What Fat Burner | Top 3 Fat Burners

By | August 8, 2016

We spend a lot of time reviewing and testing fat burners on a number of bases.

This top 3 list has taken a long time to put together.

You want to shred unwanted fat, you want to shred it fast. But it’s important to remember you want to shred with the BEST possible fat burner. Not only in terms of active ingredients and results, but in terms of customer service, value and NO side effects.

These are the current top 3 legal fat burners that money can buy.

A Word of Warning - Shop Smart

Lot’s of fat burner websites are using poor reviews to push inferior products. We know you’re taking your time choosing a fat burner, but shop smart. Ensure you don’t choose something that has a proprietary blend and ONLY buy from trusted brands, that manufacture their supplements in cGMP approved facilities.

You’re going to be supplementing this product for 30 days plus. It’s essential you don’t fall into the common consumer trap of buying something ineffective and dangerous.

Company Website  www.instantknockout.com   www.grenade.com   www.musclepharm.com
Your Score (Average)  4.75  3.6  3
Appetite Suppression   5 3 4
Thermogenic 5 3 3
Energy Release 4 5 3
Shipping  Worldwide  Retailer Dependant  Retailer Dependant
Guarantee  90 Day + Free Box and T Shirt  No  No
Price  $59.00  $59.04  $29.38
Side Effects None reported Some, mild Some, mild
Overall Score  5/5  4/5  3/5

.1 Instant Knockout Fat Burner – Big Dose, Proven Results


About Instant Knockout


Instant Knockout is a product from Roar Ambition. This specialist supplements company have used 10 powerful natural fat burning ingredients to come up with this product.

Widely reviewed online and with a large amount of positive testimonials on YouTube, Instant Knockout is in our eyes worth the hype that surrounds it and so takes top spot in our top 3.

While Grenade Thermo Detonator and MusclePhram Shred Sport are both good fat burners, they lack the range of proven ingredients and product quality of Instant Knockout.

Read our full review (5 minutes) or check the summary:

The good:

  • Cut your fat faster than ever, with scientifically backed ingredients
  • Stay focused, with more energy and LESS appetite
  • Full body fat burn, 24/7 from high 4 capsule dose
  • Fast worldwide shipping from inside the US and UK
  • 90 day returns policy on multi box deals.
  • 4 doses per day (120 capsules) for a reasonable price
  • Premium brand and product.
  • Suitable for males and females

The bad:

  • Due to high demand stock can run out. Act fast if you can get it.
  • 4 capsules per day can be annoying to remember
  • Only available from www.instantknockout.com
  • Caffeine can occasionally impact sleep if taken too close to bed

-Read Our Instant Knockout Review-


-Visit Instant Knockout-

2. Grenade Thermo Detonator – Close 2nd, Bigger Dose Required


This is the most high profile fat burner of our top 3. While Grenade has a lot of merits and is widely used, with a little research you’d find yourself looking for something with more proven ingredients in it. One thing we do love about Grenades offering is the brand though. It looks great. We couldn’t find as many testimonials online and when we used it experienced some sides effects.

Read our full review (5 minutes) or check the summary:

The good:

  • Premium brand
  • Green Tea is a proven fat burner
  • Used by athletes, works well with heavy gym sessions
  • Grenade offer support on MACRO counting
  • Widely available

The bad:

  • Small Daily Dose
  • Citrus aurantium can cause interactions and side effects with caffeine
  • No guarantee
  • Some side effects reported due to ingredients interacting

Go to Grenade.com

3. Musclepharm Shred Sport


Last in our top 3 is Musclepharm Shred Sport, this fat burner was previously number #1, but just couldn’t better Instant Knockout or Grenade Thermo Detonator.

Shred Sport was a good fat burner that was trialled again recently, but ultimately, to get the better results, you need to be training 4+ times per week and training hard.

This is to make use of the amino acids in the product, such as the Theacrine. Overall, you are going to get better results from our #1 and #2.

Read our full review (5 minutes) or check the summary:

The good:

  • Caffeine, Green tea, Black pepper
  • Affordable price
  • Looks great
  • Trusted company

The bad:

  • Need to be training HARD to make work
  • Amino acids could be dosed higher
  • Serving isn’t spread evenly
  • Some side effects reported due to ingredients interacting.

Order Shred Sport

Looking through fat burner review after fat burner review?

Well rest assured we have tried and tested our top 3 fat burners. They’re not just some random supplements picked from nowhere. These are essential products that work.

We’ve tried to go with big reputable supplement companies for each product and chosen ones that are driven by results, not just profits.

Generally, when buying a fat burner you want a product that comes from an established retailer.

Try and avoiding buying products that look cheap from places like Amazon and Ebay. For more information on Spotting a top 3 fat burner, check out this page.

What Fat Burner’s Top 3 Explained

We judge our fat burners on the following key criteria in order for them to make the cut:

Results – Will this fat burner work, and will it work for everyone who buys it?

A fat burner that gets results is hard to find. One that fits as many types of people. With loads of different genetics is even harder. So these products, are safe and will most likely work with YOU!

Side Effects – Side effects can cause more harm than good.

It’s essential when you start supplementing any fat burner (hopefully from our top 3) you do so with a product that is completely safe. Side effects can set you back and even ruin your results altogether!

Cost – You get what you pay for!

Our #1 may seem slightly expensive, but you get what you pay for with supplements. Don’t waste time taking something that won’t work and could cause you harm by going cheap!

Availability – How fast is delivery?

Getting a product from a company with poor customer service and a rubbish delivery network can be nightmare. We’ve ensured this isn’t the case with our top 3.

Trustworthiness – Don’t get cheated.

Lots of companies will try and scam you with auto re orders, proprietary blends and dodgy ingredients. We’ve checked companies fully online to ensure this list is scam free! Buy with confidence.

Reputation – Big Rep, Better Results

We’ve checked blogs, forums, other review sites and social media to ensure that each of these product backs up their claims. The customer doesn’t lie, and it’s good to know that.


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Not Ready for a Top 3 Fat Burner?

Not ready for a supplement from our top 3? Well no worry, there are plenty of ways you can start the fat burning process at home.

Here’s an expert bodyweight fitness video from The Zeus Fitness that can really kick things into action!

Females can really ramp up fat burning by following some simple yet effective exercises too.

If you want to read more about the top 3 fat burning exercises to burn fat for women – click here.


Fat Burning Ingredients Index – What’s Inside Your Supplements?

We like to think we are the forefront of fat burners at WhatFatBurner.

Constantly being at the forefront means we have an ever growing archive on ingredients we regularly add to. Here you can see exactly what fat burning ingredients are and will do if you supplement them.

This index, our holy grail, has made it so we can safely assume the effectiveness of products based upon their ingredients and dosages.

An example of what you might see in a review:

Fat Burning Ingredients Index

Green Tea 

Green Tea is very popular amongst health and fitness enthusiasts in recent times. Especially as it has been found that when combined with caffeine, it can boost your metabolism far beyond what caffeine can do alone.
Studies have shown that it can increase your metabolism to the point of burning an extra 200 calories a day without added exercise. 500mg of Green tea is perfect in a fat burner.

Rest assured we have pulled all the latest research and science on Green Tea together in the index and made it so it’s easy to understand in the context of the product you are looking at.

For a full green tea article you can check out this post! 

What goes inside your fat burner is the most crucial part of the product.

Whilst it’s great to have a product that looks amazing and works – Instant Knockout and Grenade we are looking at you, the ingredients are the things that will get you shredded.

As we say in all reviews, avoid proprietary blends. These blends can cause more harm than good and are commonly the hallmark of a scam supplement.

Ingredients in the Top 3 Fat Burners

If you want to see more information on the ingredients we have featured in our top 3 fat burners, you should check the individual reviews.

We have ensure that each product is broken down in this top 3 page, with the effective and proven ingredients highlighted, but for more information check the reviews.

As we have mentioned we check all our ingredients against current scientific research and studies using publications like PubMed and Examine.

Rest assured these are websites that are at the top of their game, so you can be sure what they say is pretty much the gospel truth.

Using these sites as a resource we have managed to pull together out current list of top 3 fat burners.


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25 thoughts on “What Fat Burner | Top 3 Fat Burners

  1. Jane

    I have read through several fat burner review lately because I need an active fat burner supplement for my mum. This is just so appealing and I’m glad I found this now; it really brought a great relief to me. I’m sure going to give the Instant Knockout a try. Thanks for the info.

  2. Mia Cole

    Yeah! I know Instant Knockout so well. It’s one of my ever-trusted supplements for burning fat while I was in service. But now, I have relocated and couldn’t find anywhere to get one again. Thank you for this fat burner review, please how can I get the Instant knock out again?

  3. Cindy Mathew

    As for me, I prefer the PhysiqueSeries over the Instant knockout for burning fat. Though many fat burner reviews may tell you otherwise. It has this special ingredient included in it that do get me on a good mood every time I take the fat burner supplement. The unusual feelings I do have while taking other fat burner supplements was completely taken off.

  4. Izvorul Ascun

    I’m surely going to give the Instant Knockout a try. I love the assurance you gave on the ‘money back’ policy. However, I hope it help me burn some fat and lose weight even before the three months you stated so that there will eventually be no need asking for a refund. Thanks.

  5. Rita Matic

    What irks me about fat burner supplements is the stomach bloating feelings I get from their use. I really want to try this Instant Knockout too and hope the story actually changes this time around.

  6. Gemma

    If you ask me which is the best of all the fat burner supplements I had taken before, I will tell you it’s the PhysiqueSeries. It was recommended for me by my cousin, Janet. I actually doubted the supplement at first, but it gave an incredible result after few weeks. Am glad I found this product.

  7. Rachael Jens

    What I really need now is a working fat burner supplement that works. I have had enough mouth-washing commercials about many fat burner reviews that eventually turned to be worthless. But I want to ask; can I get 2 of these products and combine their effect? I mean, can I actually use both of them at the same time?

    1. Fat Burner James Post author

      We wouldn’t recommend it. Just buy one fat burner and follow the instructions. We got the best results from using Instant Knockout.
      Remember to keep your diet clean.

      We don’t do commercials round here, not sure we understand that! Just real fat burner reviews 🙂

      Check the Instant Knockout review out:

      Instant Knockout score

    2. Cynthia Patel

      I really don’t think its right Rachael. I used Instant knockout and it worked well for me. I saw great result after using the first 120 capsules. You can also try it out or you go for the Thermaxin Thermo Enhancer if you are a bit low on cash; it also works well.

  8. Vicky

    If it involves voting I’d vote for Instant knockout as the best fat burner supplement out there. I love it because it completely takes off the usual side effects that do follow many fat burner supplements. I won’t have to worry myself of sleeplessness because I want to burn fat. It can be so annoying!

  9. Perpi

    Just 120 capsules and 4 doses per day? That’s apparently around a month use. You mean I can actually lose this disgusting fat in just a month? I can’t wait to get this fat burner supplement. Or am I missing something?

  10. Rachael Mills

    Hmm, was thinking of going for transparent labs physique series instead of instant knockout but I can see here that everybody that has used instant knock is giving a good review so I think I will also try it out regardless of the price.

  11. Bia Ali

    It worked perfectly well for me! I couldn’t believe there could be such a fat burner supplement that works so fast until I tried instant knockout. I thought it was expensive, but it’s really worth the price.

  12. Gail Val

    The Instant knockout fat burner supplement actually worked. But to make sure I get the most out of this supplement, I went farther than what the fat burner review said. I combined exercise (up to 3days in a week) and good diet with it. The result afterwards was totally incredible.

  13. Fareha Linu

    The rigorous exercises being recommended to me all the time in my quest to burning fat was just something else. I decided to settle for a fat burner supplement. I was lucky at my first pick; I actually got the best fat burner. The PhysiqueSeries was just perfect for me. It’s really worth the price.

  14. Ashley Sambrano

    I think PhysiqueSeries should top the list. Anyway, I did not use Instant Knockout while trying to see the best fat burner supplement. I went straight to PhysiqueSeries and I think it should top the list of fat burner supplements following the kind of effectiveness it offers.

  15. Luciana Jack

    I am 3 months pregnant but I want to shed some of these unpleasant fats before my baby comes. I will like to know if this fat burner will have any side effect on me or my baby. I will appreciate your response to this effect. Many thanks!

  16. Anna

    Hi guys,

    i have never posted on things like this before but here goes.

    i am currently following a joe wicks lean in 15 fat burning diet and it’s not been too good. i have found your list to be the best and most honest when it comes to fat burners so far and have put an order in for instant knockout.

    (i tried fit affinity, but it was a waste of my time and money)

    my big question is how well do you think this fat burner will work with the joe wicks lean in 15 stuff? i do workouts around 3 times per week at home and then i try go to the gym once too.

    im looking to just burn away fat from around my tummy. i know nutrition is key, but im really hoping instant knockout works with nutrition.

    thanks for this list of top 3 fat burners anyway, its very helpful and your fat burner reviews are easy enough for even me to understand!

    look forward to hear more. heres a good joe wicks workout for doing too if anyone needs one –


    1. Fat Burner James Post author

      Hi Anna,
      Yeah I’ve seen Joe Wicks. He’s a nice guy and has some really good recipes.

      As long as you are training those 3 times a week and eating clean (as Joe Wicks does) you will get good results from Instant Knockout.

      You could probably burn fat with it, just off a slight diet. However the exercise will help. Try and keep meals spaced and smaller, and ALWAYS try and have a capsule when you feel like snacking.

      Hope this helps! – There’s loads of Information on how to take Instant Knockout on their website http://www.instantknockout.com/how-to-take

  17. Alan Denby

    came across this from the fat burner tip on green tea.
    very useful and have just read a bit of the very long instant knockout review hahah

    as far as top 3 fat burners go you have one of the best top 3s as they all look great and have good ingredients.

    I am not convinced yet though as I’m worried the caffeine in instant knockout or grenade will keep me awake too much. I’m 46 and need to lose lots of weight quite fast ideally lol

    1. Fat Burner James Post author

      Hello Alan.

      There is around 75mg of caffeine in Instant Knockout.

      If you ensure you don’t take it too close to bed you’ll be fine.

      Remember drinking green tea has benefits too, if you don’t feel commited to a fat burner just yet.

      You can also check our other fat burner reviews as we have covered some caffeine free supplements.

      Thanks and good luck

  18. Julio Carver


    I’ve seen other top supplement lists –


    You are pushing different supplements to them and I am confusing myself as to which supplements and why. Can you please help me choose and supplement and find out which one will work best?

    I’m currently wanting to lose fat around my belly. I do do gym 3 times per week and eat ok too! So think a new fat burner supplement will help me.

    Thank you


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