Supplements | Total Shape

What’s the Best Fat Burner for Men?
Reviews & Buyer’s Guide

Best Fat Burners Cover Image
Isaac Robertson
Written by Isaac Robertson

When some folks hear “fat burner,” they reject the notion outright.

Others have the opposite reaction and think of them as a kind of miracle pill that is going to generate weight loss while they eat pizza and watch the game.

The truth about fat burners, at least the top ones, lies somewhere in the middle. They’re neither a hoax nor a miracle.

What they can and will do is help you get the most from your weight loss efforts by increasing your metabolism, decreasing your appetite and attacking the fat stores you’ve so carefully constructed by eating all those pizzas.

​Below are the top fat burners for men on the market today based on our detailed research.

They are not miracle products, but they can help you achieve your weight loss and/or training goals.

Our Top Fat Burners For Men (October Updated)


​Supplement Facts

Key Features

Instant Knockout fat burner

#1 Instant Knockout
(Editor's Choice)

  • 1800mg ​Glucomannan (konjac root)
  • ​500mg Green Tea Extract (leaf)
  • ​300mg Caffeine Anhydrous
  • ​Made specifically for men to burn fat
  • ​Speeds up metabolism and calorie burn using thermogenesis
  • ​Enhances fat oxidation and increases insulin sensitivity
  • ​Reduces food cravings by giving you the feeling of having a full stomach
  • ​Get the ​BEST PRICE until the end of October
PhenQ Bottle

#2 PhenQ

  • ​150mg L-Carnitine Furmarate
  • ​142.5mg Caffeine Anhydrous
  • ​2​0mg Nopal
  • ​Boosts metabolism and thermogenic rates to speed up fat burning
  • ​Helps to prevent fat production
  • ​Boosts energy and improves overall mood
CrazyBulk Clenbutrol

#3 ​​CrazyBulk Clenbutrol​

  • ​450mg Garcinia Cambogia
  • ​450mg Bitter Orange Extract
  • ​342mg Guarana Extract
  • ​Effectively burns fat
  • ​Enhances cardiovascular performance
  • ​Converts stored fat into energy


  • 700mg Acetyl L-Carnitine HCI
  • ​450mg Green Tea Leaf Extract
  • ​270mg Caffeine Anhydrous
  • ​Burns fat while preserving lean muscle
  • Suppresses appetite
  • Improves overall mood and enhances focus

#5 Vintage Burn

  • 330mg Green Tea Leaf Extract
  • 270mg Green Coffee Bean Extract
  • 150mg Caffeine
  • Formulated to preserve muscle
  • Suppresses appetite
  • Improves mental focus, mood, and pre-workout energy

1. Editor's Choice:​​​​ Instant Knockout

Instant Knockout is produced by Roar Ambition and generates its fat burning effects by raising your metabolism 24 hours a day, not just when you’re working out.

Ever wonder why skinny people are skinny? It’s not because they don’t eat. 

Instant Knockout fat burner

Many of them eat like pigs. It’s because they have a naturally fast metabolism.

It seeks to replicate that through its use of metabolism boosting ingredients including caffeine and glucomannan along with green coffee bean extract, zinc, vitamins B6 and B12, and more.


  • Helps stimulates the metabolism.
  • Reduces food cravings.
  • ​Promotes thermogenesis.
  • ​Enhances your amount of available energy.


  • ​The gelatin capsules won’t agree with vegans.

The bottom line is that Instant Knockout won’t allow food to linger in your system and turn into fat stores.

Roar Ambition claims that during the first few weeks of use, as long as you continue to exercise and eat well, too, you’ll find some noticeable changes in your body you probably didn't see before. This is why a lot of people, including us consider it as the best fat burner for men.

​2. PhenQ Weight Loss Pills

There are a lot of snake oil type weight loss pills out there, and I’m always suspicious when I see new ones pop up.​

But, when I saw results achieved by a few friends of mine using PhenQ, I had to dig deeper.

Basically, the company focuses a lot on having created a unique blend of ingredients that you would normally only achieve by stacking multiple supplements. As a result, you get a number of benefits from one product at a lower price.

It also includes green coffee bean extract to boost energy and mediate blood glucose levels and CLA, which helps metabolize fat to energy.



  • ​Helps to boost fat burning metabolism to target stored body fat
  • ​Good appetite suppression reported by users
  • Helps reduce fat storage process
  • Helps boost physical and mental energy


  • ​Only available as pills not in powder form

Combine this with a healthy diet and some regular exercising, and you are likely to notice a difference in your appearance.

​3. CrazyBulk Clenbutrol

You’ll probably struggle to find a gym these days where you don’t see someone taking some sort of a CrazyBulk product. 

The company really has made a name for itself, and this Clenbutrol supplement is a very good example.

According to the creators, the ingredients chosen have been scientifically proven to boost thermogenic processes in your body.

CrazyBulk Clenbutrol

That fancy term basically means that your body will turn up the heat a little and in doing this will burn stored body fat.

It’s not a magic pill that will allow you to eat donuts all day and sit on the couch. But looking at user reviews, I did notice indications that it burns body fat with daily exercise.


  • Natural ingredients create a safe and legal product
  • Helps boosts thermogenic processes to burn more fat
  • Helps boost energy levels throughout the day
  • ​Gluten-free and no artificial additives.


  • ​Requires taking 3 capsules per day

As long your overall diet and exercise routine is healthy, you will see a faster weight loss progress. It’s also a good option for bodybuilders during a cutting cycle.


Burn XT takes a 3-pronged approach, unlike some of the other fat burners on the market that we would recommend.

The company that made it seeks to help boost energy levels, increase your metabolic rate and suppress your appetite. Does it work?

For the most part, it would be "yes." I could feel a noticeable boost in energy an hour after taking Burn XT.


And after eating, we did not seem to stay physically full as long as before, which is a sign your body is metabolizing food faster.


  • A reliable thermogenic fat burner.
  • ​No hinky ingredients hidden away.
  • ​No artificial preservatives, flavors or dyes.
  • ​Full money-back guarantee if not satisfied.


  • ​There were times when we felt a bit jittery.

Perhaps the one area where we weren't bowled over was appetite suppression, because we still were visited by hunger pangs and a desire to carb up from time to time. But then again, the decision to resist those pangs are still entirely up to you.

Savings starting at 10% this October

5. Vintage Burn

The makers of Vintage Burn are concerned that in some cases, ​pills like this can also be muscle burners.

The fact is, however, that most of the times when a person loses both fat and muscle it’s because they’re not exercising.

They’re just bombarding their system with these high quality fat burner supplements that also consume muscle tissue unless you do something (like exercise) to fend them off.

That said, the quest to create a pill that won’t touch your muscle tissue as well is a noble one.


  • May probably be the best fat burner for men.
  • Contains raspberry ketones.
  • Improves alertness and elevates mood.
  • More affordable than some alternatives.


  • Contains a fair amount of caffeine.

To do so, Vintage Burn utilizes two ingredients you don't find in most other products: raspberry ketones and chrysin. Raspberry ketones metabolize fat stores unlike anything else, and chrysin works effectively to preserve your muscle and help you retain an elevated metabolic rate, even while at rest.

6. Simply Health

Simply Health hits most of the right notes in its quest to be taken seriously as a world-class supplement.

The makers of this fat burner have done their homework -- and that's evident by the ingredient list that includes L-carnitine, garcinia cambogia, conjugated linolenic acid, and more.

All these ingredients work to either help raise your metabolic rate or attack stores or both and is said to have ample scientific evidence behind them to support their claims of effectiveness.

Simply Health

Simply Health is produced in an FDA certified facility that is regularly inspected to ensure it conforms to the exacting guidelines laid out by the Good Manufacturing Practices code.


  • ​Targets belly fat.
  • Helps increase metabolic rate.
  • ​Stymies appetite.
  • ​Made in the USA under strict guidelines.


  • ​Claims of appetite suppression may be exaggerated.

This is said to be a product of high purity that also happens to be reliable and easy to use.

7. Evlution Nutrition Trans4orm

Evlution’s Trans4orm has a very straightforward approach to fat loss and calorie burning:


It's an approach that has been proven effective for decades, but it's not one without risks that a more well-rounded approach can help you avoid.

That's not to say that Trans4orm is dangerous.

Evlution Nutrition Trans4orm

Just that its heavy reliance on synephrine and caffeine could be problematic for some folks; leaving them feeling a bit jittery and perhaps interfering with their ability to get to sleep.


  • Helps increase energy as advertised.
  • ​A valuable aid in the gym.
  • Helps improve focus and mental acuity.


  • ​Failing to workout is not a good idea.

That said, perhaps if you put all the extra energy Trans4orm is going to supply you in your workouts, you’ll likely be able to get to sleep just fine.

The problems arise when you don’t exercise and are essentially lying around with lots of static energy coursing through your body.

So, get up and make sure you work it off to burn fat and build muscle mass.

​What Is a Fat Burner?

fat burning pills

It is any drug, weight loss supplement or, for the purposes of this list, a pill that purports to assist your body in burning fat it would otherwise store. [1]

These are most effectively employed as part of an overall diet and exercise regime aimed at losing weight and building muscle.

Over the years there have been many types on the market, including so-called “diet pills” that were little more than straight amphetamines and were prone to be abused.

Natural weight loss supplements like the ones profiled above are a much safer yet equally effective way to reduce weight without risking addiction or other odious health issues.

​The term 'fat burner' is used to describe nutrition supplements that are claimed to acutely increase fat metabolism or energy expenditure, impair fat absorption, increase weight loss, increase fat oxidation during exercise, or somehow cause long-term adaptations that promote fat metabolism.

​PhD Nutrition

​How Does ​It Work?

There are three main approaches to fat loss and calorie burning.

Some employ them all while others focus on just one or two. Those approaches are:

  • ​Appetite Suppression - Appetite suppression is an important tool in the fat ​burners, and there are two principal ways it's accomplished. The first is by working to increase production of the hormones serotonin and dopamine while the second - and far more popular - is to simply fool your stomach into feeling full. The​ products above all take this latter approach.
slim waistline
  • ​Preventing Fat Absorption - The right combination of natural ingredients can help your digestive system metabolize fat as energy rather than storing it away for that rainy day that never comes. Raspberry ketones are an excellent example of this.
  • Speeds up metabolism - Most fat burners today does this in one way or another. Some use caffeine, while some use a variety of other ingredients like L-carnitine, garcinia cambogia and more. The goal is to make faster, more effective use of the food you eat.

You can also watch the video below which also explains how these fat loss pills work in the body.

​​Factors to Consider ​Before Buying Fat Burning Pills

Each is different, but in general you'll want to look for these things in your fat burning or weight loss supplements.

  • Proven ingredients - You’ll want to see some or all of these on the ingredient list: green tea extract, caffeine, yohimbine, cayenne pepper, black pepper extract, green coffee bean extract, and more including raspberry ketones and Garcinia Cambogia.
  • ​Amount of caffeine - Make no mistake, caffeine is the most effective natural stimulant ever discovered and can undoubtedly help you burn more fat. The thing with caffeine is that it works so good it’s easy to use too much and lie awake all night. Check the caffeine content.
nutrition facts
  • The brand - Some companies have been producing high-quality fat burners and weight loss supplements for years while others have only recently appeared on the scene and don't have a proven record to back them up. Do your research on little-known brands before deciding to use them.
  • ​Overall value - Some fat burners are going to cost substantially more than others, so if you're on a budget, you'll want to keep that in mind. There are some out there that are both effective and affordable, such as Instant Knockout.

​​Natural ​Ingredients For ​Weight Loss

natural fat and calorie burner

It is important to know some of the natural weight loss agents that can be found in your fat burner and weight loss supplements. Here are some of those ingredients:

  • Caffeine - Caffeine is the grandaddy of fat burning ingredients that stimulates the metabolism while lighting a fire under your energy levels. Oldest and still number one.
  • Green tea extract - is known to boost the metabolism and prevent fat absorption. It won't give you a kick like caffeine, but green tea extract will go to work on your body.
  • Protein powder - A diet that is high in protein and low in carbs has been shown to be great at burning fat. Just be sure to look for balance in this type of diet.
  • ​Soluble fiber - Soluble fiber helps curb your appetite by combining with water in the digestive tract and making you feel fuller than you are. When you eat less your body seeks energy from fat, and you lose weight.
  • Yohimbine - Yohimbine blocks the body's alpha 2 adrenergic receptors thereby freeing up adrenaline stores and providing you an energy boost. The more energy you exert, the more fat you'll burn.

​Are There Potential Side Effects?

There are a lot of myths and rumors swirling around about these ​fat burners. The fact is that the vast majority are perfectly safe and produce no side effects in most of the people who take them.

​But that's not to say they are entirely risk-free; rather, the risks have just been blown out of proportion in some circles.

​Fat burners are basically safe although you should be aware of the following:

  • ​Those with weak or compromised cardiovascular systems may put undue stress on their heart by consuming some of the stimulants used in fat burning products. While these people are the exception, the risk cannot simply be swept under the rug. Consult your doctor before using this type of product just to be sure.
  • ​Some folks will experience mood swings, and, if too much caffeine is taken with no exercise program to help burn off the excess energy, they may become more aggressive than they typically are. Avoid this by making sure you exercise.
woman on weighing scale
  • ​Some people have allergic reactions to certain ingredients. If you have any doubts about whether the ingredients in a particular ​supplement are right for you, consult your doctor before taking them.
  • Finally, some people complain that certain stimulants used to kickstart the metabolism give them an upset stomach. Caffeine will certainly do this to some folks with sensitive systems. If it happens to you, adviced is to try a different products that doesn’t rely so heavily on caffeine. There are plenty out there.


Do fat burners help lose belly fat?

Yes, fat burners can help you lose belly fat, and will actually target pretty much any fat storage area in your body. Many of the common ingredients that have thermogenic effects will actually target belly fat more effectively, which can help with getting that ripped belly you’ve always been looking for.

Are fat burner pills safe?

Yes, fat burner pills are safe, as long as you stick with the recommended dose and avoid overstimulation you shouldn’t see any problems in the line of side effects. The most common ingredients are all naturally sourced and provided in a concentration that is safe for all athletes.

How long can you stay on fat burners?

You can stay on fat burners for about 8 to 12 weeks at a time before you should consider an off-cycle. The reason you should plan regular cycles like this is that your body can become used to the active ingredients making them less effective. Most serious bodybuilders will actually reduce that time to just a few weeks of a cutting phase.

Our #1 Fat Burner For Men Is...

The best fat burners for men today is a far cry from the amphetamine-heavy diet pills of old. The natural supplements profiled above use nature’s own ingredients to approach the challenge of stimulating fat loss and one that does the better job is Instant Knockout.

It contains the essential ingredients you want to see in ​the best fat burner and also includes vitamins B6 and B12 to help you glean more energy from the food you eat.

It helps curb the appetite, provides a good amount of energy boost to power your workouts and reduces the cravings that often undermine fat burning efforts.

Some of its users are not even afraid to flaunt their bodies online to show how effective Instant Knockout is. You be the judge of that! (1)

Instant Knockout Testimonial Photo
Instant Knockout Testimonial Photo

If we had to recommend just one product from the above list as the most dependable fat burner pills, it would have to be this one. 

​​Instant Knockout
Our #1 ​Fat Burner

  • ​Thermogenesis enhances metabolism and calorie burn
  • ​Fat oxidation and insulin sensitivity are greatly improved
  • check
    Experience reduced cravings; have a feeling of a full stomach
  • check
    ​Be energized for high-intensity workouts
  • check
    ​Recommended to be taken four times a day for best results
  • ​Get the BEST PRICE until the end of October

Did you enjoy this article? You may also like to check out this post on the best fat burners for women here.

About the author

Isaac Robertson

Isaac Robertson

I’m a personal fitness trainer and nutritionist living in sunny Indianapolis, IN. I’ve spent the last 8 years staying at the forefront of the health and fitness industry. In that time, I’ve helped hundreds of people shed the excess weight and get into shape, maintaining their healthy new lifestyle through proper training and eating habits. You can read more about me here​.

  • I’ve tried your #1 and #3 recommendation and I liked Instant Knockout more because I lost more weight. These pills are definitely the best thermogenic fat burner for men (not sure for the ladies tho)

  • >