Alpha Fat Burners

Blackstone Labs Cobra 6P Extreme Review

A product by Blackstone Labs

Overall Rating:


Positives Negatives
  • Contains Caffeine
  • Some ineffective ingredients
  • Potential Side Effects
  • Proprietary Blend

Review Overview – What does Blackstone Labs Cobra 6P Extreme do?

Made by Blackstone Labs – this is fat burner that has been claimed to promote:

  • Fat Loss
  • Energy
  • Metabolism

But how well does it really work?

In this review, we look closer at Cobra 6P Extreme to see how effective it really is.

This is what you need to know:

How are the servings?


With only 1 serving a day, this isn’t your best option when it comes to fat loss.

The effects of this fat burner will only last for a few hours at a time – no matter how strong it is.

For the results you need the nutrient supply to your body constant.

This allows your body to stay constantly in that fat burning mode and allow you to keep burning calories.

Black Stone Labs could have a more effective product here if they decide to up the servings.

What about the ingredients in Cobra 6P Extreme?

Not that great.

To begin with, this is all one proprietary blend. This means all the individuals ingredients in this product have been hidden under one larger value.

This means you don’t know how much of each ingredient you’re getting, or whether it has been effectively dosed.

Secondly, there’s an issue here with side effects. Some of the ingredients used, cause negative effects in users.

There’s other problems too.

Here’s what you need to know about the main ingredients:

Caffeine Anhydrous

One of the best natural stimulants out there.

Caffeine is used in so many drinks and energy supplements for one reason – it works.

Having been seen to improve both energy levels and metabolism. Caffeine is great for keeping you going in the gym, and cutting extra calories.

Achyranthes Aspera

A poorer choice.

Achyranthes Aspera isn’t the best nutrient for fat loss – in fact there are no studies that tie it to actually causing fat loss.

The only benefit that this nutrient seems to have is to work as anti-inflammatory – and these are only claims.

There are no studies to support this.


Not the best fat burner out there.

The idea behind Higenamine is the belief that may work like the banned fat burner Ephedrine – due to it having similar mechanisms to that nutrient.

However studies have shown that there is little evidence for it working this way – and is not actually that effective.


Another poorer choice.

Found typically in dark chocolate and cocoa – Theobromine is a nutrient that is used in a wide range of supplements.

Although widely used, Theobromine doesn’t promote fat loss – it’s main function is to promote blood flow.

This could mildly help nutrient absorption but not much else.


Another anti-inflammatory.

Again this won’t promote fat loss – but may mildly help with bloating.

Advantra Z (Synephrine)

One of the worst fat burning nutrients on the market.

Synephrine is believed to work as a fat burner and an energy booster – and is promoted as such in supplements.

However, studies have shown that it has little to no effect when used in human trials.

Not only that users have reported several side effects when using the nutrient.

It’s not your best option.


Essentially just black pepper.

This doesn’t help with fat loss, but may help to some degree with nutrient absorption.

Ingredients Bottom Line:

On the whole, this isn’t the best nutrient profile we’ve seen in a fat burner.

The first problem with Cobra 6P is that all the ingredients are part of a proprietary blend.

You don’t know how much of each ingredient you’re getting, or how effective it will be overall.

The second problem is that it contains Synephrine, which is well known for causing side effects.

Not only that, numerous ingredients in this product are ineffective when it comes to fat loss.

Side Effects

Your main concern here is the Synephrine.

Despite failing in numerous studies to promote fat loss or energy it’s still being used – and it causes numerous side effects.

Studies have shown that using Synephrine can lead to:

  • Headaches
  • Nausea
  • Light Headedness
  • Raised Blood Pressure
  • And more

It’s definitely not your best option when you’re aiming to burn fat.

Is there anything better than this fat burner?


We’ve scoured the market for the best fat burners that promote:

  1. Thermogenic Calorie Burning
  2. Energy Levels
  3. Fat Loss
  4. Appetite Suppression

And we’ve narrowed it down to just three.

To see what works best for men, and what works best for women, check out the top 3 rated fat burners on the market in the links below:

Best Fat Burners for Men
Best Fat Burners for Women

Blackstone Labs Cobra 6P Extreme Review Conclusion

As you can see, this isn’t your best option.

From this review, here’s what you need to know about Cobra 6P Extreme;

  • Poor Servings – With only 1 serving a day, your body isn’t getting a regular enough supply of nutrients to constantly burn fat.
  • Proprietary Blend – You don’t know how much of each ingredient you’re getting or how effective it will be overall.
  • Potential Side Effects – Synephrine has been linked to causing numerous side effects in users.

Needless to say, it’s not your best option.

To see what our readers, and editor recommend as the most effective fat burner – check out our full official review of our current #1 in the link below:

What I'm using at the moment - Instant Knockout

I tried Instant Knockout for 3 months and went from skinny-fat to absolutely SHREDDED.

You can see my results and why this is our #1 Fat Burner here.

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