As a fitness instructor, I work with many high-performance athletes daily. It's usually a mix of bodybuilders and ordinary people who need help with their health and fitness goals.
I've also started working with MMA fighters recently, and one of my clients recently introduced me to Instant Knockout. While I'm a fan of fat burning supplements, I'm also very cautious of all the dodgy weight loss supplements out there.
But because of the results I have witnessed, I decided to do some more research and look into the ingredients with a dietitian to put together this detailed Instant Knockout review.
- Made with all-natural ingredients
- Contains a high dose of stimulants
- Need to take four pills per day
- Also suitable for females
- Only available on the official website
- Caffeine Anhydrous
- Green Tea Extract
- Cayenne Pepper Seeds
- Vitamin B6
- Vitamin B12
- Vitamin D3
How It Works
- Assists in fat-burning and weight management
- Increases mental energy levels and focus
- Suppresses the appetite
- Activates thermogenesis
What is Instant Knockout?
Instant Knockout fat burner is a cutting-edge weight loss supplement manufactured by Roar Ambition. This product may help athletes get rid of fat, build more muscle, and support weight loss.
While it was initially developed for MMA fighters and professional boxers, its revolutionary formula of natural, scientifically proven ingredients works well for ordinary people who want to bulk up a bit or lose weight.
Update Aug 2021** Instant Knockout gets rebranded to Instant Knockout Cut. Some ingredients like zinc, chromium and green coffee bean extract were removed and replaced with L-theanine and vitamin D3. They also moved from red capsules to clear capsules to make the product cleaner by removing the Red40 food dye since customers were asking for that.
In 2014, a UK-based parent company named Roar Ambition developed Instant Knockout. It's a company that specializes in natural supplements for sports performance. They keep their fat burner formulation up to date by modifying it regularly.
A UFC champion and MMA legend, Diego Sanchez was one of the first competitors to benefit from Instant Knockout. He's a combat sports champion, UFC Hall of Famer, and multiple award winner.
After receiving positive professional feedback, the Instant Knockout fat burner was made available to the general public.
What Makes Instant Knockout Unique?
What makes Instant Knockout unique compared to other similar products is the fact that it is designed to assist athletes and bodybuilders in losing weight while maintaining muscle mass.
Instant Knockout is a popular fat burner designed to help individuals burn fat and lose weight while preserving muscle mass.
My suspicions about Instant Knockout fat burner were instantly reduced when I saw a lot of backing from MMA fighters and coaches like Diego Sanchez and Greg Jackson.
What Are The Benefits Of Instant Knockout?
The benefits of Instant Knockout include fat loss and increased energy levels.
Instant Knockout is a weight loss supplement that utilizes ingredients like green tea and black pepper extract to aid in weight loss and achieve the desired weight loss journey while avoiding any unwanted weight gain.
Based on 1st hand experience, the benefits of Instant Knockout are its effectiveness in weight loss without unnecessary side effects, provided by all-natural ingredients.
1. Fat Loss
Instant Knockout fat burner contains ingredients that help with fat burning and losing weight and control the process that stores body fat in the first place.
After three months of using Instant Knockout fat burning supplement, it's one of the products I recommend to my clients trying to cut. It helped me reach my goal days early during my two cutting phases.
2. Increased Energy Levels
When your body burns more fats, more energy is released to fuel different parts of your body.
But I found in many different Instant Knockout reviews that people also noticed a good increase in mental energy levels and focus.
I noticed higher energy levels throughout the day just within the first week of using Instant Knockout and better focus and mental alertness at work. It's a surprising benefit since it helps dispel mental fog that happens when your body undergoes rigorous training routines.
- Strong dosage of caffeine from green tea extract for mental performance and thermogenic effects for weight loss
- A nice dose of glucomannan to help as an appetite suppressant
- Includes cayenne pepper, which works as a fat burner
- You’ll need a reminder to take 4 pills per day
Is Instant Knockout Safe?
Based on my personal experience, Instant Knockout is safe. It is a supplement made with all natural ingredients.
However, Instant Knockout contains numerous stimulants, you should not combine it with products that contain caffeine or stimulants, such as tea or coffee, as this could result in an excessive caffeine intake.
Are There Any Side Effects?
There are minor side effects because the Instant Knockout fat-burning supplement is made of natural ingredients. The 300 mg of caffeine may cause jitteriness if you are caffeine-sensitive.
That’s roughly the same amount you get in 2 large coffees, which is common with fat-burning supplements and weight loss supplements.
So if you’re planning your daily intake of Instant Knockout, you may want to skip a few trips to Starbucks to lose weight.
Weight Loss Ingredients And Their Effects
Let's look at how effective the ingredients in Instant Knockout are at stimulating energy levels, fat oxidation, weight loss, and appetite suppression.
1 - Caffeine Anhydrous
According to my dietitian, caffeine anhydrous is one closely studied thermogenic ingredient.
While some athletes have trouble with caffeine anhydrous as a stimulant, you should note that there is extensive scientific evidence  backing up the claim that it encourages your metabolic rate to burn fat and lose weight.
I was hesitant to take this product at first because of the caffeine level, but I lost around 1 to 2 lbs just within my first week of taking Instant Knockout.
2 - Green Tea Extract
Instant Knockout only contains a small amount of caffeine from its green tea extract, but I found a very interesting study that highlighted a direct link to body fat oxidation to lose weight .
3 - Cayenne Pepper Seeds
Cayenne pepper is a well-known thermogenic, but what I found more interesting was the company’s claim that it “boosts insulin sensitivity helping improve the way you store carbs.”
You can lose weight in many ways with cayenne pepper, as it boosts fat oxidation, which helps your body burn fat more efficiently .
Also, having better insulin sensitivity is easier and faster fat loss, which may have helped during my two cutting phases.
4 - L-Theanine
This amino acid is a common ingredient in many fat burning dietary supplements like Instant Knockout. It is scientifically proven to improve memory and focus for longer and enhance sleep quality in healthy adults .
Since some fat burning supplements contain stimulants like caffeine which can cause jitters, taking it with L-theanine promotes relaxation to eliminate energy crashes.
Combining caffeine and L-theanine may also improve focus during highly demanding tasks .
This may explain why I didn’t experience any energy crashes during and after workouts. I also noticed that I sleep better than usual and I feel more rested to push through a tough workout the following day.
5 - Glucomannan
The glucomannan in Instant Knockout helps suppress appetite by delivering a good amount of dietary fiber to make you feel fuller for longer .
True enough, I had better appetite control, which helped me cut out snacking in between, especially at night.
6 - Piperine
This ingredient is included in many fat burning products like Instant Knockout, and my dietitian goes as far as saying it is required to make absorption rates higher for both macro and micronutrients.
According to some studies, piperine has potential fat-reducing and lipid-lowering effects without any change in appetite, at a small dose of 40 mg/kg .
Piperine (from black pepper) can enhance the absorption or bioavailability of certain compounds, such as curcumin from turmeric. -ConsumerLab.com
7 - Vitamin B6
Vitamin B6 has been added to Instant Knockout due to a claimed link to the way cells repair and reproduce, which is an important factor in muscle building .
8 - Vitamin B12
Most people will link this vitamin to influencing your red blood cell count, but vitamin B12 also helps with fat oxidation and metabolism .
9 - Vitamin D3
Known as the sunshine vitamin, vitamin D3 helps strengthen bones and muscles, improve cognitive function, and enhance heart health.
A recent study looked at how higher vitamin D levels are linked to better cardiorespiratory fitness, which may help you exercise harder and longer .
When Should You Take Instant Knockout?
You should take Instant Knockout a few times throughout the day, splitting your intake into 4 pills. It will provide maximum nutrition value.
Personally I make it a habit to take one Instant Knockout capsule every meal, including my afternoon snack, because taking it with food may help increase absorption.
Because of the caffeine from green tea extract, you might want to avoid taking Instant Knockout too late in the day.
Instant Knockout’s Servings: 4x a Day vs 1x a Day
Instant Knockout is meant to be taken four times daily. This dosage is great for fat loss, as the multiple servings a day supply your body with a constant stream of nutrients that it can use to burn more fat.
This is a better way to take fat burning supplements than one serving a day because the effects tend to last longer, unlike one serving a day, where you only enjoy the benefits for a few hours.
Is it Suitable For Females?
Instant Knockout is suitable for females because it is not specifically a muscle-building product. For females, weight loss is often a higher priority than muscle gain.
One thing I would caution, though, is that the amount of caffeine in Instant Knockout is quite high when the full volume is taken each day. You may want to start with just 2 or 3 capsules a day.
Related Article: Best Fat Burners For Women
Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks.
What Are People Saying About Instant Knockout?
To see what real-life users have to say about this product, we checked some Instant Knockout reviews posted on the official website:
“The results seen from Instant Knockout, while mixed with proper diet and training, are amazing. I’ve tried a few others, and none seemed to work as well as Instant Knockout.” - Nick, USA
“I used Instant Knockout for 8 weeks in order to try and shred the last bits of fat before the summer holidays. Within the first week, I noticed that I had much greater energy levels, and I was now reaching PBs in the gym. The appetite suppressing effects of Instant Knockout were able to stop me from snacking on chocolate bars and crisps in between meals.” - Joe, UK
“Before I started taking this product, I was 135 pounds. I took this product for only 2 months, and with a bit of dedication, I lost 15 pounds. I am so happy with the results, and I have more energy and feel better then ever.” - Karol-Ann, Canada
Where Is The Best Place To Buy Instant Knockout?
The best place to buy Instant Knockout is on the official website.
It is the only place where Instant Knockout is officially available, and with so many counterfeit products on the market, there are too many health risks you could expose yourself to. Worse, you might get the real product, only to find out that it already expired a year ago.
It is also the only way you can take advantage of the money-back guarantee and some reasonable bulk-order prices for Instant Knockout. It ensures you're constantly taking Instant Knockout and maximizing its health benefits.
Instant Knockout Cost
Each Instant Knockout bottle has 120 capsules which would last for a month with a recommended daily dosage of 4 capsules.
You can either buy one-time at $59 or subscribe to get 10% off (you can pause or cancel anytime).
But you can also choose from the Instant Knockout packages below to take advantage of bigger discounts:
- 2 bottles ($118)
- 4 bottles ($185)
Shipping and Returns
Instant Knockout can be shipped to the US, Canada, Australia, UK, and most countries. But due to some restrictions, they do not ship to certain countries. You may check the complete list here.
If you buy 2 or more fat burning supplement bottles, they offer free shipping to US and UK customers.
But for Instant Knockout customers outside the US and UK, you can also get free shipping when you buy the 4-bottle package.
Is Instant Knockout Safe for Everyone to Use?
Instant Knockout is safe for most people. It uses top-quality, 100% natural ingredients to support weight loss and is made to the highest possible standards in the USA.
Moreover, the product doesn't hide behind sketchy proprietary blends, so it's also an excellent option for people with dietary restrictions.
Some people might be wary of its caffeine content, but it’s not too much to make you feel restless. Just don’t take it close to bedtime.
Other Fat Burner Alternatives
- Helps suppress the appetite
- Blocks the process of new body fat storage
- Boosts thermogenesis for effective fat-burning
- Improves energy levels
- Enhances mental clarity, focus, and physical stamina
- A bit expensive compared to other fat burners
- Only available on the company website
- Reduces unhealthy food cravings
- Speeds up fat metabolism
- Enhances energy levels and endurance during workouts
- Improves natural digestion
- Helps keep blood glucose at the desired range
- Need to take six capsules every day
- Costs a bit more than other fat burners
- Speeds up metabolism day and night
- Increases energy levels
- Promotes restful sleep
- Works as an appetite suppressant
- Improves mental focus and alertness
- Need to remember to take one capsule in the day and two capsules at night
- More expensive than other fat burners
Should You Take Instant Knockout With Food?
Yes, you should take Instant Knockout with food. This is generally a good approach for all supplements like a fat burner to reduce the chance of an upset stomach and make the product more effective.
Is Instant Knockout Supplement a Thermogenic?
Yes, Instant Knockout supplement is thermogenic. It contains green tea extract, cayenne pepper, and green coffee bean extract, known for their thermogenic effects that may help you lose weight.
Can I Stack Instant Knockout With Other Supplements?
Yes, you can stack Instant Knockout as a fat burner with other supplements. However, because the recommended serving of Instant Knockout has about 300 mg of caffeine from the green tea extract, you have to be mindful of the caffeine content of the products you plan to stack it with.
How Long Does It Take For Instant Knockout To Work?
It takes 30 to 60 days to assess whether or not Instant Knockout works for you. It varies as some users lose weight in just a few weeks while others take a month or longer.
Is Instant Knockout FDA-Approved?
Instant Knockout is not FDA-approved. However, it is regulated by the FDA.
How Much Caffeine Is in Instant Knockout?
There is 75mg of caffeine per capsule in Instant Knockout. It sums up to 300mg of caffeine per daily serving.
Is Instant Knockout Worth The Investment?
Yes, I can confirm from my first-hand experience that Instant Knockout definitely is worth the investment. After 3 months of trying the product out for this Instant Knockout review, analyzing the content with a nutrition expert, and reading through hundreds of reviews, I have to say that this fat burner is my personal favorite and the one I recommend to my clients.
If you're looking to achieve your weight loss goals and improve your body composition, Instant Knockout can be a valuable addition to your routine, thanks to its potent blend of ingredients, including Vitamin B6, that promote fat metabolism and aid in losing unwanted fat, leading to significant fat loss and impressive Instant Knockout results.
The weight loss effect is noticeable, and I have tried it during 2 cutting phases, where each time I reached my goals a few days early.
Once you have tried it out for a few weeks, make sure you get in touch with us on social media or use the contact page on this site.
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