You are here
Home > Fat Burner Reviews > CLK Non-Stimulant Fat Burner By Cellucor Review

CLK Non-Stimulant Fat Burner By Cellucor Review

This may sound like a gimmick to some, but a relief to others. It’s one of the very few fat burners on the market that contain no stimulants whatsoever. Their claims make it an interesting study case, but does this fat burner mean business, and can it rid me of my unwanted belly fat? 

Let’s have a closer look and see if this is the right fat burner for you. 

Benefits of CLK Non-Stimulant Fat Burner

  • Non-Stimulant Fat Burning 
  • Burns Fatty Acids For Energy 

The zero amount of caffeine in this product is it’s main selling point. The fact that it contains no caffeine or adrenaline boosters that might have kept some people awake at night is a bonus for many.

51d-bo6-clBut! if it doesn’t have stimulants, it must have thermogenic effects, right? Unfortunately not, it doesn’t contain any cayenne pepper, pepperoni or zinc to increase testosterone and fat burning, as we all know, the more testosterone we have, added with increased thermogenic’s, we’re onto a winner. It looks like Cellucor has missed out vital research when creating this supplement.

CLK Non-Stimulant Fat Burner By Cellucor claims to break down fatty acids and use them for energy and starve off hunger by using CLA and L-Carnitine Tartrate which helps to break up abundant fatty acids for energy. 

The “stimulant free” fat loss formula contains Slimpro Technology. Which according to Cellucor CLK helps to tone and sculpt the body to rid us of unwanted fat.

It looks like a great choice for anyone who wants to lose weight without experiencing that jittery feeling and adverse reaction that some aggressive fat burners have been known to do create. 

“BUT! its lack of safe, thermogenic and natural ingredients may have been a bad move by Cellucor, because it’s missing out on extra weight loss and fat burning powers they provide.”

Also, one major thing to point out is, it contains a propriety blend of ingredients, meaning, we will never know for sure how much ingredients we could be taking. 

You can always check out my top 3 fat burners here and compare for yourself. 



A Closer Look – What’s Inside

Slimpro® Protein Hydrolysates of Blue Whiting (Micromesistius poutassou): Slimpro® is a natural ingredient that has been known to help reduce food cravings and keep hunger at bay. 

L-Carnitine Tartrate: L-Carnitine is an important amino acid that may help to transport abundant fatty acids into the blood stream for energy.

Razberi-K®: Raspberries contain a ketone that “may” support healthy weight loss by using ketones 9fatty acids) as energy. But the scientific research to back this up is minimal. 

CLA (Conjugated Linoleic Acid): This may help break down fatty acids for energy, by my count, that’s three ingredients to supposedly help break up fat for energy, but where’s the thermogenic effect happening? 

Side Effects?

Some users report stomach upset, diarrhea and stomach pains. With fat burner supplement such as these, or diet products that contain “fad” ingredients, it’s been known to cause bothersome or concerning adverse reaction. The chances of this supplement working effectively are slim. This does mean that Cellucor CLK does cause negative side effects.

Find out which Fat Burners work the best 
Top 3 Fat Burners  –


  • No caffeine or aggressive ingredients 
  • It’s made by a recognized supplement brand
  • Only take it twice per day 


  • It’s expensive at $69.99 fro a fat burner that only has three main ingredients
  • Each bottle only contains a supply for 15 days 
  • The lack of stimulants and natural thermogenic’s means it won’t be as effective
  • Contains a propriety blend of ingredients. Not knowing how much is inside of each ingredient. 

How To Use

Cellucor advises taking one serving (3 soft gels) first thing in the morning, and another serving (3 soft gels) in the afternoon.

Where Can I Buy It?

from their website and other online retailers such as and

How Much Does It Cost?

$69.99 for a bottle containing 90 capsules

My Verdict

My honest opinion on CLK Non-Stimulant Fat Burner By Cellucor is that the three main ingredients have been shown to work in very small amounts to help break up fatty acids for energy, but it won’t get the job done as an efficient fat burner. Why? 

Well, there are some serious links missing in the jigsaw puzzle. It doesn’t have any thermogenic properties that will raise the bodies temperature to which is vital for fat loss, also, it’s lack of safe stimulants makes this a weak choice. If you do find you’re sensitive to caffeine, I would recommend trying InstantKnockout as it’s all natural ingredients and low amount of caffeine means you’re more likely to feel better and get the results you want at the same time. 

There is also one major factor that makes me question the reliability of this product, and that is…it contains a propriety blend of ingredients, meaning you won’t know for sure how much you will be getting of each ingredient. Don’t know about you guys, but I like to know how much I’m taking right down to the last milligram, and what I’m paying for. 

That being said, it might be okay for some who just want to break down excess fatty acids, but again the research on its effectiveness are limited. There are other fat burners on the market that have proven results with no side effects and carefully measured scientific amounts. Now that’s the type of product I would recommend. 

See Our TOP 3 Fat Burners

We`ve done all the hard testing for you so you can get shredded fast!

> Get lean and see your abs
> Have more energy and focus
> Maintain your strength
> Reduce your waist size

Check out which fat burner made our Top 3 list.

Best Ranked Fat Burners >>
David Watkins
Hey! David here the creator of HigherLevelLifter. Here you'll find loads of info on the safest and most effective supps available. Any questions, just hit me a DM. David W.

Leave a Reply