The top 6 fat burners in 2017

We've tried and tested some of the best fat burners on sale today. Check out our pick of the top products in the list below

top fat burners in 2017
Our pick of the top 6 fat burners on sale right now Photo: The Sport Review

You’ve probably already heard about fat burners – tablets which can supposedly help you lose weight quickly.

You’d be forgiven for thinking it sounds too good to be true. We all know that there’s no substitute for hard work in the gym – there’s no shortcut to success when it comes to sculpting your lean dream body.

There’s no way around the hard work in the gym – but adding a top fat burner supplement to your current regime can make a big difference.

If you’re working hard to get in the shape of your life, you should use all of the weapons at your disposal.

So, what’s all the fuss about? Put simply, fat burners can help you to burn fat more effectively.

In this article, we’re going to explain how supplementing with a good quality fat burner can often be the ‘missing link’ between you and your fitness goals – and also pick out our favourite products on sale right now.

Let’s take a look at how fat burners actually work in a little more detail.

How to get the most out of a fat burner

The key is a good diet – there’s no magic formula when it comes to losing weight.

Exercise, patience, consistency and supplements can all help you to shed those pounds – but it’s your diet where the battle is won and lost.

You’ll need to stick to a calorie-restricted diet to translate all those reps into lean and shredded figure.

What sort of food should you be eating to ensure that you’re getting the most out of a fat burner?

Naturally, eating clean and lean is crucial if you’re going to get in great shape.

Aiming for low-fat protein sources such as chicken and turkey, healthy fats such as avocado and plenty of green vegetables will be a big help.

Remember to have realistic weight-loss goals

It’s been one week, you’re eating clean and taking a top fat burner supplement but you don’t yet have those washboard abs. What’s going wrong?

You shouldn’t expect dramatic weight loss after seven days. It’s a steady process but you’ll be sure to succeed if you remain consistent.

So, don’t expect to lose four or five kilograms in a week. A more realistic goal is to shed a couple of pounds.

Remember that you want to burn fat while also retaining muscle mass (which of course contributes towards your overall body weight), so don’t become addicted to the scales.

How often should I take a fat burner?

You should always stick to the instructions provided with your fat burner.

They’re usually produced by specialist supplements companies and have set out guidelines for you to follow to ensure their products work at an optimum level.

These supplements usually contain various ingredients in differing proportions. Excessive intake of certain ingredients can cause problems, so there’s no need to over do it.

A good fat burner will help you:

Burn fat quicker – It becomes easier to shed the pounds
Boost energy levels – Your workouts will be more efficient
Reduce hunger cravings – Sticking to your diet will become easier

The top 6 fat burners in 2017

1) Instant Knockout

top fat burners instant knockout

This is our top pick because it provides a good blend of natural ingredients to help boost your metabolism and burn fat quicker. Instant Knockout uses ingredients which are proven to help boost your metabolism, which translates to less fat storage.

Using the latest research, the creators of Instant Knockout, Roar Ambition, have created their own winning formula to ensure that you achieve results in a natural and safe environment.

In short, it helps to boost your metabolism, harness your hunger cravings and keep your energy levels high. These three factors can help you achieve results faster.

As the website says: “It’s not rocket science, it’s simple biology.”


We always steer try to clear of artificial ingredients and that’s why we love Instant Knockout. It combines all-natural ingredients to create an incredibly powerful tool to help you lose body fat.

Their product contains Green Tea, which is a powerful antioxidant known to stimulate your metabolism. Green Tea also burns ‘dangerous’ fat.

Cayenne Pepper is another important ingredient, which helps to suppress your appetite and boost your metabolism.

It also includes Glucomannan, extracted from the Konjac Plant, which is a natural fibre that can dampen your appetite.

Other ingredients used include Caffeine Anhydrous, Vitamins B6 and B12, GTF Chromium, Zinc, Piperine and Green Coffee Bean Extract.

instant knockout review

Any negatives?

Right now, you can only buy it directly from the website, meaning you won’t find it on Amazon, eBay or other similar sites. It’s a premium-priced product so may not suit everyone’s budget.


We really like Instant Knockout. A lot of fat burners can leave you with a jittery feeling due to excessive caffeine levels but that didn’t happen with this product.

It also has great customer reviews, which is why we recommend this supplement to anyone looking to lose weight in a natural and sustainable way.

For more information and to buy now:

2) Leanbean

leanbean fat burner

While most of the products in this list are targeted at both sexes, Leanbean is a fat burner exclusively designed to help women shed body fat.

It is formulated to help women harness the power of nature to burn fat with no unwanted side effects, unlike other products in the market.

Crucially, Leanbean helps women who are already working hard in the gym to take their fat burning to the next level.


Leanbean uses 11 ingredients and a couple stand out as being different to the other offerings in this breakdown of the best fat burners.

Garcinia Cambogia is a tropical fruit. Its skin is naturally high in a substance called Hydroxcitric acid, which can help to block fat and helps to increase the levels of Serotonin to reduce cravings.

Acai Berry is a popular fruit in Central America and South America. This so-called super food is naturally high in fiber and essential fatty acids to help aide the fat burning process.

Full list of Leanbean’s ingredients: Glucomannan, Green Tea Extract, Turmeric, Cayenne Pepper, Green Coffee, Piperine, Raspberry Ketones, Chromium Picolinate, Garcinia Cambogia, Acai Berry, Vitamin B6 and Vitamin B12.

leanbean fat burner

Any negatives?

A one-month supply of this product comes at a premium price but it’s currently only available from Leanbean’s website, so you won’t be able to shop around for a better deal.


We love that Leanbean is specifically targeted for the female market, showing a duty of care to its potential customers. Leanbean can really help to boost energy levels to end that lethargic feeling.

For more information and to buy now:

3) Grenade Thermo Detonator

fat burners uk

Our second offering certainly has a name to rival Instant Knockout.

Creators Monster have a mantra befitting of their Grenade Thermo Detonator product: “Declare war on fat!”

It is billed as being perfect for pre cardio, endurance and HIIT training, which covers a lot of bases.


Unlike the other products in this list, Grenade Thermo Detonator use Bitter Orange Powder to help shed that troublesome fat.

Each bottle contains 100 capsules but you can get another 44 capsules (144 in total) free right now on the Monster Supplements website.

Full list of Grenade Thermo Detonator’s ingredients: Green Tea, Bitter Orange Powder, Caffeine, Cayenne, Phenylalanine, Green Coffee, Bulking Agent (Magnesium Stearate), Gelatin Capsule (Purified Water, Colours E133, E102, E129) Titanium Dioxide.

Any negatives?

Make sure to read the instructions before using Grenade Thermo Detonator.

If you don’t follow the product’s guidelines, you could suffer from headaches or dehydration.

It also has a high caffeine content, which could affect your sleep if taken too late in the day.


Grenade Thermo Detonator can be a very useful product in your quest to get in shape. You should see a significant increase in your energy levels.

For more information and to buy now:

4) Myprotein Thermopure


Myprotein are another big player in the fat burner market, which is hardly surprising considering the size and stature of the supplements company.

Their offering is called Thermopure. It is described as a dietary product designed to be taken on an empty stomach before a workout.

Myprotein’s website advises potential customers that Thermopure is suitable for all individuals who want to include GTE, Caffeine and the other ingredients in one simple convenient source.


Thermopure uses Raspberry Ketones, which is different to most of its rivals. This ingredient is a chemical from red raspberries that is thought to help for weight loss.

Each bottle contains 90 capsules and you’re recommended to take three capsules in the morning before your workout.

Full list of Thermopure’s ingredients: Green Tea Extract (95% Polyphenols), Capsule (Gelatin), L Tyrosine, Cellulose (Bulking Agent), Caffeine, L Theanine (98%), Raspberry Ketones, Capsicum extract (30,000?50,000 SHU), Magnesium Stearate (Anti Caking), Silicon Dioxide, Vitamin B6 (as Pyridoxine HCl), Bioperine, Chromium (as Chromium Picolinate), Vitamin B12.

Any negatives?

Myprotein’s Thermopure can take some getting used to for those new to fat burner supplements. The side effects can leave you feeling a little jittery, especially as it is designed to be taken on an empty stomach.


Thermopure will increase you’re energy levels and help you to sweat more during your workouts. Myprotein can’t be beaten on price, too. You can get 90 capsules for £6.99 on their website for those on a budget. However, the ingredients are not quite as strong as the two products above.

For more information and to buy now:

5) Bulk Powders Cutting Edge

cutting edge fat burner

Next on our list of the top fat burners is Cutting Edge.

Bulk Powders claim on their website to have the “strongest” fat burner in the United Kingdom. Cutting Edge is described as Bulk Powder’s “most effective fat loss supplement”.

They have taken taken 10 ingredients proven to help weight loss, maintain a normal nutrient metabolism and have dosed them all at optimal levels to create what they call a pioneering formula.


Bulk Powders are proud of the fact that the Green Tea extract found in Cutting Edge has been included at almost 40 times the amount of a leading competitor product.

Like Instant Knockout, Cutting Edge contains Glucomannan but have a number of different ingredients which most of their rivals haven’t included.

Cinnamon extract is one such ingredient which most will already know about. Another simple ingredient is Peppermint Leaf powder, which has been used for thousands of years.

Full list of Cutting Edge’s ingredients: Glucomannan (3000mg), Green Coffee Extract (400mg), L-Phenylalanine (400mg), Caffeine (300mg), Cinnamon Extract (250mg), Peppermint Leaf Powder (50mg), Choline Bitartrate (50mg), BioPerine® (5mg), Chromium Picolinate (1mg – 2500% RDA) and Selenium Methionine 55mcg (100% RDA).

Any negatives?

The dosage is higher than most of its rivals at six capsules a day, which can prove easy to forget.

The product is also very high in caffeine which could leave you feeling tired at the end of the day and could affect your sleep.


Bulk Powders’ Cutting Edge is a worthy competitor in the fat burner market. It a premium product which may put some people off. However, if you’re willing to follow the instructions to a tee, you should see results.

For more information and to buy:

6) Protein World Fat Metaboliser Capsules

best fat burner uk

Protein World’s offering in the fat burner market is their Fat Metaboliser capsules.

These capsules are designed to absorb and target that stubborn body fat.

As well as having antioxidant properties, Protein World’s Fat Metaboliser can boost both energy and metabolic rate.

Reassuringly, this product does not contain potentially harmful ingredients such as Ephedrine or Dinitrophenol (DNP).


Protein World use some of the same ingredients as Instant Knockout, including Green Tea extract, Caffeine and Cayenne powder.

The Fat Metaboliser capsules do contain Yerba Mate Powder, which is known to provide a smooth increase in energy.

Another ingredient is Alpha Lipoic Acid – an antioxidant which you can find in green vegetables such as broccoli and spinach.

Full list of Protein World Fat Metaboliser’s ingredients: Pyridoxine, Methylcobalamin, Caffeine Anhydrous, Green Tea Extract (40% Polyphenols), L-Tyrosine, Guarana Extract (22% Caffeine), Yerba Mate Powder, Alpha Lipoic Acid, Cayenne Powder.

Any negatives?

There’s not a lot of clinical evidence available backing up some of the claims made on Protein World’s website, which could be off-putting.


Protein World’s Fat Metaboliser capsules can help to suppress hunger and prove a useful tool in the battle to shed fat. Again, it’s a little bit on the pricey side.

For more information and to buy:

Wrapping things up

So there we have it, our breakdown of the top 6 fat burners available in the supplements market right now. Our favourite products are Instant Knockout and Leanbean because they have the best blend of natural ingredients and provide a smooth boost in energy levels as you burn more fat. But you won’t go far wrong with any of the products in our list.

Remember, training hard and maintaining a good diet is crucial in getting the best from your fat burner and taking your results to the next level.

The Sport Review's product reviews are independent advice you can trust. Sometimes, we earn revenue if you click the links and buy the products, but we don't allow this to bias our coverage. The reviews are produced through a mix of expert opinion and real-world testing.


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