Nutritionist Weighs In: Instant Knockout CUT Fat Burner Review

Instant Knockout CUT Review

While I’m a proponent of fat burners as a nutritionist, there’s a lot of junk out there that does nothing except burn a hole in your wallet – and in rare cases, causes ugly side effects.

But once in a while comes a fat burner worth checking out, and today we have one such supplement, which I’ll dig deeper into in this Instant Knockout CUT review.

Overview of Instant Knockout CUT

Instant Knockout CUT is a weight loss supplement that was originally developed for athletes and pro boxers. The makers say that because of its success, IKO was eventually released to the general public.

Instant Knockout CUT has a serving of four 500mg capsules per day. While this isn’t like most fat burners, it’s part of the reason why IKO CUT works better than many other weight loss supplements. Having 4 capsules evenly spread throughout the day will keep your body in a fat-burning state – while also protecting from muscle loss.

Instant Knockout CUT has several key ingredients to aid your weight loss efforts and activate a ‘whole-body burn,’ boosting up your energy production and metabolic rate modestly.

In 2021, the Instant Knockout formula has been updated to “CUT 2.0” to enhance fat burning and muscle toning without the jitters.

Few fat burners today have the backing that Instant Knockout CUT has – being endorsed by elite athletes from all around the world. Pro MMA fighter Diego Sanchez and coach Greg Jackson, for example, both used Instant Knockout to cut down two weight classes.

Official website:

You’re asking – how does Instant Knockout CUT work? Good question; let’s have a look below!

How does it work?

Instant Knockout CUT helps you drop pounds through 3 key mechanisms;

  • Kicks your metabolic rate into a higher gear.

Your metabolism is responsible for converting food into energy for cellular function. Having a higher basal metabolism allows you to burn calories more efficiently, oftentimes to the point where your body starts burning its stored fat for energy.

This is why some people seem to be able to eat anything they want without gaining a pound! Instant Knockout works to push you in that direction – stimulating your body to start burning fat because your energy needs suddenly exceed your calorie intake.

  • Reduces food cravings.

There’s not much benefit to burning more calories if you’re going to consume it all back! It’s human nature to crave foods when we’re feeling low and moody, which helps satisfy our desires but at the same time, switches off your fat burning and promotes fat storage.

Instant Knockout uses natural fiber-based ingredients that swell in your stomach to keep you full, while also stimulating neurotransmitters in your brain that suppress appetite.

  • Elevates your energy levels.

Whether you’re doing cardio, weight training, or endurance exercises, chances are you’ll feel drained and exhausted during and after your sessions.

Instant Knockout CUT contains a clinically dosed amount of stimulants that help fuel your training sessions and keep you feel great throughout the day.

What makes Instant Knockout CUT different?

Okay, so what is it about Instant Knockout CUT that is so special?

If you’ve followed any health and fitness posts on Facebook, YouTube, or other social media, you’ve likely come across suspicious fat burner ads that fill your newsfeed and promise a whole bunch of nonsense!

Here’s the truth: the weight loss industry is a massive business. This naturally brings many black sheep into the industry, promising false lose-weight-quickly schemes.

However, my typical suspicion about Instant Knockout quickly dissipated when I saw that there is a lot of backing from professional fighters and MMA coaches.

MMA is the one sport where they take supplements more seriously than anyone else. 1 pound can make the difference between reaching the goal and not making weight.

The company behind IKO CUT, Roar Ambition, wanted to make the most effective fat burner and identify natural ingredients with a strong scientific pedigree to help athletes get rid of fat and retain muscle. Looking at the excellent reviews online, I’d say they did a pretty good job!

Is Instant Knockout Cut Good for Women?

Yes. Instant Knockout is made for both men and women. In fact, if you look past the marketing, there’s no gender-specific fat burner.

There are fat burners with ingredients that are proven to work, and those that aren’t. Plain and simple!

As you’ll see below, Instant Knockout CUT currently uses some of the most effective natural fat burners on the market and is praised by many female customers.

If you’re interested, there’s a “For Women” section on Instant Knockout website that has more information, see it here:

How does Instant Knockout CUT fare against our top Women’s Fat Burners? See the link below!

>Top 3 Female Weight Loss Supplements of This Year<

How to Use Instant Knockout CUT

Every time I use supplements like fat burners in my training programs, people often ask “what time of day is best to take these supplements?”

A single dose product is usually easy to take, but the downside is that the effects wear off until your next dose. Instant Knockout CUT, on the other hand, is designed to give you maximum nutritional value throughout the day by continuously supplying your body with beneficial ingredients – 4 pills split throughout the day.

This not only gives you a cleaner stream of energy, it also maintains a higher calorie burn 24/7.

However, you’d be right for saying that 4 capsules per day is a little annoying and hard to remember. According to several athletes who use Instant Knockout, it’s helpful to set a reminder on your phone or make it a habit to take your capsule with every meal.

One thing I would add to this – you should take all the pills by 6 PM or earlier. Taking Instant Knockout CUT too close to bedtime can make it hard to fall asleep due to caffeine in it.

[RELATED: Instant Knockout Complete Weight Loss Shake Review]

Instant Knockout CUT: The Ingredients

The Instant Knockout CUT ingredient profile has been improved over the Instant Knockout Original, delivering faster and more significant benefits further.

While the formula is still completely transparent and free of proprietary blends, it’s also vegan friendly and includes vitamin D3, a powerful vitamin-hormone that enhances CUT’s fat burning effects significantly.

Now that it’s been upgraded many argue it’s the very finest fat burner on the market. Looking at its ingredients, I’m inclined to agree.

What are the ingredients in Instant Knockout CUT? Let’s take a look;

  • Green tea extract:

Green tea extract is one of the most effective fat burners. Evidence from studies shows green tea can boost your metabolic rate and calorie burn through a process of thermogenesis by up to 15%. This is on top of the energy kick it provides.

  • Cayenne pepper seeds:

Cayenne pepper seeds are full of capsaicin, a bioactive compound known to melt fat. There’s plenty of research showing capsaicin has similar thermogenic effects as green tea extract. Capsaicin also has the ability to block appetite and food cravings – helping to limit your calorie intake.

  • Glucomannan:

Glucomannan, or Konjac Plant, is a dietary fiber that swells in your stomach, reducing appetite in the process. Once it enters your stomach, Glucomannan expands and starts to make you feel like you’ve eaten more than you have. As a long-chain, complex carbohydrate, Glucomannan takes long to digest, greatly helping against food and sugar cravings.

  • Caffeine anhydrous:

The most well-known stimulant in the world, caffeine helps to block adenosine receptors, stimulating your central nervous system. Caffeine gives you the power to blast through hard workouts. By raising your energy levels, caffeine makes your metabolism burn more calories. It also helps with focus and concentration – increasing your willpower to avoid snacking. The dose of caffeine in Instant Knockout is strong, but since it’s spread apart in 4 even daily doses, it’s safe and gentle enough to be giving you a clean boost without the ‘crash’.

  • Vitamin B6:

Vitamin B6 ties the whole Instant Knockout CUT formula together. It’s an integral part of dozen metabolic processes and directly promotes fat burning by boosting fat oxidation and elevating your metabolism.

  • Vitamin B12:

Vitamin B12 assists in the conversion of food into energy. It also helps your body break down fats, improves blood sugar regulation, and maximizes protein synthesis – helping you to retain muscle on a calorie deficit.

  • Vitamin D3

Vitamin D3 is key part of your immune system and is crucial for testosterone production in men. Inadequate testosterone levels can lead to weight gain and ‘man boobs’. Meanwhile, low vitamin D levels can make you susceptible to hypertension and weak bones. Higher vitamin D3 blood levels are linked to lower body-mass index, too.

  • L-Theanine:

L-theanine is a soothing amino acid that enhances the positive effects of caffeine – energy, mood, focus – and stabilizes the negative ones – jitters, crash, low mood. L-Theanine also has some benefits of its own, such as an improvement in concentration, calmer focus (like in mediation), and reduced food cravings.

  • Piperine:

Piperine is the bioactive component of black pepper. Piperine itself is a powerful compound that’s been shown to elevate your metabolism, aid digestion, and even slow down the making of new fat cells – by activating two key enzymes, TRPA1 and TRPV2. Interestingly, this is not the main reason why supplements like CUT feature Piperine in their formulas. The main reason is that piperine enhances the absorption and effectiveness of other compounds in the fat burner, making the whole formula stronger.

Our Thoughts on the Ingredient Profile?

Instant Knockout CUT has a few of the best ingredients I’ve seen in a fat burner.

Is there anything bad about it? I’d say all the key areas are covered. If I wanted to really nitpick, I would lower the caffeine dosage slightly for those who’re extremely sensitive.

If you watch your Starbucks coffee intake, Instant Knockout CUT will have you covered with enough caffeine to give you energy throughout the entire day. And thanks to the smart dosing of 4 evenly split servings and the inclusion of L-theanine, you won’t need to worry about the jitters!

With all of that said, Instant Knockout CUT formula looks highly effective, powerful, and above all, safe and well-studied – just as the manufacturers promised.

Customer Reviews

When it comes to user testimonials and reviews, only a few on the market can compare to Instant Knockout CUT right now.

While their official website features many of these testimonials, here are a few that stood out to me personally;

Maz IKO testimonial

Maz Delacerna: “I had increased energy, stopped eating out of boredom and felt so much stronger at the gym. I was on fire! I tried it for 3 months and bought another 3 months worth. Even after the first 2 weeks on instant knockout I saw results. I was in awe! If you are contemplating on trying it out I highly recommend it.

Instant knockout has hekped me kickstart my journey and I am now a bikini competitor. I camt believe I was once 25kg heavier and now able to be on stage! Thank you Instant knockout for bringing out this product. You have really assisted me in reaching my goals.”

Costas IKO Testimonial

Costas Kyrgousios: “I’m Costas from Greece and as you can see I’m not so young anymore.

A year ago, I weighed 102kg (16 stone) and I was a heavy smoker. Then I decided to do something to improve my health, so I stopped smoking and started working out regularly.

Dealing with sarcopenia (loss of muscle mass and strength as a result of ageing) my goals had to be fat loss and maintaining or increasing muscle mass.

I have been using Instant Knockout CUT 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.”

Does Instant Knockout CUT Have Side Effects?

Weight loss pills, in general, have a bad rep in the fitness industry. Sure, many of them may help you lose weight, but some of them also cause upset stomach, and in some cases, jitters from too much caffeine.

The good news is, Instant Knockout CUT is made of all-natural ingredients, so side effects are really limited. The doses of ingredients are within clinically studied limits, which means they’re safe and also effective long-term.

As I said before, the one area where you will want to watch out is your daily intake of caffeine (if you’re sensitive to it). Instant Knockout has enough to got your covered for most of the day, so one coffee on top of that is enough, more if you can tolerate caffeine in general.

Of course, the standard warnings still apply. For any advice you’ll have to consult your doctor before anyone else! Especially if you have a medical condition.

Needless to say, don’t take Instant Knockout CUT if you’re under 18, pregnant or breastfeeding!

Price and Where to Buy?

If you think Instant Knockout CUT is for you, then you’ll want to visit its official website to get the best prices;

The more you buy, the more you’ll save. While a single bottle of Instant Knockout CUT (1-month supply) costs $59, buying 3 bottles will get you 1 extra bottle for free + fast and free international shipping for $185, which comes out at $46.25 per box!

If you’re not happy with the results of Instant Knockout CUT, you can always reach out to their customer support and they’ll get everything sorted for you. I’ve found their response times to be quick, and their customer service friendly and efficient in general.

Instant Knockout CUT Review Summary – My Experience with this fat burner

As a whole, Instant Knockout CUT is one of the very best fat burners I’ve tested. After three months of trialing the product, analyzing the formula with the team, and reading through other user’s reports, I have to say this is my #1 currently, and the one I’d suggest to my clients for fat loss.

The weight loss effect is noticeable after 2-3 weeks. I’ve tried it during 2 weight cut phases, where each time I got to my goal a few days early. I also experienced a consistent increase in energy levels, which is a nice bonus – it helped me stay more motivated for everyday tasks.

Considering the quality of Instant Knockout CUT and the research that went into it, I would say it’s a reasonably priced supplement – especially if you take advantage of their 3+1 bottles deal with free worldwide shipping.

The fat loss effect is noticeable, and I have tried it during 2 cutting phases, where each time I reached my goals a few days early.

If you decide to purchase Instant Knockout, be sure to comment down below after a few weeks to tell me how it’s worked for you – I’d love to hear about your progress!


  • 100% natural, vegan-friendly formula
  • Developed by the well-known specialist supplements company Roar Ambition
  • Clinically dosed ingredients
  • Transparent ingredient label
  • Promotes increased calorie burning and fat breakdown through thermogenesis
  • Provides a smooth elevation in energy levels
  • I haven’t found reports of side effects
  • Free tracked international shipping and other great deals on bulk purchases


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