Instant Knockout vs Vintage Burn Reviews [Fat Burner Comparison]


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Instant Knockout vs Vintage Burn Reviews

The old vs the new in terms of style but which will have the substance to back it up in our Instant Knockout vs Vintage Burn review?

It takes more than an impressive label to impress us, a fat burner needs to have the ingredients and dosages to back it’s marketing up.

In terms of marketing, Vintage Burn has been making waves for some time, and Instant Knockout has a great reputation for delivering quality products and customer service.

But what are we looking for from a fat burner? In order to impress, it needs to do the following:

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

Anything less than this won’t suffice, so let’s see what they’re made of.

Instant Knockout vs Vintage Burn: Who Makes These Fat Burners?

Roar Ambition

The people behind Instant Knockout are UK based Roar Ambition.

They have a great reputation for delivering quality, but also for what they do for their customers. Not only do they have a generous 90-day money back guarantee (this is almost unheard of in terms of time!) but they review and amend their ingredients and dosages regularly.

This means the customer is always getting the best possible version of their supplements. They ship directly from the USA and UK, delivering worldwide.

In terms of endorsements, they have some impressive names using their products. UFC fighter Diego Sanchez uses Instant Knockout to make weight before a bout. They also make a T booster called TestoFuel and none other than former Mr. Universe Robby Robinson uses it.

Old School Labs vintage-burn

The name of the company fits the product range for this California based company that makes Vintage Burn.

The label says it has no artificial substances which we like and it is gluten-free. It appears they take care of the small things, never a bad thing.

There is a 100% money back guarantee which is also great, this might be why their products sell so well on Amazon. The fact that they keep it uncomplicated is good.

With military and student discounts they seem to try to be covering a lot of bases. Their endorsements are fittingly vintage, with some of their names coming from the golden era of bodybuilding.

Instant Knockout vs Vintage Burn Ingredients

This is where we will really get to separate these two fat burners.

The first signs are good, no proprietary blends so we get to have a proper look at the dosages of all the ingredients.

The serving schedule of Instant Knockout deserves a mention. Taking it 3-4 times a day means you can spread out the benefits and burn fat all day long. The same can’t be said for Vintage Burn as they suggest taking 2 capsules twice a day.

Mutual Ingredients

Green Tea Extract

A great start from both here as this is one of the best fat burner ingredients.

It has a couple of uses including the fact that it is a proven thermogenic. This means it heats the body up on the inside, causing it to burn fat to cool itself down. It is also known to increase the benefits of exercise in terms of burning fat.

The 660 mg in Vintage Burn is a very good amount, as is the 500 mg in Instant Knockout.

Green Coffee Bean

Another good ingredient, it’s a good start from both supplements here.

Green Coffee is just coffee before the color has been roasted out of it. Breaking down glucose in the liver, it ensures you burn fat for energy instead of relying on food for fuel. A useful trait for any fat burner.

The 520 mg in Vintage Burn is a good amount, the 100 mg in Instant Knockout is representative of their attention to other ingredients.

Caffeine Anhydrous

This is caffeine with the water taken out of it, making it more potent and easily absorbed in the body.

Because it acts so fast it is popular in energy drinks and the increase of energy here will be very welcome. This is especially the case if you are using a fat burner whilst consuming fewer calories than usual or hitting the gym.

It is also a great metabolism booster, this really helps to get fat moving where you want it – out of your system.

Vintage Burn has included 300 mg, a good amount, the 350 mg in Instant Knockout edges it.

Individual Ingredients

Instant Knockout

Cayenne Pepper

This is the sort of ingredient we really want to see.

It is another thermogenic which you can never really have too many of in a fat burner. On top of this, it works as an appetite suppressant. It swells in the stomach which makes you feel full and less likely to reach for a snack in between meals.

If you are not a fan of the spice then a supplement such as this is a great way of getting the benefits. The 100 mg is a good amount of this top ingredient.


Another great inclusion, it works in a similar way to Cayenne Pepper.

This dietary fiber swells in the stomach, making you feel full and absorbs water. Again, it is clear they don’t want you to put more fat into your body once you have worked so hard to get rid of it.

The 500 mg included in Instant Knockout shows their understanding of what should go into a fat burner.

Vitamin B6

A good ingredient once again, this time because it helps to encourage your body to burn fat for fuel.

It helps to turn stored carbs into glucose which will maintain normal levels of blood sugar. This is particularly beneficial when your calorie intake is lower than usual.

At 5 mg, this is everything you need.

Vintage Burn

Raspberry Ketones

Well, it started well with the mutual ingredients, but unlike Instant Knockout, it hasn’t carried this on.

This ingredient was once heralded as the next big thing in the fat loss industry. This was based on some early studies which have since been largely discredited. Still, companies include this in their formula and we’re not sure why.

A disappointing ingredient and at 400 mg, it is taking up a lot of valuable space.


It is more likely to be found in T boosting supplements and has almost no backing in terms of fat loss. Another strange one from Vintage Burn.

Forskohlii Root Extract

It has turned it around a little towards the end here as this is an ingredient that can help you from producing as many at cells.

It is also thought to be a good appetite suppressant which makes it a good inclusion in a fat burner. A better end to things for Vintage Burn.

Instant Knockout vs Vintage Burn Side Effects

The good thing about both of these fat burners is that they use ingredients that are safe for consumption.

There doesn’t appear to be anything here that you wouldn’t want to put in your system but as always, check the label in case of allergies.

Instant Knockout vs Vintage Burn Pros and Cons

Instant Knockout Pros

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

Vintage Burn Pros

  • Some good ingredients
  • No proprietary blends
  • Money back guarantee

Instant Knockout Cons

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

Vintage Burn Cons

  • Some pointless ingredients
  • Some of the best fat burners missing
  • Serving Schedule

Instant Knockout vs Vintage Burn Conclusion

Winner: Instant Knockout

Buy Instant Knockout from:

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

Whilst vintage Burn has some decent dosages of the early ingredients, the better ingredients and dosages overall belong to Instant Knockout.

It has a bunch of ingredients for each of the key traits for a fat burner. Cayenne Pepper and Glucomannan for appetite suppression, Green Tea and Cayenne Pepper for thermogenesis and more.

They have shown a great deal of knowledge of what a great fat burner looks like and haven’t cut back anywhere. Because of this, we have no problem recommending this product as the one most likely to get you absolutely shredded.

It’s not often you come across a supplement that is so complete and well rounded, don’t forget it is safe to use, the serving schedule is ideal and there are no proprietary blends in this product.

To find out more about this top fat burner, check out their official website…

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