Losing excess weight and keeping it off is one of the most challenging things to attain for both men and women.

Often, some people will manage to lose weight by taking on an exercise regime and incorporating healthy eating.

Unfortunately, this may not work for everyone, causing people to look for alternative methods of losing excess weight.

The fat loss market is saturated with different products that all claim to do wonders.

Some result in adverse side effects, and others do not give any results at all.

Finding the right fat loss supplement can, therefore, be frustrating and difficult.

To make your job easier, we have reviewed six of the best thermogenic fat burners in the market today.

We will tell you what they are, how they work, their benefits, and even their pros & cons.

If you have been looking for a foolproof way to lose weight and haven’t found any, this thermogenic fat burner review is for you.

6 Best Thermogenic Supplements Compared

1. Instant Knockout

instant knockout

Instant Knockout is a potent thermogenic that gives you the power to erase even the most stubborn body fat.

It was initially made for MMA fighters and bodybuilders who needed to get in shape quickly to beat a deadline.

This fat burner is endorsed by MMA champion fighter Diego Sanchez who reports that it helped him drop two sizes.

Instant Knockout is now available for anyone who is looking to burn excess body fat and attain lean muscle.

The secret behind this thermogenic fat burner is its formulation of ten fat-burning heavyweights that will turbocharge your fat loss journey.

Unlike other fat burners, the ingredients in Instant Knockout are well researched, of high quality, and in the right doses.

Because they are all-natural and free of chemicals or artificial additives, they will not cause you any adverse side effects.

Further, these ingredients harness the thermogenic power of extracts such as green tea and cayenne pepper to ramp up metabolism.

Once your metabolism is up, your body will burn calories and stored fat much faster.

To ensure that you don’t overeat or snack too much, this fat burner contains glucomannan, a fiber that swells up in the stomach, making you feel full.

To keep you energized and motivated, it contains caffeine and B vitamins, which help to convert food into energy.

Instant Knockout is manufactured by Roar Ambition, a UK based company that makes several other health and sports supplements.

Its production meets all FDA and good manufacturing practices requirements.

Roar Ambition ships worldwide from the USA and UK and offers a 90-day money-back guarantee to customers who are not entirely satisfied with Instant Knockout.


Instant Knockout has many benefits, such as:

  • It helps incinerate excess, unwanted fat
  • It promotes a feeling of fullness and reduces cravings
  • It boosts energy and motivation
  • It will give you a toned, sexy body
  • You will enjoy increased self-confidence from your new body
  • It will boost libido and stamina


  • It is endorsed by some of the most successful boxers and MMA fighters
  • Made from natural ingredients with no side effects
  • Reduces appetite and cravings
  • Boosts energy levels and self-confidence
  • It can be used by both men and women to reduce fat
  • Made in FDA approved facilities
  • Ships worldwide
  • Comes with a 90-day money-back guarantee


  • Contains several sources of caffeine which can alter sleep
  • Should not be combined with any other stimulant
  • The money-back-guarantee is selective to larger packages
  • Must be combined with a healthy diet and exercise to work

2. PhenQ


PhenQ is one of the most revolutionary thermogenic fat burners in the market today.

This is because while other supplements target one area of fat loss, PhenQ targets five distinct areas with one pill.

In the time that it has been in the market, this thermogenic has been bought by 19,000 customers.

PhenQ is a potent fat burner, and it does this by using ingredients that increase the body’s metabolism and raise the thermogenic rate.

It also stops the production of fat in the body, which ensures that you will not gain any more weight.

Because overeating and cravings are a significant deterrent to weight loss, PhenQ contains ingredients like Nopal that suppress your appetite and help reduce cravings.

Losing weight and keeping it that way requires much physical and mental energy, and the makers of PhenQ have not forgotten this factor.

They have added energy and motivation building ingredients such as caffeine to keep you alert and in tune with your weight loss goals.

All the ingredients in this thermogenic are clinically tested and backed by scientific research.

PhenQ is manufactured by Wolfson Berg Ltd, a company based in Cyprus.

It ships worldwide and comes with a 60-day money-back guarantee.


  • It gives better results than other thermogenic fat burners
  • Burns stored fat to reveal hidden muscles
  • Stops the production of fat in the body
  • Suppresses appetite and reduces cravings
  • Boosts energy levels and uplifts moods


  • Combines the power of five pills in one
  • Burns fat and stops its production in the body
  • Reduces appetite and cravings
  • Made in FDA and cGMP approved facilities in the UK and USA
  • The manufacturer offers a 60-day money-back guarantee
  • Can be taken by vegans and vegetarians
  • Does not cause any side effects
  • The maker offers free worldwide shipping
  • Can be taken by both men and women


  • Only available online
  • Must be combined with exercise and a healthy diet to work
  • Results are not standard and vary with people
  • Contains ingredients with caffeine, which might affect sensitive people

3. Hunter Burn

hunter burn

Hunter Burn is a premium thermogenic designed to burn fat, beat hunger, and build muscle.

It is designed for busy, professional men who are chasing success at work, in business, and at home.

The makers recognize that as men age, they accumulate fat around their waist, which can result in low self-esteem.

Men who are unsure of themselves will not have the drive required to compete with others professionally.

This thermogenic therefore offers such men a chance to melt body fat and boost self-confidence, which empowers them to succeed.

Hunter Burn is formulated with some of the most potent ingredients among thermogenic fat burners.

To incinerate fat, Hunter Burn uses matcha, a more potent form of green tea, which boosts metabolism by up to 35% more than regular green tea.

It also utilizes konjac root fiber, an appetite suppressant approved by the FDA.

This is one of the few thermogenic fat burners containing vitamin D, which is why it can retain muscle amid fat burning.

Vitamin D, in particular, is what makes Hunter Burn a smart fat burner and also boosts energy levels.

It is also formulated with the right doses to meet your demands and therefore delivers better results.

All the ingredients used are 100% natural and clean, devoid of artificial flavors, colors, GMO, preservatives, gluten, or soy.

Hunter Burn is manufactured as part of the Hunter Suite of supplements designed for the professional male.

This thermogenic is manufactured by Roar Ambition, a company that makes other well-known supplements such as Instant Knockout, Prime Male, Hourglass Fit, and Testofuel.

These are manufactured using the latest cutting edge scientific and nutritional knowledge.

Roar Ambition is based in the United Kingdom and ships its products all over the world.


  • Reduces fat loss
  • Boosts energy levels
  • Puts a stop to overeating and cravings
  • Increases self-confidence and success
  • Gives a lean, toned body


  • Burns fat while maintaining muscle mass
  • Does not have any side effects
  • Uses high doses that are more effective
  • Ideal for vegans and vegetarians
  • Made by a reputable manufacturer
  • The formula is clinically tested and confirmed
  • Comes with a 90-day money-back guarantee
  • Made in the UK and USA


  • As a premium product, it is pricey
  • One must take up to six tablets in one day
  • Only works when combined with exercise and a good diet

4. LeanBean


Leanbean is a revolutionary fat burner explicitly tailored to women.

It works on the premise that women’s bodies react to weight gain and fat loss in a different way than men.

Women are also more likely to overeat, especially when stressed or in emotional turmoil.

It, therefore, makes sense to design a product that caters to these specific issues.

Leanbean is formulated from a combination of natural ingredients and does not include harmful stimulants.

These ingredients work in three significant ways- to burn fat, suppress appetite, and boost energy levels.

By using glucomannan, a powerful appetite suppressant, this thermogenic ensures that you stay full in between meals, which prevents snacking.

Leanbean contains 3g of glucomannan, which is the clinical dose recommended by the European Union

One of the most important roles of a thermogenic is to raise metabolism, and you will find a combination of thermogenic ingredients in this supplement.

When your metabolism is high, your body will burn more calories as you exercise, and even during rest.

Finally, this fat burner keeps your energy levels up to ensure that you don’t feel grumpy or irritable from dieting or exercise.

Leanbean has numerous positive reviews from women who have used it to change their lives.

It is also highly recommended by pro-surfer and model Bree Kleintop, who has been using it to stay lean and energized in the course of her work.

Leanbean is manufactured by Ultimate Life Ltd, a supplement company located in the UK.

You can purchase it regardless of where you are in the world, as Ultimate Life offers worldwide deliveries.

Some of the benefits of this thermogenic are:

  • It will help you get rid of stubborn body fat
  • It will suppress your appetite and cravings
  • It jumpstarts metabolism
  • It will boost energy
  • It may improve health and overall well-being
  • It will boost your self-esteem


  • Melts off stubborn belly fat
  • Curbs cravings and regulates appetite
  • Made with natural ingredients with no side effects
  • Does not contain large amounts of caffeine
  • Ideal for vegans and vegetarians
  • Has many positive reviews from users
  • It ships worldwide
  • Made in FDA certified facilities


  • The Moneyback guarantee applies only select packages
  • Does not contain enough caffeine for sustained energy
  • Doesn’t work without exercise and a good diet

5. Burn Booster

burn booster

Burn Booster is your ultimate partner in the fight against excess body fat.

It has been a choice product for celebrities, singers, and models who cannot afford to gain weight, but it’s now available for everyone.

This thermogenic is endorsed by dieticians such as Patricia Smith, who recommends it to her patients looking to lose weight.

If you have been struggling to lose weight and have wasted your money on products that haven’t worked, Burn Booster promises to get rid of it for good.

The secret behind this thermogenic is effective ingredients chosen for their ability to boost metabolism, enhance fat burning, curb appetite, and increase energy.

Metabolism, in particular, is the central issue when it comes to losing weight.

If you have a slow metabolism, you will struggle to lose weight as you burn fewer calories.

Burn Booster claims to supercharge your metabolism and help you lose up to 17lbs in one month.

To do this, it utilizes cayenne pepper and Garcinia Cambogia, two ingredients with superior fat-burning power.

Barley grass, on the other hand, has high fiber content that makes you feel full, stopping uncontrolled cravings and overeating.

It is not clear who manufactured this thermogenic as this information is not given on the official website.


Some gains to expect from Burn Booster include:

  • Increased metabolism for faster fat burning
  • It will curb appetite, preventing over-eating and cravings
  • It will boost your energy levels
  • You will enjoy a slim figure
  • The results will boost your confidence


  • It speeds up metabolism
  • It increases energy levels
  • Made from natural ingredients with no side effects
  • Gives quick results
  • Used by models and celebrities
  • Formulated with potent ingredients
  • Has many positive reviews from users


  • The manufacturer does not offer free shipping
  • It does not carry a money back guarantee
  • Manufacturer information is not available

6. Fast Burn Extreme

fast burn extreme

Fast Burn Extreme is a multi-ingredient supplement that supports weight control, reduction of fat stores in the body and boosts metabolism.

It contains ingredients that increase thermogenesis, support fatty acid oxidation, and help maintain normal blood sugar levels.

This thermogenic contains hydroxy citric acid (HCA), which plays a crucial role in inhibiting fat production and storage in the body.

During exercise, Fast Burn Extreme increases endurance, speed, and keeps your motivation up.

The ingredients in Fast Burn Extreme are all-natural, consisting of herbal extracts, vitamins, and amino acids.

The makers of this thermogenic, Nuvia Lab, believe that it is the perfect accompaniment for those looking to burn fat fast.

Nubia Lab has offices in San Francisco, USA, and makes health, sports, and beauty supplements.

Fast Burn Extreme is manufactured in FDA approved labs and comes with a 90-day money-back guarantee.


Some of the benefits you stand to gain from this thermogenic are:

  • Overall weight control support
  • Reduction in stored fat deposits
  • A supercharged metabolism
  • Regularized hormonal activity
  • Increased metabolism of carbohydrates and fats
  • Normal blood sugar levels
  • Increased energy and alertness
  • Reduction in fat production and storage
  • Increased reaction speed
  • increased endurance and strength


  • It accelerates fat burning
  • Does not cause any adverse side effects
  • Boosts energy and endurance
  • Manufactured by a reputable company
  • Stops the formation of new fat deposits
  • Comes with a 90-day money-back guarantee
  • Made in the USA in cGMP certified facilities


  • Contains caffeine, which may disturb sleep or cause jitters
  • Works better when combined with diet and exercise
  • The official website does not display customer reviews

Best Thermogenic Fat Burners FAQ

What is a thermogenic fat burner?

A thermogenic fat burner is any dietary supplement that increases thermogenesis or the production of heat in the body.

For body temperature to go up or for more heat to be produced, the body must burn more calories.

Thermogenic fat burners, therefore, contain ingredients that increase the production of heat in the body, thus forcing the body to burn energy or stored fat, resulting in weight loss.

How does a thermogenic fat burner work?

As mentioned, a thermogenic fat burner is one that increases the production of heat in the body to accelerates calorie burning.

A good fat burner also suppresses appetite to prevent overeating and cravings.

Most supplements will include an ingredient like glucomannan, which promotes a feeling of fullness, helping one avoid snacking between meals.

A thermogenic will also boost energy levels to help you sustain a gym workout or exercise.

What are the most common ingredients in a thermogenic fat burner?

Many ingredients can be considered as thermogenic, but some of the most common that you should look out for include green tea, cayenne pepper, cinnamon, and turmeric.

Others are bitter orange extract, caffeine, capsaicin (found in chili peppers), and Garcinia Cambogia.

To suppress appetite and reduce cravings and overeating, you will also find a fiber-filled ingredient such as glucomannan.

How fast do thermogenic fat burners work?

How fast a thermogenic works will depend on several factors, such as the ingredients and their doses.

Most optimally dosed supplements with the right ingredients will start giving initial results within 2-3 weeks.

Because dietary supplements work alongside the body’s natural processes, they take longer to show results.

For the most part, you can expect to see the promised results by three months.

Are there separate thermogenic fat burners for men and women?

Depending on the manufacturer, a thermogenic can be designed for men only, such as Hunter Burn, which is discussed here.

It could also be for women only, such as Leanbean. The majority of thermogenic fat burners, however, are advertised for use by both men and women.

Even in the case that a thermogenic is made specifically for women, for example, the ingredients are likely to be similar to what you will find in a men’s fat burner or a unisex one.

For example, glucomannan, a potent appetite suppressant approved by the EU, is a common ingredient in all thermogenic fat burners, be they male or female.

Should I combine a gym workout with my thermogenic fat burner?

Yes, this is highly recommended.

The goal of thermogenic fat burners is to help you lose unwanted weight.

You are unlikely to do this without incorporating a healthy diet and regular exercise.

Most fat burners will give a disclaimer that they only help to support or accelerate your efforts, but they do not work in isolation.

To ensure that you don’t get fatigued because of physical exercise, most contain energy-boosting ingredients such as caffeine.

What should I consider when buying a thermogenic fat burner?

One of the most important factors to consider in a fat burner is the ingredients and their quantities.

A good thermogenic will include ingredients known to accelerate fat burning, give energy, suppress appetite, and even inhibit fat production.

You should also check to see who the manufacturer is, what reputation they have online, and whether the formula has any scientific or clinical backing.

Finally, because you are likely to use the thermogenic fat burner for several months or longer, you should consider the price in the long term.

Some manufacturers offer generous discounts for larger packages, and you should take advantage of this.

Will a thermogenic fat burner give me muscles?

No, not expressly. The primary role of a thermogenic fat burner is to help you burn excess body fat.

When the fat melts away, you are likely to see muscle definition, but you will have to incorporate some kind of strength training to build muscle.