Our Instant Knockout Review and Results – Does it work?

Instant Knockout is a natural fat burning supplement that promises to help you burn fat like the professionals. It sounds really good but is it all true? That is what we’re going to find out in this Instant Knockout review.

A while ago we put together an article for bros trying to get shredded.

We found that if you’re stuck at a certain weight despite having a good diet and training hard, that a fat burner is the best solution.

After a ton of research, and reading multiple studies, we finally agreed after this Instant Knockout review that it is the best fat burner on the market.

instant knockout review

In terms of getting completely ripped, it helps in the following ways:

  • Brings out your abs – Lose fat around your torso
  • Keep lifting heavy – Maintain high energy during workouts on a low calorie diet
  • Quit Snacking – Stop cravings between meals

Not only that, but it is currently being used by 2 of the biggest names in the MMA; Diego Sanchez and John Dodson. More on those guys’ experience here.

After that fat burner article went up, we got a lot of emails asking for a more personal review and opinion – rather than just the science.

To do Instant Knockout review, we got in contact with the owners of it, Roar Ambition to learn more about the supplement.

Aside from Instant Knockout, Roar Ambition also ranked #1 in our Top Testosterone Boosters article with their product TestoFuel – we’ve reviewed that supplement as well, you can read it over here.

After we informed them of their victory, we told the guys at Roar that we were looking to personally review both products. To help us out, they generously sent us out a 4 month supply of each supplement, with free T-Shirts.

As there’s only two of us. We thought it’d be best for one to pursue a life of gains on TestoFuel, while the other got ridiculously ripped using IKO.

I’d been meaning to cut for a while, so we thought it’d be best if I was the one to shred up…

Instant Knockout Review Overview – What I learned

  • Leaner than ever before – Push past the hardest parts of a cut
  • Always burning – Constant thermogenesis, feel yourself getting lighter
  • Awesome energy – Despite eating less, I was still killing it in the gym
  • Feel fuller – Crave less food, stay on your diet.
  • Put on less weight – Increased metabolism, process food quicker

Although, there are a few words of warning:

  • Stay on schedule – Missing a dose could damage your results
  • Don’t take it too late – You could have trouble sleeping
  • Use it for a couple of months – The best results come after a few months

I used Instant Knockout for 4 months, I’ve had fat burners before, but nothing like this. When I first started taking it I was at 85kg (187lbs) and around 18% body fat – I was pretty surprised by the results. I’ve summarized my training logs below:

Month 1 – Weight Loss: 1.5kg (3.3lbs)

When I first got Instant Knockout I felt like I was more impressed with the bottle than the actual capsules – The bottle was a badass fist, and after taking it – I realized it hit like one too!

Seriously, bro, I was so aware of the natural stimulants in the first month. I found myself flying through gym sessions, my motivation was higher and I was weight and still hitting the weights hard.

Similarly to Charlie’s TestoFuel article, one our first problems was getting the serving times right. Luckily for Charlie, he was eating 6 meals a day so he could work it around that – but I was intermittent fasting.

The best way I could manage IKO was to take a cap as soon as I woke up and then one every 3 hours until I’d done 4 for the day. After that, all I could think about was training.

Month 2 – Weight Loss: 2kg (4.4lbs)

By the start of month 2 I was down 1.5kg, I’m not saying Instant Knockout did all of this, but it certainly helped. My diet was solid too; clean eats and around 300 calories below maintenance, all within an 8 hour eating window.

It was definitely a combination of these two factors, but I had never lost so much weight while still maintaining all my muscle mass.

After seeing these quick results, I started to take my training on Instant Knockout more seriously.

I added cardio to my workouts – 15 minutes of High Intensity Training at the end of each session. Considering my restricted calories, I don’t think I could’ve stuck it out if it wasn’t for the stimulants in Instant Knockout to keep me going, they really picked me up on sluggish days.

Towards the end of Month 2 I started to notice my waist leaning out. My lower back and ‘love handle’ areas were tightening up as well. I was looking a lot more V-shaped and sculpted.

Month 3 – Weight Loss: 2kg (4.4lbs)

By the start month 3 I had lost a further 2kg (4.4lbs) – That’s 3.5kg (7-8lbs) in 2 months, with all muscle mass still in tact.

Throughout month 3 I noticed I was not only getting a leaner body, but I was also getting a more aesthetic face. My jaw was sharper and I looked better in photos. Although that could be the salt I took out of my diet – either way it was a welcomed bonus.

I was getting close to the physique I wanted now, and was pretty excited to see what I would look like at the end of my fourth month.

Month 4 – Weight Loss: 2.5kg (5.5lbs)

By the end of my course of Instant Knockout, I had lost a further 2.5kg – and I think that’s a safe enough weight for me to stop.

Overall on Instant Knockout I had lost 8kg (17-18lbs). I’ve gone from just shy of 18% body fat, to somewhere around the 8-9% range. Which was far better than I was expecting.

My original lifts at the start of this cut were a hell of a lot tougher to perform by the end of it, but I could still do them. I’m tempted to admit that this is the best I’ve looked in my life.

I’m not saying all the results were Instant Knockout, but I wouldn’t be at this weight without it. It adds the edge that allows you to push yourself further than usual, and cut serious weight to get you looking how you want.

The appetite suppression allowed me to stay on my diet, whereas the thermogenic properties helped with burning more calories. In addition, the natural stimulants raised my metabolism and kept me motivated when I was running low on energy. These three features complement each other well and achieve great results.

I can safely say I’ve never had a more successful cut.

And now…

Now I no longer use Instant Knockout, and with a calculated diet my new weight is relatively easy to maintain, but it can get boring. I still have a cheat day now and then, and it doesn’t seem to cause me a problem.

At the time of writing this Instant Knockout review, I’m 77kg lean and loving it. I’m tempted to bulk at some point and take it again to get the same result at 82kg, although that’s a way down the road.

However if I was going to bulk, I’d use it with TestoFuel. Charlie had some incredible results using this T-Booster and put on a lot of lean muscle – you can actually read more about his progress with it over in his TestoFuel article.

Other bros experiences:

We’ve been looking into a lot of forums, general testimonials and Instant Knockout reviews, to see if it wasn’t just my training and diet that was helping me cut.

Turns out Instant Knockout has been helping a lot of bros.

Take this guy Josh who lost 16lbs in a month:

Just take a look at his transformation:

instant knockout review

And of course MMA fighters Diego Sanchez & John Dodson



instant knockout results

As you can see there are too many mention in this article. But a lot of these correlate with our findings on the best fat burning ingredients which you can find in our top fat burners article.

If you can’t find the ingredient you’re looking for, Instant Knockout have a full write-up of each on their website. You can check it all out here: http://www.instantknockout.com/ingredients/

Room for Improvement

In terms of the supplement itself, the capsules are gelatin. It’s a huge inconvenience for vegetarians as they’ll have to split the caps into some water and drink it up – and with the cayenne pepper. It doesn’t taste great.

One of the main issues we found when doing this Instant Knockout review is that it can only be bought from the supplement’s website. Although it can still be shipped worldwide, it’d be nice to have the opportunity to shop around.

Which brings us to our next concern, the price. At $59.00 Instant Knockout is a premium priced fat burner, it’s not for bro’s on a tight budget.

That said, if you buy more than one box the company gives you more of a discount.

Pricing and Shipping


1 Month Supply: $59 / £35 / €45

1 Box

2 Month Supply: $118.00 ($59.00 each) / £70 (£35.00 each) / €90 (€45.00 each)

2 Boxes
+ Free Shipping in the USA and UK

Ultimate Shredding Stack: $185 ($46.25 each) / £110 (£27.25 each) / €140 (€35.00 each)

3 Boxes
+ 1 Free Box
+ 1 Free T-Shirt
+ Moneyback Guarantee
+ Free International Shipping


Roar Ambition ships from both the UK and USA. International shipping is fast and takes 1-2 weeks for delivery.


Like we said in our other article. This is by far the best fat burner we’ve come across.

In the end I lost 8kg (17-18lbs) using Instant Knockout over a period of 4 months. It took me from 85kg to 77kg (187lbs to 170lbs) and cut essentially just body fat.

It uses the best clinically proven ingredients and the results speak for themselves.

I’m lean, ripped and as strong as I was before the cut. If you’re looking to get absolutely shredded, we recommend Instant Knockout. If you’re also looking to reach the perfect base to bulk from, it’s a great tool to get you there.

If you’re looking to get the most out of it, we recommend buying more than one box – not only do you get a better deal, but it allows you to see what it effects it has on your weight and allow you to plan your diet and exercise around it for the best results.

It’s safe and natural and you can find more information on it over at www.InstantKnockout.com


Q: I skimmed this Instant Knockout review. How many servings do I take a day?

A: This fat burner requires 4 doses a day of 1 capsule. This has been proven to be the best way to keep thermogenesis consistent and for you to be constantly losing weight.

Q: How fast does this stuff work?

A: It’ll all depend on your diet and training, but in our experience: Fast.

I lost 1.5kg (3.3lbs) after a month of this stuff just testing the water – once you’ve started noticing changes though you’ll be motivated to lose a lot more.

Q: Will this fail me on a drugs test? i.e. Any Ephedra, DMAA etc in this?

A: Nah bro. All the ingredients used here are 100% natural. You won’t have any problems. It’s used by Pro MMA fighters that go through rigorous drugs testing before they compete.

Q: Can I just take this and lose weight?

A: Technically you’ll burn more calories than usual. But if you’re using this as an excuse to eat more, you’ll see no real changes. Fat burners are made to take your cut that one step further. To get the best results you need to be on top of your diet and exercise.

Q: Can I take this with other supplements?

A: We don’t recommend you taking TestoFuel with other supplements that contain stimulants – that includes pre-workouts.

Q: Are there side effects?

A: One of the main ingredients in Instant Knockout is caffeine, if you have a low tolerance it may give you some light-headedness for a few days before you get used to it.

Author: James / Founder of BroScience

I started this site back in 2014 because I was tired of the fitness industry telling guys like me lies.

Getting ripped doesn't have to be so hard... I'm here to give you the truth! The no bullsh*t advice.

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