January 2

Instant Knockout Review 2024 | Legit Fat Burner Or Scam?


As the world becomes increasingly health-conscious, weight loss supplements have become a staple in many people's daily routines. One such supplement is Instant Knockout, promising to help you lose weight by boosting your fat metabolism and suppressing hunger. 

Let's evaluate whether this fat burner is the right one for you by examining its ingredients, effectiveness, safety, and price.

Instant Knockout

Overall Rating: 4.6/5

  • Reduces appetite and cravings for easier cutting
  • Carves a shredded physique.
  • Boosts metabolism and energy levels.

What is Instant Knockout?

Manufactured by Roar Ambition, Instant Knockout fat burner is a weight loss supplement. But — unlike most of its competitors — Instant Knockout doesn’t just accelerate the natural fat-burning processes of your body. 

Instead, this supplement also maintains muscle, reduces hunger, and boosts your energy levels. This helps you achieve your body shape goals by making the cutting phase easier without compromising your workout performance. 

My Video Review of Instant Knockout

Let’s take a closer look at how it works.

How does it work, and is it effective?

Instant Knockout takes a three-step approach to realize its promises. These steps include:

Boosting metabolism

It regulates and increases the natural metabolic rate of your body. This allows you to shed fat at a much higher rate, without making any changes to your workout routine or diet.

Suppressing hunger

The high Glucomannan content of this supplement fills up your stomach with dietary fibers and makes you feel full with less food. This prevents future fat accumulation and makes the cutting phase of your fitness plan significantly easier. Glucomannan is a very effective appetite suppressant.

Increasing energy levels

It boosts your energy output so you can increase the intensity and duration of your workout sessions. The L-Theanine in its formula also lowers post-workout fatigue — allowing you to work out more often. Instant Knockout is very effective at raising energy levels.


Instant Knockout doesn’t provide a clear list of its proposed benefits. But, after reading through its website, here’s what it offers:

Easy cutting

Cutting phase in a fitness plan involves staying on a calorie deficit without slowing down the workout routine. Instant Knockout makes this process easier by suppressing your hunger with Glucomannan and boosting energy with its Caffeine and Capsaicin content.

Faster weight loss

Instant Knockout utilizes Caffeine, Green tea, and B Vitamins to accelerate your metabolism which, in turn, speeds up fat oxidation.

Improved performance

Stuck on the frustrating workout plateau? Instant Knockout helps you get past the challenge by boosting mental and physical performance with L-Theanine and Caffeine.

Who should take Instant Knockout

Instant Knockout is for anyone who wants to accelerate the progress toward their fitness and weight loss goals. It also promises to be just as effective for women as it is for men. Plus, it doesn’t have an upper age limit either — making it viable for everyone, from young adults to folks past their 50s.

Pros and Cons


  • Manufactured in FDA and cGMP-approved facilities;
  • Helps you lower your calorie intake;
  • Improves cardio and weight training performance;
  • Works well for both men and women;
  • Ingredients are safe and all-natural.


  • High Caffeine content might cause issues for some people;
  • Slightly mixed customer reviews on third-party marketplaces.

Customer Reviews

Customer reviews for Instant Knockout are fairly positive with users praising how these supplements helped them lose weight in a short amount of time. You can read these testimonials in more detail by clicking here, and you can see below some before and after images provided by verified customers.

Instant Knockout also lists two detailed reviews from two pro athletes, Diego Sanchez, and Greg Jackson. Click here to see what they had to say about this fat burner.


Instant Knockout fat burner lists nine active ingredients on its website to back its claims and promises. These include:

Glucomannan — 1800 mg

Glucomannan is a dietary fiber that acts as a powerful hunger suppressant. Once ingested, it absorbs water and takes up a lot of space in your stomach. This makes you feel fuller than you actually are and satisfies your hunger with noticeably less food.

Studies also show that Glucomannan can lower the amount of fat absorbed during digestion — preventing weight gain.

Green tea extract — 500 mg

Green tea helps you lose weight by boosting your daily energy expenditure. This prompts your body to compensate by converting more fat into energy. The impact of this fat-to-energy conversion is most visible around the abdomen and waist.  

Caffeine Anhydrous — 300 mg

Caffeine kicks your fat metabolism into high gear by boosting thermogenesis. This allows you to lose excess weight faster without having to change your workout routine or diet. Speaking of workouts, Caffeine intake also improves your gym performance by increasing your muscle strength and energy levels.

L-Theanine — 100 mg

Studies show that L-Theanine improves your cognitive performance and ability to focus. Most of its users also report higher alertness and less fatigue during workouts. A 2016 study by Everett et al. also demonstrates the positive impact of L-Theanine on stress and anxiety. 

While this doesn’t provide any direct weight loss benefits, it can help you stay motivated throughout your weight loss journey.

Cayenne pepper — 100 mg

Cayenne pepper aids your weight loss efforts in more than one way. For starters, it boosts fat oxidation — allowing your body to burn excess fat at a much higher rate. The Capsaicin in Cayenne also suppresses hunger and eliminates cravings for late-night snacks.

Black pepper extract — 10 mg

Black pepper contains a Piperine which increases the bioavailability of other ingredients in Instant Knockout by 30-200%. This makes the supplement more effective as a whole .

Vitamin B6 — 5 mg

Vitamin B6 and its derivatives are essential components of enzymes responsible for protein metabolism. So, taking B6 supplements can help maintain a healthy metabolism.

Studies also show a direct correlation between Vitamin B6 intake and higher dopamine levels which can help you stay motivated.

Vitamin D3 — 45 mcg

According to a 2012 study by Salehpour et al., regular Vitamin D3 intake can lead to a lower body mass index after just 12 weeks. Reports also suggest a link between D3 supplements and improved cardiovascular health with lower blood pressure.

Vitamin B12 — 10 mcg

If paired with a proper nutritious diet, Vitamin B12 supplements can boost your energy levels — allowing you to increase the duration and frequency of your workout sessions.

Potential Side Effects

Instant knockout doesn’t report any side effects from their fat-burning supplements and claims to be 100% safe for everyone. Even if this is completely true, we still recommend practicing caution when taking these supplements.

Although rare, its ingredients — like Cayenne pepper or Green tea — can still cause allergies for some users. Plus, the high Caffeine content of Instant Knockout can cause dizziness, headaches, and muscle tremors if you have low Caffeine tolerance.

Another factor to keep in mind is your medical condition and history. For instance, you should consult your doctor before considering these supplements if you are already taking medication for a major illness. The same goes for women that are pregnant or nursing.

Prices & Offers

Each bottle of Instant Knockout contains 120 capsules and is meant to last one month. You can purchase this fat burner directly from Instant Knockout’s official website.

You get free UK and US shipping with the two-month package and free worldwide shipping with the four-month bundle. Both of these options also come with a free Boss Shred which includes easy-to-follow video programs and nutrition E-books.

You also have the option to subscribe for recurring Instant Knockout deliveries to get the above-mentioned benefits + a flat 10% discount on every purchase. 

Final Thoughts

From what we’ve seen, Instant Knockout appears to be a solid consideration for most. It promises to help you lose excess weight faster and backs its claims with nine, scientifically-proven ingredients. 

This supplement also takes a very realistic approach to weight loss. It suppresses your hunger to prevent fat accumulation while also increasing your energy and motivation to promote consistency.

Want To Try Instant Knockout?

Overall Rating: 
4.6/5 stars




Frequently Asked Questions

How do you take Instant Knockout?

Instant Knockout requires you to take a capsule four times a day. The recommended time for each dose is 8 am, 11 am, 2 pm, and 5 pm. That said, you can choose the exact time for each capsule according to your schedule. Just make sure to have a three-hour gap between each dose.

Can I take other supplements alongside Instant Knockout Cut?

According to its official website, you can take Instant Knockout Cut with other supplements. The only exceptions to this are supplements that contain stimulants like Caffeine.

Is Instant Knockout Vegan friendly?

Yes, Instant Knockout claims to have a fully vegan formula. Its capsule is also made from Vegetable-based cellulose material.

What is Instant Knockout Complete?

Instant Knockout Complete is a meal replacement that contains the right amount of Proteins, Nutrients, and Vitamins. Its low-calorie count allows you to lose fat faster without compromising your muscle mass.

Can anyone purchase Instant Knockout?

Instant Knockout supplements — and most other fat burners — are formulated for adults. So, you must be over the age of 18 to purchase this supplement.


You may also like

Does Damiana Aid in Weight Loss?

Does Damiana Aid in Weight Loss?
{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}

Get in touch

0 of 350