Instant Knockout reviews – does this fat burner work?

We take a close look at the Instant Knockout fat burner to see where it stands compared to the other products out there right now

Our rating: ★★★★★
instant knockout reviews
Instant Knockout is made by Roar Ambition Photo: The Sport Review

If you’ve done any research for yourself into fat burner supplements, you’ll probably have already heard about Instant Knockout.

It’s one of the more popular fat burners on sale at the moment and is considered as one of the market leaders in this particular category of supplements. But is it all it’s cracked up to be?

The problem these days when trying to find the best fat burner is that there are so many different products out there at the moment that it can quickly become confusing.

Luckily for you, our team of experts has done all of the hard work for you by breaking down everything you need to know about this product.

Product website:

It’s made by a specialist supplements company called Roar Ambition and contains a blend of ingredients to help your body burn more fat.

It was originally developed to help MMA fighters and professional boxers strip fat before a big fight, but it was made available to the general public a few years ago.

In this article, we’re going to take a close look at Instant Knockout by looking at the ingredients, safety and checking out some of the customer reviews.

So, let’s get right down to business and start taking a close look at the Instant Knockout Fat Burner.

What does Instant Knockout do?

As you’ve no doubt already gathered, Instant Knockout fits into the broader range of supplements known as ‘fat burners’.

These are supplements which contain a blend of (usually natural) ingredients to help your body burn more fat.

They do this by supplying your body with the nutrients it needs to use more fat as an energy source.

It’s important to remember that fat burners don’t do any ‘fat burning’ themselves – they simply give your body exactly what it needs to burn more fat.

Instant Knockout contains a blend of natural ingredients which have been selected for their ability to help your body burn more fat.

The best fat burners usually work in three different ways, by:

• Boosting metabolism
• Increasing energy
• Suppressing appetite

Lots of the fat burners we’re reviewed recently only attack fat in one or two of the above ways.

The truth is, burning fat is not an easy process, and you’ll need to make sure that you’re attacking the problem from the three angles shown above.

Instant Knockout fares very highly for this, as it contains a number of different ingredients designed to help with all three aspects.

What you need to know about the ingredients

The ingredients are the crucial factor which determines whether a fat burner is actually effective or not.

But the best fat burners don’t just contain the best ingredients, they also have them in the correct and proper doses for them to actually work.

Let’s kick this section off by taking a look at the exact ingredients in Instant Knockout as stated on the label:

instant knockout ingredients

Instant Knockout contains some of the best natural ingredients proven to boost fat burner, and in great doses. Here are the top ingredients in the product and why they work:

• Green Tea – This is a powerful natural thermogenic packed full of antioxidants. It’s a very popular ingredient in fat burner supplements these days because it can boost metabolism and also increase energy levels. It’s one of our top fat burner ingredients.

• Cayenne Pepper – This works in two separate ways to help your body burn more fat, by boosting your metabolism and suppressing appetite. It’s another of our top picks for fat burning ingredients.

• Caffeine Anhydrous – It’s one of the most popular natural stimulants on the planet and coffee drinkers will know all about it. Caffeine can help increase energy levels but can also act as a metabolism booster. Anhydrous is one of the purest forms of caffeine.

• Glucomannan – Another of our favorite ingredients, this is a powerful natural plant extract which has been shown help keep you feeling fuller for longer, making it easier to stick to your diet.

• Green Coffee Bean – Green Coffee Bean can help boost metabolism to help you burn more fat. It’s another one of our top picks for fat burner ingredients.

There are a number of other good ingredients in Instant Knockout, such as B Vitamins, Chromium and Black Pepper Extract (which can boost the absorption of the other ingredients and make the supplement more effective).

One pleasant surprise was that Instant Knockout doesn’t use a proprietary blend – that means that the doses of each individual ingredient is specifically listed.

We like this because it shows that the manufacturer is confident in their product, being totally transparent to allow customers to see exactly what is in each capsule.

You’re going to be putting this product into your body, so you’ll want to know exactly what’s in it.

instant knockout

We recommend Instant Knockout as the best fat burner on the market right now

What’s missing?

Instant Knockout actually contains every single one of our favorite fat burning ingredients, which is why we rate it as the best product in this category on sale at the moment.

The only slightly disappointing thing is that the capsules themselves contain Gelatin, which means that if you’re Vegan or Vegetarian, you’ll have to open them up and mix the contents with water, which is not ideal.

Are there any side effects?

Before taking a fat burner, you’ll want to be sure that the product is completely safe and that it doesn’t contain any banned or risky ingredients.

Thankfully, most of the products in this category are generally considered to be pretty safe because they only contain natural ingredients.

One thing we found with fat burners is that many of them tend to be overloaded with stimulants, which could lead to energy crashes and the jitters.

Instant Knockout contains 300mg of caffeine per daily serving, which should be OK for most people.

It’s worth remembering about the stimulant content though, and some people may have to reduce their caffeine intake from other sources. We’d also recommend not taking this product too close to bedtime.

Instant Knockout Fat Burner

Instant Knockout Photo: Roar Ambition

How to take Instant Knockout

One good clue about how effective a fat burner supplement is really going to be can be found on the directions label.

For your body to burn more fat, you’ll need to be supplying it with all of the ingredients it needs to burn fat on a regular basis and around the clock.

That means that the more often you have to take the product, the more effective it’s likely to be.

With Instant Knockout, you take one capsule, four times a day, in between meals.

That’s fairly straightforward, but remembering to take it that often could be difficult for people with particularly busy lives.

As we mentioned above, if you’re sensitive to caffeine, we’d recommend taking the last dose not too close to bedtime.

What are customers saying?

If you’ve done any research for yourself, then you’ll probably have already read some of the many testimonials on the website.

We did some digging on a few forums, YouTube and social media to check out what the general public are saying about Instant Knockout.

A few people complained that they didn’t like having to take four capsules per day, and there were some customers who claimed that it didn’t work for them. Every product that we’ve looked into has had at least some unhappy customer. It’s hard to tell if these people are using the product in the correct fashion (combined with good nutrition and a solid workout plan).

However, the overall reviews of Instant Knockout were generally very positive. It seems to be a top product with a prove record of success in the industry.


We found many positive customer reviews of Instant Knockout on social media and other websites

In terms of athletes, seasoned UFC fighter Diego Sanchez used it to lose 45lbs in five months for his debut fight in the Featherweight division.

Is this the best fat burner?

Yes, Instant Knockout is our top-rated fat burner supplement right now because of its blend of top ingredients and positive customer feedback.

You can read more about why it makes our top five best fat burners list by clicking here.

Any negatives?

Although Instant Knockout is our top pick for fat burner supplements right now, there are a couple of drawbacks.

Firstly, you can only buy it on the official website at the moment, meaning that you won’t find it on other sites such as Amazon or in the shops. We actually like this, because it means that you’re getting the product directly from the manufacturer and you be sure it’ll be 100 per cent authentic.

It’s a premium priced product. The price for one bottle is: $59 / £35 / €45, which might be out of some people’s budgets.

There’s a promotion on the official website where you buy three bottles and get a fourth free, and that includes free worldwide shipping.

Anything else to consider?

Fat burners can be extremely effective when used properly – but they will not do all of the hard work on their own.

The first thing you should do is make sure that you’re eating right and exercising regularly.

From experience, when you’re training hard and eating right, a good fat burner can often been that ‘missing link’ to get you the results you’ve been working hard for.

But you should always make sure doing the right things in the gym and the kitchen before expecting results from a fat burner supplement.

Review conclusion – our final thoughts

So there we have it, our full review of Instant Knockout.

We’ve taken you through the ingredients, the servings and the Instant Knockout reviews to bring you everything you need to know about this fat burner supplement.

We consider Instant Knockout to be the best fat burner supplement on sale at the moment because it contains our favorite ingredients and has solid customer reviews.

The only drawbacks are the fact that it’s a bit more expensive than a lot of other products out there at the moment and that it’s not suitable for vegans or vegetarians.

Like we mentioned above, you shouldn’t expect a fat burner to be work as a ‘magic pill’ to help you lose weight, but a good supplement can be extremely effective when combined with regular exercise and a good diet.

Instant Knockout is a great product, and the customers seem to think so too.

To find out more about Instant Knockout and to buy it now, visit:

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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This article was last updated on November 11, 2018.
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