It

Frequently Asked Questions About Men’s Fat Burners

What is a Fat Burner?

Fat burners are formulated to provide you with the extra energy you need to start seeing results, quickly.

While diet and exercise are the most important factors in weight loss, supplementation can also sometimes be beneficial.

Standard daily men’s multivitamins, protein powders, etc. are all important, but when it comes to shedding those excess pounds, nothing can help more than a good weight loss product.

In essence, fat burners are supplements developed to aid in fat loss.

Keyword being: aid.

Fat burners will NOT do the hard work for you.

Usually found in pill or capsule form, fat burners are generally taken in intervals throughout the day. They provide an array of benefits, and are designed to help increase your body’s fat burning potential.

The highest quality fat burners target various aspects of weight loss.

First, they aim to increase your metabolic rate, which helps you burn more calories during both exercise and typical daily activities (1).

Second, they aim to increase your energy levels, which helps you increase the intensity and duration of your workouts, leading to greater results.

Lastly, many fat burners that work well include ingredients meant to help you control cravings, which keeps calorie-dense, fattening foods out of your diet.

Remember, while these supplements have the potential to help you lose some weight, they’re meant to be used in combination with regular exercise and proper nutrition.

Fat burners can help you lose weight, but they can’t do all the work for you!

How Does a Fat Burner Work?

Most fat burning supplements use a combination of ingredients to create potent blends to help battle fat.

There are many ingredients used, and each product will vary slightly in contents and dosages, but here are some of the more common types of ingredients that may help your weight loss goals:

  • Stimulants

Stimulants are usually a main element of weight loss supplements and pre-workout supplements.

Green tea extract, green coffee extract, guarana and caffeine anhydrous are the most common.

  • Appetite suppressants

Ingredients like yerba mate, glucomannan, hoodia gordonii and other herbs are often added to act as appetite suppressants.

Depending on your snacking habits and daily diet, these ingredients may or may not be necessary for you.

  • Dietary fiber

Some fat burners include added dietary fiber. It helps to normalize bowel movements, help bowel health, and more (2).

  • Fat burning herbs and extracts

Ingredients like cayenne pepper, coleus forskohlii and capsaicin are added to help increase thermogenesis, which helps burns more calories.

Vitamins, zinc, yohimbe, and more are sometimes added to increase energy and promote overall well-being.

There are, of course, other ingredients included in the various weight loss pills. The ingredients above are the most common, and often the most studied.

What Are the Benefits of a Fat Burner?

Men’s fat burners are designed to help aid weight loss efforts and increase fat burning. While they are marketed towards men, they typically contain ingredients that could be useful for either gender.

In general, many claims by fat burner marketers are overblown – but, some ingredients used do have legitimate potential to help with weight loss.

Each formula uses different ingredients, but generally speaking these products seek to address the following aspects of weight loss:

Thermogenesis Activation

Thermogenesis is a basic metabolic process in your body that helps convert calories into heat. It’s a natural process that’s always happening (3).

Some ingredients in fat burners aim to increase thermogenesis – although they are not all proven to do so. There are also some products that are specifically made with thermogensis in mind, they are known as thermogenic fat burners.

Cayenne pepper and other capsaicin-containing ingredients can induce thermogenesis while also potentially promoting fat oxidation (4, 5).

Stimulants including caffeine can also help to increase thermogenesis in healthy individuals (6).

Forskolin is thought to affect thermogenesis by activating cyclic AMP (7).

All these ingredients may have a relatively minor effect on thermogenesis, but in theory this could result in more calories burned each day. More research is needed for some ingredients.

Metabolism Boost

The metabolism is our body’s method of converting food into usable energy. There are differences in metabolic rates for men and women (8).

Some fat burning ingredients claim to improve the metabolism.

Many of these claims are overblown, but some do have clinical evidence.

Stimulants appear to affect the metabolism, with caffeine in particular showing promise in clinical trials (9).

Chili peppers (capsaicin/cayenne pepper are often included ingredients) have been shown to boost the metabolic rate – although this study looked specifically at women (10).

Dihydrocapsiate, another compound in chili peppers, resulted in 50 extra calories burned each day in one research study, a small thermogenic effect (11).

Green tea extract is thought to also have an impact on fat metabolism (12). More research is needed.


Lipolysis is the process of breaking down fats and other lipids to release fatty acids (13). The process is important to mobilize stored fat tissues.

When combined with exercise and/or caloric restriction, lipolysis may help contribute to weight loss and fat burning.

Multiple ingredients included in fat burners aim to effect lipolysis.

Stimulants like caffeine have been found to increase levels of epinephrine in the blood, which is thought to signals the breakdown of fat into the bloodstream into the bloodstream (14, 15).

Capsaicin may also play a role in lipolysis (16).

Other ingredients could affect lipolysis as well, but more research is needed.

Energy Source

Energy is essential for our daily tasks. Having more energy can make it easier to exercise more, and therefore burn more fat.

Because of this, many popular fat burners for men include ingredients designed to boost energy levels.

Most of these ingredients are stimulants.

Caffeine anhydrous, green coffee berry extract, green tea extract and guarana are some of the most common stimulants used.

Caffeine increases the release of dopamine by blocking a neurotransmitter called adenosine, which helps you feel more energized and awake (17). It can also improve exercise performance and endurance (18).

There are also stimulant-free ingredients that claim to boost energy – but these claims are largely unproven.

Appetite Suppressant

Regulating your appetite and avoiding empty calories is an important part of the weight loss process.

Some fat burners include ingredients designed to suppress the appetite, theoretically making the dieting process easier.

Gluconnaman is a popular addition. In one study, this soluble fiber resulted in increases in weight loss over diet alone (19).

Caffeine and other stimulants may also have appetite-suppressing properties, although the effect is usually short-lived (20).

A good fat burner will address multiple aspects of the weight loss process. However, these products will not have any benefit if you’re not also eating a healthy diet and exercising frequently.

Fat burners are designed to supplement a healthy lifestyle, not replace it.

Note: Results are not guaranteed.

Who Can Benefit From a Fat Burner?

A wide range of people can experience benefits from these supplements, but below you’ll find the groups of people who can benefit the most:

  • Men of all ages – Pretty much anyone over 18 who wants to drop a few pounds may benefit from taking a fat burner. These supplements aid your body’s natural abilities to burn fat, so they simply make the process easier for you. Whether you’re looking to lose significant weight or just burn off some holiday fat, adding supplements to your diet may provide some help.
  • Weightlifters – Weightlifters, bodybuilders and fitness enthusiasts can greatly benefit from these products. Because of the higher-than-average calorie and nutrient needs of regular trainers, it can be easy to put on some extra fat while you’re building muscle. By adding a weight loss supplement, you can get that toned definition you’re after, without sacrificing your muscles.
  • Trainers during “cut” cycles – If you follow a traditional bulk/cut training schedule, fat burners can be a huge advantage during cutting cycles. The bulk and cut cycle consists of “bulking” or eating more and lifting heavy, followed by “cutting”, where calorie intake is limited in an effort to tone up.
  • Aging men – As our bodies age, our metabolism slows down and our testosterone levels start dropping. It’s unfortunate, but it’s just the way it works! If you’ve noticed that you’re putting on weight and you haven’t changed your diet or exercise habits, it may be that your metabolism is slowing down. If so, adding a fat burner or testosterone booster can potentially help you get back on track and stay in shape!

Note: We do not recommend you take ANY supplements featured on this site without consulting a doctor first.

How Do I Pick a Good Fat Burner?

Because there are so many options, finding the best fat burners can be difficult.

We recommend reading fat burner reviews to help answer your questions about these products, and determine which ones are worth taking.

Here is a list of some of the things you should keep an eye on when choosing a product.

  • Ingredients – the first thing you should take a close look at is the ingredient label. What ingredients does the product include? Does it contain ingredients that are proven to help you lose weight? Also, keep an eye on the amounts of the various ingredients.
  • Brand reputation – have you heard of the brand/company who makes the product? Are they reputable, and known for making quality products? In our list (found above), we only included products from quality companies – but there are certainly low quality products out there. Especially if you’re doing your own research, read through some fat burner reviews to determine the quality of the product and the company behind it.
  • Value for money – whether you’re on a strict budget or not, it’s always a good idea to compare prices. Because dosage and package size vary, you should always compare the per serving or per day price of each product you’re considering. Steer clear of cheap fat burners, as they are usually lower quality, but find an item within your price range.
  • Caffeine content – take a look at the amount of caffeine in each serving. This is especially important if you’re sensitive to stimulants. Keep in mind that a typical cup of coffee has 95-200mg of caffeine, so you can use that figure to compare (21).
  • Convenience factor – in order for the product to work, you’ll need to take it as recommended. Most diet supplements require 2 or more servings per day, while others require 3, 4, or even more. Consider the convenience factor when choosing a product – twice a day isn’t bad, but 4x a day can become inconvenient.

Are There Any Side Effects of a Fat Burner?

Just about every supplement out there has some potential side effects.

Fat burners come in all shapes and sizes – some completely natural, with little or no side effects, and some more experimental that could have more unwanted side effects.

Since every product uses different ingredients, side effects may vary – but here are some of the most common side effects.

  • Trouble sleeping

The vast majority of weight loss supplements contain caffeine and/or other stimulants. If taken late in the day, these ingredients can cause difficulty falling asleep at night. To combat this side effect, simply treat fat burners like caffeinated beverages – don’t consume them in the late afternoon or evening.

  • Dehydration

Another common side-effect of stimulant-based fat burners is dehydration. An increase in thermogenesis means an increase in body temperature.

Your body will use more water than usual to cool itself down, which means you need to drink enough water to stay hydrated.

Remember: NEVER take more than the recommended dosage of ANY supplement, including fat burners. Taking more than is recommended can result in more severe side effects.

As with all supplements featured on this site, we recommend you speak with your doctor before taking any supplements.


I think we can all agree that losing weight can sometimes be one of the hardest things to do, especially if you’re a grown man with a busy lifestyle.

Sometimes you simply can’t find the time needed to go through all the necessary steps needed to start shedding pounds fast.

The main aspects of staying fit are maintaining your diet and ensuring you get enough exercise. As for diet, you can read all about the official dietary guidelines to get a better idea of how to keep your diet on track.

But seriously, how do you find the time to meal prep, get to the gym, workout for an hour or two, shower, drive home and still have enough energy for the rest of your responsibilities?

Luckily, there are products that exist that were designed to give men an extra boost in their weight loss journey.

Fat burners sometimes get a bad rap because of extravagant claims by shady companies. But not all fat burning products are the same, and with proper nutrition and exercise they can definitely aid you in your goals.

Instant Knockout Fat Burner is this year’s top fat burner.

We hope we have provided you with a little more knowledge on what fat burners for men are, how they’ll help, how they work and which ones are the best. Let us know how we did below!

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Austin Meadows

Written by Austin Meadows

Austin Meadows is an independent writer and consultant specializing in health and wellness topics. With more than 7 years of experience writing in the natural health industry, Austin strives to deliver accurate, concise and research based information to his readers.