Instant Knockout vs Performance Lab Sport Fat Burner [Which Is Best?]

Instant Knockout vs Performance Lab Sport Fat Burner

Disclaimer: This post may contain affiliate links, meaning, at no cost to you, we may receive a commission if you decide to click through and make a purchase.
Affiliate earnings help us with the cost of maintaining this website, but rest assured that if a product isn’t safe and effective – We DO NOT recommend it or include affiliate links!
Please read our Disclosure for more.

Instant Knockout vs Performance Lab Sport Fat Burner

We’re pitting two of the best fat burners against one another today in our Instant Knockout vs Performance Lab Sport Fat Burner review.

Not only are they well respected but they are effective, making this a good comparison to look into. They have got to where they are today by adopting two different approaches.

Instant Knockout is a premium product that contains all natural ingredients and has a big following. Performance Lab Sport Fat Burner is another well-respected product but they have gone to great lengths to enhance their ingredients.

Which approach will bring us the best product?

What we are looking for is the following:

  • Burn fat effectively
  • Be safe
  • Suppress appetite
  • Increase energy

The product that does this in the most effective way will get our approval today.

First, let’s get to know the people behind the products.

Instant Knockout vs Performance Lab Sport Fat Burner: Who Makes These Products?

Roar Ambition
Instant Knockout fat burner supplement review

The people behind Instant Knockout are this UK based company.

They have a loyal following with many people taking to the net to post their before and after profiles.

Part of what makes them such a reputable company is the fact that they review and amend their ingredients and dosages regularly. This means the customer is getting the best possible version at all times.

They have a very generous 90-day money back guarantee. This really gives you the chance to try the product on for size.

In terms of endorsements, theirs are impressive. UFC fighter Diego Sanchez puts his name to this product. He uses it to make weight before a bout.

Roar Ambition are also the people that make the excellent T-booster TestoFuel. Former Mr. Universe Robby Robinson puts his name to that one.

Mind Lab Pro Review - Opti-Nutra

Another UK company here and this is the team behind Performance Lab sport Fat Burner.

What makes them such a good company is the fact that they try to enhance their ingredients.

They use their patented technology BioGenesis to do so. This is what makes their ingredients safer, cleaner and more eco-friendly.

They actually try very hard to make their products as clean as possible. This product is free from GMO, gluten, allergens, soy additives and banned substances. Impressive stuff!

Performance Lab products are also vegan-friendly. This is because of the Plantcaps capsules they use. They are of a high quality and easy for the body to absorb.

A lot of the competition use Cellulose. These are made from semi-synthetic polymer making them unnatural.

They also offer a money back guarantee and make a good range of supplements. They make everything from energy boosters to sleep aids.

You will also notice that they do not sell their products on Amazon. Their site suggests that this is because they do not wish to list their products alongside low-quality products.

We understand this. Somehow some of the worst supplements we have reviewed still manage to get numerous positive reviews on there!

Instant Knockout vs Performance Lab Sport Fat Burner Ingredients

Now for the important part.

This is where we can really set them apart and see which is the better product.

The good news is that neither uses proprietary blends. This means we can see how effective each ingredient will be as the dosages are all revealed.

Mutual Ingredients

Cayenne Powder

An impressive ingredient to start with.

This is an effective thermogenic. This means it will heat the body up on the inside, causing it to burn fat to cool itself down.

You will be burning fat even when you aren’t trying to.

It is also an appetite suppressant. Cayenne Pepper swells in the stomach, causing the user to feel fuller for longer. This is the sort of ingredient that will stop you from snacking in between meals. backs this claim by saying appetite restrictions have been confirmed with this ingredient. Although, the human studies so far have been short in duration.

It is an ingredient that helps us to burn off more fat during intense workouts. Use it alongside a training program to maximize the benefits.

Performance Lab Sport Fat Burner have used a brand called Capsimax. It is a specially developed version that will prevent the user from experiencing a burning sensation which can sometimes cause an upset stomach.

A good way of getting the benefits of this ingredient without having to take on the spice.

Performance Lab has included 50 mg which will do a good job. Instant Knockout has gone for 100 mg which will be even better.

Black Pepper Extract

Not a fat burner directly but a useful ingredient.

It brings out the best in the other nutrients. This is only useful if the other ingredients are proven fat burners. Luckily for the user, both products are full of them.

So far that means the thermogenic Cayenne Pepper will be even better but the other ingredients have other useful traits as well.

Performance Lab Sport Fat Burner have gone for 2.5 mg, Instant Knockout 10 mg. Although it isn’t the most important ingredient, the dosages are still useful amounts.

Individual Ingredients

Instant Knockout

Vitamin B6

Another very good ingredient from Instant Knockout.

B6 helps to burn calories by turning them into glucose to be used for energy.

It really makes the stuff you don’t want work for you and it has even been shown to help muscles to be even more effective during training.

You want ingredients that target carbs as when it uses them for energy they don’t end up in the places you don’t want them.

The dosage of 5 mg is an effective one.

Vitamin B12

B12 stops the body from storing fat and it is another that increases energy levels that we get from food.

It isn’t something that our bodies can actually create naturally so supplementing it means you get the benefits. B12 is most commonly found in fish, meat, and dairy making it a good ingredient for vegetarians.

It promotes red cell production and if you don’t get enough it often results in you feeling fatigued.

B12 can also promote the transportation of oxygen through the bloodstream.


Low levels of Zinc in the body puts you at risk of having excess body fat.

It has been found to improve glucose metabolism as well as fat levels in the bloodstream.

A common deficiency in many, supplementing it is a good idea. Also known for being important for testosterone it has multiple benefits. says it is an essential Vitamin and it can even improve your mood.

The 10 mg here will help with the above benefits, including testosterone boosting.


Another beneficial fat burner that can help to improve our bodies insulin resistance. Chromium contains various trace elements and can regulate blood glucose.

You will find it in food sources such as vegetables, fruit, seafood, spices, and meats.

Some studies even suggest Chromium can help with communicating with the brain to control appetite.

At 100 mcg, Instant Knockout have got their dosage right once again.

Green Tea Extract

Not far off being a super ingredient and one that you might already be taking in through your evening hot drink of choice.

You can never really get enough thermogenics in a fat burner supplement and this is another. It is the catechins in Green Tea that increase the bodies metabolic rate. By aiding stamina and endurance it is a very good selection as it can help to add more time to your workout.

At 500 mg, you are getting a large and effective amount from Instant Knockout.

Green Coffee Extract

This is coffee before the color has been roasted out.

The chlorogenic acid in Green Coffee Bean is what is most beneficial. It is an acid that can stop the body from absorbing fat and even reduce blood sugar.

It is WebMD that refers to a study that found adults with obesity who took Green Coffee Extract for between 8 to 12 weeks lost more weight than those taking a placebo.

Athletes often use it to enhance their endurance levels. The 100 mg is a useful amount.


We said you can’t really have too many thermogenics, the same goes for appetite suppressants.

Instant Knockout has a healthy amount of the beneficial traits you expect and Glucomannan can help you to snack less.

A dietary fiber, it swells in the stomach. This means you are less likely to put on fat after working hard to remove it.

At 500 mg we are getting another optimal amount.

Caffeine Anhydrous

Most fat burners contain stimulants and there is a reason for it.

Firstly, this version is easily absorbed. This is why it is often found in energy drinks and it is this that will be of great benefit.

Often when using a fat burner, it is alongside a calorie intake that is lower than usual. The energy loss this causes us made up for by Caffeine Anhydrous.

It is also a proven metabolism booster and the 350 mg is a safe and effective amount.

Performance Lab Sport Fat Burner

Coleus Forskohlii Root

A good ingredient here from Performance Lab. It activates cAMP which helps the body to break down fats a lot quicker. It even reduces the number of fat cells we can produce.

Also, an effective muscle relaxant that has links to aiding mental health. advise that elevated cAMP levels are linked with increased rates of fat loss and can improve the effects of other fat burning compounds.

Much like Black Pepper Extract, Coleus Forskohlii can enhance the other ingredients. Want more? How about its links to appetite suppression.

With 250 mg, it is another great dosage.

HMB (Hydroxy – Beta – Methylbutyrate)

If you want to gain muscle and burn fat at the same time then this is the sort of ingredient you should be looking for.

It prevents us from breaking down muscle during a workout but at the same time can enhance the benefits of exercise.

You will find that it even promotes muscle growth. HMB will also encourage the body to burn stored fat and in turn use it for energy. This is the trait that ensures it protects muscle tissues we need to maintain.

WebMD tells us that is being used to promote the benefits of weight training and exercise.

There is 1,000 mg included in Performance Lab Sport Fat Burner which is another optimal dosage.

Instant Knockout vs Performance Lab Sport Fat Burner Side Effects

The good news is that neither product contains anything that you should worry about.

The caffeine content in Instant Knockout might take getting used to for some. If you do not consume a lot of caffeine it might be a good idea to start with a smaller dosage and work your way up.

Performance Lab Sport Fat Burner does not contain stimulants.

As always, if you have allergies, read the label.

Instant Knockout vs Performance Lab Sport Fat Burner Pros and Cons

Instant Knockout Pros

  • Natural ingredients
  • Money back guarantee
  • Used by top athletes
  • Ships worldwide
  • Enhances metabolism
  • Suppresses hunger

Performance Lab Sport Fat Burner Pros

  • Quality ingredients
  • Natural fat burner
  • Money back guarantee
  • Vegan-friendly
  • Non- GMO clean ingredients
  • Plantcaps capsules
  • No proprietary blends

Instant Knockout Cons

  • Not available in store
  • Shouldn’t take too late in the day because of the caffeine levels

Performance Lab Sport Fat Burner Cons

  • Just 4 ingredients

Instant Knockout vs Performance Lab Sport Fat Burner Conclusion

Winner: Instant Knockout

Buy Instant Knockout from:

(Clean Lean Machine tip: Get 1 box free when you buy 3 boxes!)

A worthy winner but both products will really get you burning fat.

We went for Instant Knockout as a result of their proven fat burners and the sheer amount of them. Don’t get us wrong, we see too many supplements that pile the ingredients into each capsule. The problem is they often include small dosages.

You don’t get this problem with Instant Knockout. It is full of proven ingredients at great dosages.

The quality over quantity approach by Performance Lab Sport Fat Burner does work as well though.

They may have only gone for 4 ingredients but they are well selected and dosed well. We really like how much they clean up this product and if you are vegan or often consider your footprint on the planet, it is a great fat burner for you.

You will find it hard to find another supplement that is as clean as theirs.

Instant Knockout is still completely safe and has many many happy customers. If you want to get really shredded then this is the ultimate fat burner that we recommend.

Buy Instant Knockout from:


Leave a Reply

Your email address will not be published. Required fields are marked *