Instant Knockout Fat Burner

(4 customer reviews)


A market-leading fat burner, Instant Knockout first became available in 2014.

Parent company, Roar Ambition, designed Instant Knockout to “get to work on stubborn fat”, to replace energy lost on a low-calorie diet and to help users keep their appetites under control.

The website states Instant Knockout contains “high-quality, all-natural ingredients” to “slay your fat demons” and to make sure “your fat-loss journey will be safer”.

According to, the fat burner uses the likes of cayenne pepper and green tea extract to raise the user’s metabolism and “attack your fat from different angles”. It also contains glucomannan to reduce the user’s appetite by helping them stay “fuller for longer”.


4 reviews for Instant Knockout Fat Burner

  1. Tommy Mac

    Incredible fat burner, really impressed

    I don’t really know where to start. This product completely changed the game when it comes to my weight loss journey. I started a year ago after trying many similar products, which seemed to promise the earth and deliver nothing. I was slightly overweight but not in a dangerous level. I wanted to try a fat burner to really blast off that final bit of belly fat that just won’t go away (if you’re over 35 you’ll understand what I mean). I hit the gym 3-4 times a week but it just would not go. Since taking Instant Knockout a year ago I’ve recovered a flat stomach, something I’ve not had for over 10 years. Don’t get me wrong, it also took a lot of sit ups, but I doubt i would have got this far without this supplement. The ingredients range is great and it’s easy to take throughout the day. Give it a try, you won’t regret it!

  2. FatDan

    Very good, with a few issues
    First, let me say the ingredients profile of this supplement is great. It has ingredients like cayenne pepper and green tea which help you burn fat quicker, but it also has glucomannan which sits in your stomach to stop you from overeating. I’m sure anyone who buys this is going to consume less calories, but whether that’s worth the price or not is up to you. The packaging is also amazing, really looks the part in your gym bag. The only negatives I can think of are that it does become a bit of a chore to remember to take them all the time. It’s a bit like taking your medicine. You’ll get into the habit but I didn’t like popping pills all day long. It seems to be really well researched and it’s always worth a try to see if it will work for you.

  3. Pants Down

    4 stars, overall great

    This is a fantastic fat burner! I take the dose in the morning as soon as I get up and I can feel them working almost right away. I don’t feel the need to have a huge breakfast, and I manage to get through to lunch without having any huge cravings. I take the rest of the dose through the day and i’ve noticed my calorie intake has gone down a lot. I’ve not noticed any major side effects. i’d only mark it down 1 star because they’re costly, but you really do get what you pay for. You can get a deal with them occasionally as there’s a 1 bottle free promotion. At least that’s what I did. I’d recommend if you can afford it, it helps your willpower to eat less food and makes you less hungrier.

  4. Saint Nic

    5 star fat burner

    Nobody really likes to talk about their weight, but I thought i would share my story here. I’ve been overweight my whole life and bar going on an extreme diet, i can never seem to shift anything. I thought I’d try instant knockout as a friend recommended it to me. I’ve been running, and cycling for the last few months and have increased my overall exercise levels which will also have a big impact. But I’ve done this before and not really noticed any drop off. I’m 5″9 and was 178lbs which is not a healthy weight. I’ve managed to lose 11lbs over the last few months which is not massive, but is more than I’ve managed to shift without a supplement. Overall I love this product and it goes everywhere I go nowadays.

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