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Instant Knockout Review: The Ultimate Expose

Our Instant Knockout Review

Instant Knockout Pros

  • Contains muscle building ingredients to help preserve mass while getting ripped
  • Improves energy
  • Boosts metabolism
  • Suppresses appetite
  • Burn Fat

Instant Knockout Cons

  • Money-back guarantee is conditional
  • Only available through the official website



Let’s face it – the fat loss supplement market is bewildering. It’s flooded with over-priced, under-dosed fat burners, each claiming to be the solution to your weight loss goals. It’s no wonder that many of us are skeptical when a new fat burner comes onto the market. That’s why there’s a desperate need for real, analytical reviews that cut through the hype and reveal the facts about fat burners and losing weight.

One of the most high-profile fat burner supps on the current market is Instant Knockout by Roar Ambition. In this Instant Knockout review, we’re going to take a close look under the hood to help discover whether Instant Knockout fat burner really can knock your body-fat for six.

Quick Instant Knockout Review Overview

For those in a hurry, here are the key take-aways from our Instant Knockout review . . .

Instant Knockout is a very effective fat loss supplement that combines ten clinically proven ingredients and provides them in full dosages to provide real results when it comes to losing weight. Some of the marketing practices are questionable, but if you buy the triple pack of Instant Knockout fat burner (with an extra bottle for free), you can’t go wrong!

What is Instant Knockout

Instant Knockout is a fat loss supplement that is delivered in capsule form. It includes a blend of 10 all-natural ingredients designed to work synergistically to help promote rapid loss of body fat. According to the manufacturers of Instant Knockout fat burner, Roar Ambition, Instant Knockout was first developed to help boxers and MMA fighters burn fat.

When a fight is scheduled, the athlete has a limited amount of time to reach a qualifying bodyweight. Instant Knockout was apparently so successful in helping them burn fat, that Roar Ambition decided to take it mainstream.

what is instant knockout

Who Makes Instant Knockout?

Instant Knockout fat burner is produced by a UK based company called Roar Ambition. They make a range of muscle building products to help burn fat, including:

  • Testofuel
  • Instant Knockout
  • 4 Guage
  • Hunter Test
  • Hour Glass

The contact details for Roar Ambition are:

Whitehall Waterfront
Unit G4, 2 Riverside Way

There is no phone number listed on the official website.

How Does Instant Knockout Work?

Instant Knockout fat burner achieves fat loss through three mechanisms:

  • Speeding up the metabolism
  • Enhancing endurance
  • Burn fat

To achieve these goals, the supplement includes a combination of both thermogenic and non-thermogenic ingredients. Thermogenic ingredients are designed to increase the metabolism of the body. This refers to the number of calories that the body burns over the course of the day to provide the energy that you need to function. Some thermogenic ingredients are classified as stimulants. They help boost energy levels and enhance alertness.

Non-thermogenic ingredients are designed to speed up the reduction of fat storage on your body by converting it into energy. These ingredients may have lipotropic properties which stops the fat from going into the liver. They also promote the transportation of dietary fats through the body to cells to be burned for energy.

What are the Ingredients in Instant Knockout?

instant knockout ingredients

Ok, time to flip the lid and find out what makes Instant Knockout fat burner tick. Here are Instant Knockout ingredients . . .

Green Tea Extract

Green Tea is a thermogenic knockout ingredient that is well attested to in its ability to boost the metabolism by increasing the core temperature of the body. There are two vital components in Green Tea that are responsible for this:

• A catechin called epigallocatechin (EGCC)

• Caffeine

Both EGCC and Caffeine act as precursors to the release of the hormone epinephrine. This hormone is a metabolism enhancer. EGCC is just one of a number of catechins in green tea that promote fat burning. They also promote a slower absorption of carbohydrates, which helps to keep insulin levels in check.

Green tea has also been shown to increase the rate of fat oxidation. The polyphenols in green tea also reduce triglyceride levels, while also promoting more efficient fatty acid consumption in the muscles and liver.

Cayenne Pepper

Cayenne pepper is another thermogenic fat burner. Its key ingredient is capsaicin. This has been shown in numerous studies to boost the metabolism. Another way that capsaicin is believed to help reduce body fat is by encouraging catecholamine secretion from the adrenal medulla. Catecholamine is a hormone which is released in response to stress and speeds up the metabolism.

According to a 1999 study, capsaicin may also act as an appetite suppressant, as well as decreasing the consumption of dietary fat.

Cayenne pepper has also been shown to increase the activity of genes that are associated with fat metabolism.

A study published in the Journal of Nutritional Science and Vitaminology had a group of healthy adults taking a supplement that combined green tea extract and capsaicin at a blend of 0.4mg of capsaicin and 625mg of green tea extract. The study participants were told to follow their normal eating and exercising habits. After only two weeks the following results were exhibited:

  • Average body fat percentage was lowered in both males and females
  • More than 70 percent of the volunteers lost a significant amount of body fat
  • The study participants who started with higher body fat percentages were able to lose more weight than others
  • All participants increased their Resting Energy Expenditure (REE), which is a sure measure of increased metabolic rate
  • The average weight loss was 460 grams over a period of just two weeks
Cayenne pepper slim

A second study which combined capsaicin and green tea showed significant thermogenic increases. This study was undertaken at the Laboratory of Applied Physiology at Kyoto University in Japan. It focused on examining the effect of the two-combination supplementation on sympathetic nervous system activity. This is a key marker of energy expenditure and thermogenesis.

After taking the supplement, the volunteers were tested on their heart rate variability over the period of an hour and a half. The heart rate activity was significantly improved in all volunteers. There was also an increase in energy expenditure. This was seen with no adverse effect on the cardiovascular system of the volunteers.

A third study focused on overall weight loss over a period of eight weeks. The combination of the two supplements gave female study participants a combination of 125mg of green tea and 25mg of capsaicin. The women were old to take two tablets with lunch and two more with dinner each day. The results showed an average weight of 1.8kg over the eight-week period. BMI was reduced by 0.7 kg.m2. In addition, insulin concentrations were significantly reduced.


Glucomannan is a dietary fiber that is extracted from the konjac plant. It has been clinically seen to be an appetite suppressant, with the ability to swell up in your stomach. The result of this is that you will feel fuller and be inclined to consume fewer calories. Acting in concert with the appetite suppressant qualities of Cayenne pepper, glucomannan will be even more effective.

Caffeine Anhydrous

We all know that caffeine is a stimulant – in fact, it’s the most popular one in the entire world. The anhydrous form used here is the purest that you can get. It works in three ways to support fat loss:

  • Enhancing energy levels
  • Boosting the metabolism
  • Increasing total power output

There is an inhibitory neurotransmitter in your brain called adenosine. It binds to receptors and decreases cell activity to make you feel sluggish and sleepy. Caffeine anhydrous is very similar to adenosine. In fact, it is able to trick the brain into thinking that it is adenosine, so that it binds to the receptors instead of adenosine. However, instead of making us feel sluggish and sleepy, caffeine has the opposite effect. It actually increases cell activity. The result is that you feel more awake, more alert and more powerful.

In addition to its physical effects on the brain, anhydrous has also been shown to have a number of mental benefits. It helps us to improve our reaction time, boost out logical reasoning ability and enhances our focus. All of these things are a major plus when you’re getting zoned in on a terrific workout!

caffeine fat burner

The ability to focus that comes with caffeine anhydrous supplementation is a great benefit when you’re on a weight loss or cutting diet. It will make you more able to handle the reduced caloric intake while also working your butt off in the gym. It will allow you to train harder for longer. In one study involving sprinters, caffeine supplementation was shown to improve power output and boost overall performance in contrast to a placebo group who did not take caffeine.

Another study showed that caffeine supplementation led to a significant increase in metabolic rate over the course of the day.

Instant Knockouts caffeine anhydrous is dosed at 300mg per serving. This is the upper end of the required dosage to bring optimal results without bringing on such negative side effects as the jitters and a post workout energy crash. 300mg also fits in well with the dosages used in many clinical studies.

Vitamin B6

Also known as pyridoxine, Vitamin B6 helps to boost the effectiveness of all of the other ingredients in Instant Knockout. It has been shown to improve the way that we synthesize energy. It also acts in concert with the other ingredients to boost the metabolism and increase fat oxidation. When you supplement with B6, your body will better absorb amino acids to enhance muscle building. It has also been shown to regulate intake of carbs and fats so that you can better control your diet.

Vitamin B12

Vitamin B12 has a proven ability to enhance the ability of the body to convert carbohydrates to glucose for your energy requirements. It also helps to more effectively break down fatty acids as well maximizing protein synthesis.

GTF Chromium

Chromium is an essential trace element which many people are deficient in. It’s fat fighting power lies in its ability to help regulate insulin levels. Chromium contains a key protein called chromodulin. It has been shown to improve the body’s ability to metabolize sugar and fat. As a result, you will have more energy to work out. It will also help to reduce your food cravings and boosts the metabolism. This results in lowered overall caloric intake.


Zinc is a proven booster of testosterone. In addition, it helps to enhance the body’s absorption of carbs, fats and protein. This will maximize your energy levels, which is very important when you are training hard in the gym.

In one study, supplementation with zinc over a period of eight weeks improved glucose metabolism and fat levels in the blood. In another study, it was shown that lower levels of zinc gave people an increased risk of weight gain.


Piperine is the active ingredient in black pepper. It has been shown in a number of studies to boost the metabolism, improve digestion, increase the thermogenic effect and, amazingly, suppress the formation of new fat cells!

On top of all of this, piperine turns on two key fat burning receptors – TRPA1 and TRPV1. These two receptors will elevate energy metabolism and suppress fat cell accumulation.

Green Coffee Bean

Green Coffee Beans are unroasted coffee beans. Yet there is no caffeine in this compound. As such, it is not a stimulant. Its key ingredient is cholorogenic acid, which has been seen to slow down fat absorption from food.

Chlorogenic acid is also able to reduce sugar cravings as well as lowering cholesterol levels. One study showed that adding green coffee bean to the diet led to a reduction in body mass and, more specifically, belly fat.

What About the Dosages?

instant knockout dosages

It doesn’t matter how good the Knockout ingredients are, if they are not properly dosed, they won’t be of any benefit. This is the problem with many supplements out there. Most of them are underdosed, but over-dosing can also cause serious problems, especially if you’re talking about caffeine.

So, how does Instant Knockout fat burner stack up?

Very well, in fact. We are genuinely impressed with the dosages on all of the ingredients in this product. They are all fully dosed, providing you with the clinically appropriate amounts of each ingredient, without going overboard. Here’s the breakdown:

• Vitamin B6 – Instant Knockout contains 5 mg

• Vitamin B12 – Instant Knockout has 10 mcg

• Zinc – Instant Knockout contains 10 mg

• GTF chromium- Instant Knockout has 100 mcg

• Green tea extract- Instant Knockout contains 500 mg

• Green coffee extract- Instant Knockout has 100 mg

• Cayenne powder- Instant Knockout has 100 mg

• Glucomannan- Instant Knockout contains 1800 mg

• Caffeine anhydrous- Instant Knockout contains 300 mg

• Black pepper extract- Instant Knockout has 10 mg

Take this product four times per day. Spread your intake over the day, taking one capsule in the morning, one before lunch, one in the afternoon and one before dinner.

Summing Up the Instant Knockout Ingredient Profile

We’ve gone quite in-depth on the ten ingredients in Instant Knockout fat burners for a reason – to reveal that each of them has some pretty solid scientific backing to support it.

It’s only when you compare this to the ingredient profiles of many competing products out there that you can appreciate how good the Instant Knockout profile is. Not only are all of these ingredients clinically backed, but there are even studies to show that the combination of them used here will make them even more beneficial in terms of their fat-fighting ability.

How Effective is Instant Knockout?

So, we’ve established that Instant Knockout has a pretty impressive ingredient profile. But how good is it really?

We can state unequivocally that Instant Knockout will DEFINITELY help you to lose body fat. The first and most noticeable effect is that it will reduce your appetite. This will lead to a reduced caloric intake and subsequent weight loss.

The second thing you’ll notice with Instant Knockout is that your metabolism will be boosted. You’ll have more energy for your workouts and will more efficiently burn through both carbs and fats for energy.

Thirdly, Instant Knockout will give you more focus to allow you to zoom in on your workouts, more strictly maintain your low carb or cutting diet and generally be more positive and switched on.

The synergistic effects of these actions WILL result in fat loss. However, you need to be very well aware that Instant Knockout is a supplement – it is NOT the main course. Eighty percent of your fat loss results will come (or not come) as a result of the whole foods that you put into your mouth. Another fifteen percent will come as a result of your workouts. That leaves just 5 percent to come from supplementation. Unless you’ve got those other two components on point, supplementing with Instant Knockout will do very little for you. But, when you’ve got all three areas humming in unison, the results can be quite astounding!

Instant Knockout Reviews by Users

Review by Costa Kyrgousios


I have been using it for three and a half months now and I can tell you this stuff is magical. I’m losing 2 – 2.5 kg (4.5 – 5.5 pounds) per month without any side effects and the results are constant month in, month out. In a few months, 15% body fat will be a reality. I’m so happy about that. And yes, I recommend Instant Knockout with all my heart to everyone serious about losing body fat.

Review by Dan Mack


Initially not expecting much, I started on day one with my morning pill just before breakfast. Within ten minutes I felt full without taking a bite, naturally, I was a little surprised as I did not expect the appetite suppression to take effect so quickly.

I continued throughout the course, sticking strictly to my diet and consuming the four pills daily. I have since started the same plan again to really pin down the difference on and off Instant Knockout, there is clearly a big difference and my most recent eight week plan has been much tougher without the appetite suppression.

All in all, I would highly recommend instant knockout to anyone struggling to stick to a plan, as much as discipline is important a well engineered supplement makes a world of a difference.

Is it Good Value for Money?

Instant Knockout can only be purchased through the official website.

Each bottle contains 120 500mg capsules. The recommended dosage is to take 4 capsules daily. This means that a bottle will last for one month.

You have the following purchase options:

• One-month supply for $US 59.00

• Two-month supply for $US 118.00

• Three-month supply for $US 185.00

A 90 day money guarantee is offered, but only on the three-month supply option. Free worldwide delivery is offered on the 3-month supply. If you order a two-month supply, you get free shipping to the US and UK, while you will have to pay an additional $7.95 for shipping and handling if you purchase a single bottle.

What’s Not so Good?

To be perfectly honest with you, we have tried to find aspects of this product to find fault with in this review – and been unable! That is how good Instant Knockout is as a fat burning supplement. But there are some issues surrounding the marketing that came to light during this review which we are not fans of.

The first thing that we don’t like is that the 90 day money-back-guarantee only kicks in when your purchase the triple pack option. If you buy the single or double bottle options, then you are on your own. This is not good – the guarantee should be eligible to all purchasers. However, this is a practice that is becoming increasingly common with website only supplements.

Your shipping and handling costs are also tied to your purchase quantity. Buy a single bottle and you’ll be up for an extra $7.95 shipping and handling. Free worldwide shipping only applies to the purchase of the triple pack.

The dosage for this product requires you to take four capsules per day. That could be a challenge for some people. Taking four capsules each day also means that per day cost is quite high.

These are the only negatives we can find with Instant Knockout. However, we believe that this product is so good that we can confidently recommend the triple pack purchase, which actually provides you with a fourth bottle for free! If you do this, then the negatives that we have reported here will be nullified!

What About Side Effects

Because the instant knockout ingredients are all completely natural, there are no major side effects. It does contain caffeine, which may cause side effects if taken to excess. There are 300 mg of caffeine in the product, so, to avoid side effects, you should not take more than one dose per day.

The Final Verdict

As this review has shown, a reason that Instant Knockout is one of the top-selling fat loss supplements on the market – it works, pure and simple. It all comes down to two things:

  • Clinically proven fat loss ingredients
  • Full dosages

It’s a simple formula but one that is pretty rare to achieve in the current market. When you come across a product that does, you should be all over it. Instant Knockout is just such a product!