My Deep Instant Knockout Review With Results From Real Users

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Instant Knockout Review featured Image featuring box & bottle

In this Instant Knockout Review article I’ll share my deep dive into this highly-regarded weight loss supplement, reveal the science facts on its active ingredients, & show you before & after photos of real customers too.

I’m very familiar with Instant Knockout Cut, the calorie-burner/appetite suppressant product we’ll be looking at today. I never used it, but I know people who did & will share how that went a little later.

Instant Knockout Cut is a popular fat burner, used by fighters to hit their cutting weight for MMA competitions, fitness models & bodybuilders to reach peak body fat % at their photo shoots, & by regular workout people to achieve their weight loss & body transformation goals.

Choosing a weight loss supplement for your fitness journey is important stuff, as is deciding whether you even want to take one at all or not.

So I plan to cover all the key features so that you’ll have all the facts you need to see if this metabolic rate booster is right for you.

green test tubes icon - heydayDo image

Science Resources Included

As is my custom here on heydayDo, I will provide links to all of the relevant sports science & medical resources, clinical studies, and nutritional data used in this article.


What’s coming up

Here’s a quick list of the categories I’ll be going over, so you get an idea how this article will flow:

  • Quick reveal summary
  • About Instant Knockout & fat burners
  • How Instant Knockout works
  • Customer reviews & success stories
  • Price & cost/month, deals
  • Dosing & directions for use
  • Ingredients & their clinical results
  • Safety & side effect considerations
  • FAQs
  • Instant Knockout competitors
  • Who makes Instant Knockout?
  • Wrap up


My Instant Knockout Cut bottom line reveal

Sometimes I like sharing a short version of my concluding opinion here at the beginning of an article. (But if this were a movie I was telling you about, I’d never reveal the ending; I’m no spoiler 😄).

Anything I touch on here I’ll get into their fact-filled details later.



* Instant Knockout Cut works for women & men alike and is vegan-friendly.

* Instant Knockout Cut is popular among physique & bikini models, MMA competitors, & athletes because it can help anyone lose weight & shed their body fat if they’re willing to use it correctly.

* The ingredients in Instant Knockout Cut provide you with two tools for burning fat & dropping pounds: appetite control & metabolism boosting via its thermogenic properties.

* Clinical science trials testing the active ingredients in Instant Knockout Cut verify that each ingredient has shown an ability to assist in weight loss in one way or another, through:

  • appetite suppression
  • calorie-burning
  • fat oxidation
  • metabolism enhancers
  • increased energy for workouts

* Instant Knockout strongly advises that you control your diet & work out regularly in order to maximize your results & achieve your fitness goals.

* All the people who’ve achieved amazing body changes followed that Instant Knockout’s advice I just shared. Those who didn’t follow it leave 1-star reviews saying “It didn’t work”.

Instant Knockout Cut box & bottle

About Instant Knockout & its fat burning, weight loss potential

No worries if you’re unfamiliar with any of the sports science terms I used up there in my summary; I’ll explain them all along the way.

These terms are describing the processes that the ingredients used in Instant Knockout perform.


Thermogenesis & metabolism boosting

Let’s start with thermogenic, a word that describes certain drugs & supplements that increase your body’s metabolic rate by creating heat.

Having a higher metabolic rate can actually increase your body’s energy expenditure, meaning that you’ll burn more calories on an ongoing basis.

This leads to a greater ability to lose weight than you had before these ingredients increased your metabolism, and Instant Knockout has a few effective metabolic boosters in its formula.


Fat oxidation

Instant Knockout also contains a fat oxidizer, meaning an ingredient that has the ability to break down your existing fat cells.

When our bodies engage in fat oxidation, it can lead to weight loss by using stored fat as fuel for energy, thereby reducing overall body fat and promoting a leaner physique.


Appetite suppression

While the metabolism boosters & oxidizers in Instant Knockout are busy burning off fat & calories, another very important activity is going on: appetite suppression.

The main ingredient (by weight) in Instant Knockout is glucomannan, a form of dietary fiber, and it has the ability to reduce your appetite & hunger pangs significantly throughout your day.

You’ll feel full for longer, even as you find yourself eating less at meals, or not feeling like a lot of in-between or late-night snacking either.

I’ll share more about it down in the Ingredients section.


How Instant Knockout works

So combining all of these mechanisms of action is how Instant Knockout accomplishes its tasks & greatly assists you with your weight loss & body transformation goals:

  • metabolism enhancing & increased calorie burning;
  • fat oxidation;
  • appetite reduction.


But Instant Knockout can’t do it alone

Up in my Summary section I compared two groups of people: those who took Instant Knockout as directed, had consistent workouts, & controlled their diet…versus the people who took Instant Knockout but didn’t bother fixing their diet or exercise program.

It’s so important to not only take Instant Knockout just as they tell you to, plus do your part by being faithful to your body goals by having a solid diet+workout combo going for you too.

Bottom Line: Instant Knockout will help you achieve amazing results if you’re on board with their plan, but it won’t work at all for someone who has a crappy diet & doesn’t work out.


Here are before & after photos from two people who made it happen:

Male & Female Instant Knockout Customers before & after pics

Customer reviews & success stories

There are dozens & dozens of body transformation success stories from people who’ve shared their before & after pics along with their testimonials, proving Instant Knockout can be very effective for all kinds of people.

The reviews are very positive, and the testimonials shed light on many of the happy customers’ weight loss & fitness journeys too, which is inspirational stuff.

Instant Knockout even posts photos & stories from people who’ve just started losing weight, or who haven’t lost much due to this or that; I liked the honesty.


 How real people achieve body transformation success

The people who accomplished the most obviously took that advice from Instant Knockout to heart:

  • take Instant Knockout Cut exactly as prescribed;
  • control your diet;
  • work out regularly.

Some of these “success story” people share bits of how they went about it, and the common theme was simply following that easy-to-understand Instant Knockout plan.


Dissatisfied customers

When I was researching info for my article Leanbean vs. Instant Knockout, I made it a point to snoop around for dissatisfied customers of both products.

Leanbean’s 1-star reviewers vented on Trustpilot, Instant Knockout’s unhappy campers were on Amazon.

Anyway, I read all the negative reviews there…“Didn’t work”, “It didn’t do anything”, “I didn’t lose any weight”, etc.

But not a single 1-star review said anything about how the person controlled their calories or worked out 4-5 times a week, along with taking Instant Knockout exactly as prescribed…and that it still didn’t work.

Not a word proving that they truly made the lifestyle changes needed to get the most out of the supplement they paid for.


Link to customer testimonials

Instant Knockout Cut testimonials & photos

That link above will take you to the page where a few customer testimonials & photos are; they begin about halfway down the page.

After those — to get to all of the before & after photos, click the black View More Testimonials button.

Here’s a sample of two more Instant Knockout customers who’ve enjoyed impressive body transformations:

Instant Knockout Customers Before & After photos

Dosage and Directions for Use

Super important: I strongly suggest you take Instant Knockout Cut exactly as they advise you to.

There are two big upsides to this:

  1. you’ll help maximize the potential weight loss benefit that Instant Knockout can provide you;
  2. you’ll avoid the negative side effects & possible health risks that come if you overdose on its powerful active ingredients.


When & How to take Instant Knockout

Daily dosing size: 4 capsules, by taking 1 capsule at a time 4 times a day. Follow each capsule with at least 8 oz. of water.

Here are the advised time frames for your 4 doses. Take the:

  • 1st one as soon as you wake up,
  • 2nd one in between breakfast and lunch,
  • 3rd one 1 hour after your lunch,
  • 4th one 1 hour before your evening meal.

Other points to follow:

  • Your last dose should be taken no later than 5 hours before bedtime.
  • Do not exceed four capsules per day.
  • Be consistent with your dosing: don’t skip doses & don’t double up on a dose either.


Drink plenty of water

Staying hydrated by drinking ample water throughout the day is a biggie, particularly when taking supplements like the glucomannan in Instant Knockout.

To maximize glucomannan’s positive effects & to avoid unwanted ones, it’s important to consume it with plenty of water so that it expands in your stomach and not higher up in your digestive system.


Don’t let caffeine mess with your sleep cycle

A gentle reminder that in order to prevent caffeine from disrupting your sleep, be sure to take that last dose at least 5 hours before you go to bed.


How to avoid unwanted side effects

I go over this in more detail down in the Safety section. But for now, let me pass along that unwanted effects are very unlikely when you take Instant Knockout just as they tell you to.

Problems arise only when someone goes off-plan & takes more pills than prescribed.

Simply following the dosing instructions is the easiest way to avoid unwanted side effects.

Instant Knockout Cut bottle

Instant Knockout Cut Ingredients and Formulation

Here’s an image of the Supplement Facts label so you can check out the ingredients in Instant Knockout Cut.

The Serving Size you see is actually your total daily dose.


Instant Knockout Cut Supplement Facts

Instant Knockout Cut Supplement Facts

Glucomannan (konjac root)

Bottom line: This is the powerful appetite suppressor I mentioned earlier. It’s one of the most important ingredients in Instant Knockout Cut, as far as your weight loss journey goes.

I can tell you that glucomannan is a mighty tool in the fight against overeating.

Derived from the konjac plant, this soluble fiber works by helping you feel full before mealtime, ultimately leading to you eating less at each sitting.

If you’re looking to improve your overall health, glucomannan may be the answer. Clinical research has found that it can aid in weight loss, regulate blood sugar levels, improve cholesterol levels, and enhance digestive health.

It’s important to note that numerous studies have found glucomannan to be a powerful weight loss tool, but two conditions must be met in order to see results: taking it as prescribed before meals and avoiding any calorie surplus (consuming more than you need).

To reap these benefits, the daily glucomannan dose recommended is 2-4 grams, with Instant Knockout Cut’s 1.8 g in range on the low end.

Note however – that a clinical study on obesity discovered that individuals who did not alter their eating habits or exercise routine did not experience weight loss when taking glucomannan.


Instant Knockout’s power trio

Bottom line: These three ingredients are the important metabolism boosters in Instant Knockout Cut; they all work together to either boost your metabolism, increase your calorie burning, or oxidize your fat.

These are:

  • caffeine
  • green tea extract
  • capsaicin

The supporting research for all of these is very encouraging, which is always a good thing.


Caffeine Anhydrous

From my research, it’s clear that caffeine anhydrous has been extensively studied in both sports science and medical clinical research.

It’s a a common ingredient you’ll see in most of the top-selling pre-workout supplement powders too. Caffeine anhydrous is added to those products based on its proven ability to improve energy, athletic performance, and aid in weight loss.

Caffeine has been linked to an improvement in resting metabolism, which ultimately helps to boost your energy balance (that’s your “calories in vs. calories burned”).

As a result, incorporating caffeine into your routine could help you burn more calories during periods of inactivity compared to not taking caffeine at all.

Instant Knockout’s 300 mg daily dose of caffeine is equal to approximately 3 cups of coffee, divided into four separate doses throughout the day…so less than a cup’s worth of coffee each dose.

Reminder time: Make sure you take the fourth dose of  Instant Knockout several hours before bedtime, so the caffeine won’t interfere with your sleep.


Green tea extract

Green tea has compounds in it called catechins, and they’ve been well-studied for the benefits they can provide towards our weight loss.

According to research, green tea catechins have been found to have a positive impact on weight loss, as they help to increase the body’s energy expenditure (calorie burning) and fat oxidation processes.

Regularly consuming green tea catechins can decrease body weight and help maintain the lost weight, as supported by analysis of over a dozen green tea studies.


Capsaicin (via cayenne powder)

Capsaicin or capsaicinoids are the active compounds in red peppers, and they’ve shown they can provide benefit to our weight loss journey in a couple of ways:

  • appetite suppression
  • calorie burning
  • fat breakdown

* Taking capsaicinoids before meals decreased the amount of calories eaten, per an insightful meta-analysis of eight studies.

* Another review of multiple clinical trials on hot pepper compounds found that they increased calorie burning & fat breakdown.


Female Instant Knockout Cut Customer's before & after pics

(another Instant Knockout success story)



This natural amino acid is commonly found in green tea and other teas, as well as in certain mushrooms.

Strong research has shown l-theanine to be a powerful tool for reducing stress and anxiety.

Additionally, it has been found to mitigate some of the negative effects of caffeine, such as jitters and increased heart rate.

I know firsthand that l-theanine is effective at mellowing out caffeination vibes. I used to take it with my morning coffee to relax coffee’s nervy-ness, but keep its focus.

I think it’s a great idea Instant Knockout added l-theanine to this formula.


Black pepper extract (piperine)

I can attest to the potential benefits of black pepper extract for energy metabolism & fat oxidation.

This extract contains piperine, an active compound that has been linked to an increase in thermogenesis & a slowing of fat cell growth, both of which can assist with weight loss.

Instant Knockout likely included black pepper extract to provide an effective and natural way to boost your metabolism and to improve overall nutrient absorption.


Vitamin D3

D3 is a much-studied vitamin, and the benefits it can provide in all sorts of situations is well-documented. I think it’s a solid add to Instant Knockout Cut.

Here are the three reasons it’s probably been added to a weight loss supplement that is used by people who are working out consistently:


Vitamin B12 & B6

Neither of these B vitamins contribute directly to weight loss, appetite suppression, or calorie burning like all the others. Still, I think their inclusion into Instant Knockout Cut is a good move, & I’ll tell you why.

First though, I think Instant Knockout’s given reasons for having B6 & B12 included aren’t real solid, because I don’t think much of the research studies they reference.

No matter. I like that these B vitamins were added to Instant Knockout because dieting & weight loss usually means eating less. And eating less can often mean we’re consuming less vital nutrients, like vitamin B6 & B12.

So it’s a good thing that a fat-burner pill maker supplements their formula to help with any potential nutritional deficiency.

Instant Knockout Cut box in a gym - Leanbean VS Instant Knockout image

Instant Knockout Cut safety & side effect considerations

Bottom line: I highly recommend following the instructions provided by Instant Knockout when incorporating their supplement into your routine. Doing so not only ensures your safety and helps you avoid negative side effects, but also allows you to reap the maximum benefits of this powerful product.

Trust me, it’s worth it!

When taken as prescribed like I explained in the Dosage & Directions for Use section, Instant Knockout Cut has proved itself to be well-tolerated with thousands of users having never reported any serious safety event or health problem.

Here’s a “safety first” set of orders from me to you 😊:


Stick to Instant Knockout’s dosage amounts & schedule

  • Don’t ever take more than the 1 pill per single dose;
  • Don’t take more than the prescribed 4-pill daily amount, ever;
  • Don’t “double up” on an individual dose during the day to make up for a missed dose.

Now let’s briefly look at potential side effect risks caused by overdosing Instant Knockout’s two most powerful ingredients (symptom-wise), glucomannan and caffeine anhydrous.


Possible health risks with glucomannan

To ensure your safety when taking glucomannan, it’s important to follow the prescribed dosage and consume plenty of water.

Taking these simple steps can help you avoid potential health risks such as digestive issues, intestinal blockages, and interactions with medications.

Before taking glucomannan, consider talking with your doctor if you have issues or concerns.


Possible health risks with caffeine

The daily dose of 300 mg of caffeine anhydrous is around 3 cups of coffee, and it’s spread over the course of the whole day & into 4 doses hours apart from each other.

No safety issues are likely to occur at all while following this schedule as instructed by Instant Knockout.

Talk to your doctor if you have issues with caffeine even in moderate amounts.


Here’s a short video from a professional MMA coach of elite-level competitors in the mixed martial arts.



Here are answers to a few common questions asked about Instant Knockout.

How long does it take to see results from taking Instant Knockout, and what kind of results can I expect?

Results vary based on your diet, exercise routine, age, fitness level, & other factors.

You can expect to see improved energy, increased fat loss, and enhanced muscle definition within 4-6 weeks.

Does Instant Knockout come with a money-back guarantee, and what are the terms and conditions?

Instant Knockout comes with a 90-day money-back guarantee. If you are not satisfied with the product, you can return it for a full refund.
The product must be unopened and in resalable condition.

How does Instant Knockout compare to other fat burners on the market in terms of effectiveness and safety?

Instant Knockout is a safe and effective fat burner, backed by scientific research and high-quality ingredients.

Compared to other fat burners on the market, it stands out for its natural ingredients and lack of harmful additives.

Its results speak for themselves, making it a top choice for those seeking a safe and effective fat loss supplement.


Instant Knockout Cut competitors

Here are a few of Instant Knockout’s biggest competitors. I haven’t reviewed any of them except Leanbean, where I did a head-to-head comparison between it & Instant Knockout in this article:

My Leanbean vs. Instant Knockout Bout For The Fat-Burner Crown

I know people who are & were taking Instant Knockout, & I know someone who tried Leanbean, but I haven’t come across anyone who’s used any of these best-selling fat burner/weight loss supplements.

I plan on writing up reviews of these thermogenic aids (& testosterone boosters too) after I get some “real user” feedback from someone.

Here’s a list of them if you want to check them out:

Nutrex Lipo-6 Black Ultra

Nutrex Lipo-6 Black Ultra


MuscleTech Hydroxycut Hardcore Elite

MuscleTech Hydroxycut Hardcore Elite


Nutrex Lipo-6 Black Hers Ultra

Nutrex Lipo-6 Black Hers Ultra

Who makes Instant Knockout?

Instant Knockout’s parent company is Roar Ambition Ltd. based in the UK. They have a handful of fitness supplements besides Instant Knockout, & a few of them are very popular too, including the testosterone boosters TestoFuel and Prime Male.


Related articles here on heydayDo

Easy Effective Skinny Fat Workout for Women & Men

Creapure vs. Creatine Monohydrate: Not All Creatine Is Created Equal

Bowflex Blaze Review: Because “Flaming Fitness” Was Too Dramatic

Creatine vs BCAA: Less of a Battle, More of a Ballet

All About the Amazing Low-Impact HIIT Workout

Mystery No More: Do You Take Creatine On Rest Days Or Not?

Do Resistance Bands Build Muscle As Well As Free Weights?

Are BCAAs Worth It, Or Just Buzz Without The Bang?

My Hands-On Vega Sport Vegan Protein Powder Review

What Happens If You Lift Weights But Don’t Eat Enough Protein


Wrapping up: Is Instant Knockout worth it?

Bottom line: It’s easy for me to recommend Instant Knockout Cut.

* It has effective ingredients backed by legitimate scientific research, & it’s very safe to use when taken as prescribed.

* Dozens of personal testimonials from real people along with before & after photos prove that Instant Knockout Cut can greatly assist anyone’s weight loss journey.

* However I do believe that if the diet & workout routine aren’t on board as well, these pills will not miraculously turn someone’s body around.


Instant Knockout is a great choice for you if:

  • you’d like to lose weight safely, and want to create a positive body transformation for yourself;
  • you can take the supplement as prescribed, following the daily dose schedule as advised by Instant Knockout;
  • you control your calorie intake & diet, and you keep a consistent workout schedule going.

Instant Knockout is not right for you if:

  • you’re not willing to manage your diet;
  • you’re not willing to exercise;
  • you don’t want to consume caffeinated products.

I hope this Instant Knockout review has been useful to you, & I wish you well on your fitness journey.

– greg


Instant Knockout Cut box & bottle & pills


About The Author

heydayDo author Greg Simon

Hi, I’m Greg Simon. Fitness training & nutrition researching since 1982. ISSN (International Society of Sports Nutrition) Pro Member. MBA, B.Sc.

Author. Surfer. Organic food grower. Congenital heart disease survivor (so far). is my wellness blog that’s about encouraging a healthy lifestyle as we age. 

I share my fitness training experience as well as the sports science research I’ve done on the many benefits strength building, exercise, & good eating habits offer us. 

I also write review articles after product testing home gym equipment & fitness supplements.

My hope is that you’ll find useful or encouraging information here on my website that will benefit your unique fitness journey.

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