Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner [Which Is Best?]

Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner

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Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner

A battle of two big names in our Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner comparison.

These two have built up good reputations but which has gone for better fat burning ingredients and dosages?

These are the main attributes of a good product but also, we want to see natural ingredients and for the supplement to be completely safe to use.

In order to really impress, both products need to do the following:

  • Burn fat effectively
  • Be safe
  • Suppress appetite
  • Increase energy

Anything less than this and neither will be recommended. Still, we know of their reputations and have high hopes here.

Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner: Who Makes These Products?

Roar AmbitionInstant Knockout Review

Here we have the team behind Instant Knockout.

Based in the UK they have built up a great following with loads of people taking to the net to post their before and after profiles. This is often the sign of a product that works.

They review and amend the ingredients regularly. This ensures the customer is getting the best possible version at all times.

With a generous money back guarantee, you start to get a sense of why they are such a trusted brand.

In terms of endorsements, theirs are impressive. None other than former Mr. Universe puts his name to their T booster Testofuel.

For Instant Knockout, UFC fighter Diego Sanchez put his name to the product. He uses it to make weight before a bout.

CellucorCellucor SuperHD Thermogenic Fat Burner

Now we turn our attention to the second product.

Their motto is Better Is Never Enough, it might be catchy but is this product better…or enough?

We do like that they have a 30-day money back guarantee making both products today risk free.

They have some endorsements as well but you may not have heard of their Crossfit athletes and personal trainers. Still, it’s good to see them invest in people in the industry.

They have a range of products that include post-workout and pre-workout supplements as well as their own range of apparel.

Cellucor says they have made it their mission to support personal journeys or improvement for 15 years so they clearly have some experience in the industry.

Time to see which is the better option today.

Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner Ingredients

This is where we can really get to know these two a little better. First of all, we should say that Cellucor uses two proprietary blends for a lot of their ingredients. This means we don’t get to see all the dosages and can’t tell if they are all effective.

Their suggested serving isn’t ideal either. They say to take it twice a day which does mean the benefits can wear off. They say you can take a third capsule but to take it with the first one of the day.

Instant Knockout advises taking one capsule 3-4 times a day which really spreads out the fat burning benefits.

Mutual Ingredients

Vitamin B6

A good start from both as this is a useful ingredient.

B6 works in a similar way to other B-vitamins in that it plays a role in how our bodies create energy from food. It converts it into glucose to be used as energy.

There are even reports showing it can boost metabolism.

With 6 mg in Cellucor SuperHD Thermogenic Fat Burner and 5 mg in Instant Knockout, we are getting similar amounts that will be effective.

Vitamin B12

B12 stops us from storing as much fat.

It isn’t something we can create ourselves so supplementing it is a useful way of getting the benefits. It can help to fight fatigue as it promotes red cell production.

Vegans and vegetarians will benefit most from supplementation of B12 as most notable sources include meat, dairy, and fish.

Green Tea Extract

Up there with some of the best fat burning ingredients.

This is because it actually works.

It is a proven thermogenic. This means it heats the body up on the inside, causing it to burn fat to cool itself down again.

The catechins in Green Tea are the most beneficial. These are what help to fight disease and act as antioxidants. even says that they are anti-obesity as well as anti-diabetic.

Green Tea has also been found to enhance endurance levels which will be great for the gym.

WebMD tells us that Green Tea is a milder stimulant than the likes of Caffeine Anhydrous and it contains 2-4% Caffeine. Even though it is milder when compared to Caffeine, it will provide a boost to your thinking and alertness.

The 500 mg in Instant Knockout is a big and optimal amount. How much is in Cellucor SuperHD Thermogenic Fat Burner?

We’re not sure because it is in a blend with two other ingredients when all 3 are combined it only adds to 500 mg.

Cayenne Pepper

Again, a really effective ingredient.

It works as a thermogenic, meaning your body will be burning fat even whilst you rest. On top of this, it is also an appetite suppressant.

WebMD confirms this by saying it has been found to curve appetite, especially in those who do not already eat spicy foods.

A great ingredient but the proprietary blend stops us from seeing if Cellucor SuperHD Thermogenic Fat Burner is giving us enough.

The 100 mg in Instant Knockout is a great dosage.

Caffeine Anhydrous

Another very effective inclusion.

The added boost of energy that comes from caffeine will be very welcome. If you are using a fat burner alongside a diet that restricts calories, this is, even more the case. The anhydrous side refers to the fact that this is a powdered form of Caffeine. This makes it easy to absorb.

It will increase focus and get your metabolism going.

At 320 mg from the 2 capsule serving in Cellucor, it is a good amount. We would avoid going for their third capsule advice.

The 350 mg split across 4 servings in Instant Knockout is a very good amount.

Individual Ingredients

Instant Knockout


A great all-rounder.

We say this because it has real benefits for T levels but in terms of fat burners, it stops us from storing as much fat. Zinc has also been found to enhance glucose metabolism. even says that Zinc has also been shown to improve mood.

The 10 mg included is an optimal dosage.


Chromium has been shown to help regulate blood glucose levels.

WebMD tells us that it can decrease LDL (bad cholesterol) levels in people who have lower blood fat levels.

It can also communicate with the brain, telling it that the body is full thus working as an appetite suppressant.

With 10 mg being the dosage here, Instant Knockout is giving you another great amount.

Green Coffee Extract

You see this more and more in fat burners and for good reason.

This is coffee without the color being roasted yet. This is also the version that is full of chlorogenic acid. This stops us from storing fat as well as reduces blood sugar.

WebMD talks of a study that looked into adults with obesity. This showed that taking Green Coffee Extract for between 8 to 12 weeks meant more weight loss for those when compared to others taking a placebo.

The 100 mg in Instant Knockout is another good amount.


This product is full of great ingredients, here is another appetite suppressant.

It is a dietary fiber that swells in the stomach, making the user feel full. Therefore you are less likely to snack in between meals.

Here we have another appetite suppressant and one of the better ones.

The 500 mg is a big dosage that will really work.

Black Pepper Extract

Not a direct fat burner but still a useful ingredient.

This is because it enhances the benefits of the other nutrients. This means more appetite suppressing, more thermogenic benefits, and more fat burning.

Cellucor SuperHD Thermogenic Fat Burner


Referred to as vitamin B3 it is an ingredient often linked with benefits for insulin levels.

You will find it in multivitamins because of the way it helps us to make more energy. It breakdown carbs to use them for fuel.

When you have enough in your system, your body passes the rest through urine. suggests that you need one gram for it to be effective. This makes the 20 mg serving per day here very much on the low side.

Not an effective inclusion based on this.

SlimPro Protein Hydrolysates of Blue Whiting

A potential appetite suppressant.

It is a fish protein, although largely unknown, one study showed it to be effective in improving body weight composition.

SlimPro Protein Hydrolysates of Blue Whiting is a patented formula that has been enhanced by BCAAs. Although there aren’t a lot of studies to back it, if this is to work it would make it a useful ingredient here.

The dosage isn’t included anyway!

Dandelion Root Extract

A frustrating ingredient really.

It will get you urinating more, working as a diuretic. This would help with water retention but not actually burn fat.

N-Acetyl L-Tyrosine

A more common ingredient for a nootropic.

This amino acid could help though. It works against the effects of stress which can help to keep the effects of Caffeine Anhydrous under a calming control.

You will also get enhanced focus from supplementing N-Acetyl L-Tyrosine.

However, does say that you should act with caution if you have a hyperactive thyroid. This is because this ingredient can raise thyroid production as it is a precursor for its synthesis.

The dosage isn’t included so we don’t really know if it will work.

Rhodiola Root Extract

Another ingredient that is better suited to nootropics.

It can help you to focus which is always useful but still, there are no fat burning benefits here.

According to, Rhodiola can reduce fatigue and exhaustion in prolonged stressful situations. So, although this is good, it is not what we are looking for necessarily.


Ok, this controversial ingredient does have some uses.

It can help to break down fats and is even thought to be an appetite suppressant. The problem is the side effects.

It is thought to cause elevated blood pressure and heart rate. Even WebMD advise that taking orally is possibly unsafe. They add that Yohimbine has been linked to reports of severe side effects that include heart attacks and seizures.

The fact that it is in a proprietary blend makes this even worse.


An understudied ingredient that says is a berry that might burn fat but has not really been looked into.

We need proven ingredients and there aren’t enough so far.

Toothed Clubmoss

More unproven fat burners.

There is no recommended dosage – that’s how unproven this is. So, if the long-term safety has not been investigated, we find it hard to really vouch for it.

There are some that suggest it can help with focus but we already have ingredients that give us this, even though we aren’t exactly looking for it here.

Cellucor advises that this is a natural source of Huperzine A and it is included in their sensory impact proprietary blend.

We just want some more fat burners.

Rauwolfia Root Bark Extract

Not a great ingredient to end on.

Anything that works in a similar way to Yohimbine is always going to raise a few eyebrows. tells us that there isn’t a lot known about this ingredients potency. More worrying bits of information about their ingredients.

Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner Side Effects

The easy place to start is with Instant Knockout. Their use of natural ingredients and optimal dosages means this will be an effective fat burner, with no side effects.

Then there is Cellucor SuperHD Thermogenic Fat Burner. It is made up mostly of two proprietary blends which are a concern in itself.

Then there is the inclusion of Yohimbine which has links to potential side effects such as elevated heart rate and blood pressure, heart attacks and seizures.

Even N-Acetyl L-Tyrosine needs to be dosed sensibly to avoid any thyroid related issues for anyone with a hyperactive thyroid.

Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner Pros and Cons

Instant Knockout Pros

  • Natural ingredients
  • Money back guarantee
  • Used by top athletes
  • Ships worldwide
  • Enhances metabolism
  • Suppresses hunger

Cellucor SuperHD Thermogenic Fat Burner Pros

  • Some useful fat burners

Instant Knockout Cons

  • Not available in store
  • Shouldn’t take too late in the day because of the caffeine levels

Cellucor SuperHD Thermogenic Fat Burner Cons

  • Proprietary blends
  • Yohimbine inclusion
  • Potential side effects
  • Suggested serving not ideal

Instant Knockout vs Cellucor SuperHD Thermogenic Fat Burner Conclusion

Winner: Instant Knockout

Buy Instant Knockout from:

(Clean Lean Machine tip: Get 1 box free when you buy 3 boxes!)

Only one product today really stood out in a good way.

Instant Knockouts mix of top fat burner ingredients, at optimal dosages, is among the best in the business.

It is made by a reputable company and is free from the risk of side effects. It is about as complete a fat burner as you are going to find.

For your body to burn fat, of course, you need to put in some sweat to get results. To make it easier on yourself, we recommend using this brilliant and effective fat burner.

Buy Instant Knockout from:


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