Best Intermittent Fasting Fat Burner 2023

Protect your muscle mass while accelerating fat loss with the right fat burner supplement

Looking for quicker results with fat loss?

Intermittent fasting is something that can really help you achieve the lean or shredded look you want to achieve.

Countless clinical studies have shown intermittent fasting to work.

Check out this conclusion in a study conducted in 2018 to see that we’re not just making stuff up like other websites[1]:

“four studies found that intermittent fasting was effective for short-term weight loss among normal weight, overweight and obese people.”

However, one thing at risk when aiming to cut body fat is muscle mass. It can be difficult to keep hold of your hard-earned muscle gains while you achieve a calorie deficit…

..a calorie deficit, of course, being crucial to fat loss.

Here’s where an effective fat burner can come in.

The right fat burner will contain nutrients that are proven to protect your muscle mass while you cut body fat or weight. As well as including tried-and-tested thermogenics to further encourage your body to target body fat loss.

In this article, we’ll show you which ingredients in fat burner supplements are a perfect compliment to an intermittent fasting diet.

As an added bonus, we’ve also found the best fat burner for intermittent fasting, to help save you time and get you to your results faster – without any BS inbetween.

Top Ingredients for Intermittent Fasting Fat Burners

Let’s start with the basics.

The basics being the ingredients you want to look for when choosing a safe and effective fat burner supplement.


Because the ingredients in a supplement are like the engine of a car. If the engine is rusty or damaged, you don’t want to buy that car.

Similarly, you want a fat burner that contains tried-and-tested nutrients that are proven to promote fat loss – without any side effects.

But the most important thing while intermittent fasting is protecting your muscle mass while encouraging your body to burn more fat. 

Here are the best ingredients for doing exactly as described above:

Best for Ingredient for Muscle Mass Protection: HMB

Short for β-Hydroxy-β-methylbutyrate, HMB is a metabolite of leucine. Leucine being the most important branched chain amino acid (BCAA) when it comes to preserving and building muscle mass.

So, straight away, it doesn’t take a genius to figure out that HMB can be useful in protecting muscle mass while you’re cutting body fat during a diet.

So what makes it more beneficial than leucine?

You’re probably wondering the exact question above.

Well, Leucine is actually more beneficial when it comes to muscle protein synthesis (in simple terms, gaining muscle mass).

However, HMB has shown to be better at reducing the rate of muscle protein breakdown in clinical studies [1]. Which makes it more important while you’re aiming to cut body fat levels.

Bottom Line: HMB is key to preserving muscle mass while you’re in a calorie deficit with diets such as the intermittent fasting diet. But when you’re in a calorie surplus and aiming to gain muscle mass, we recommend taking BCAAs instead.

Promotes Fat Loss Without loss of Muscle Mass: Coleus Forskohlii

Coleus Forskohlii is a relatively new addition to fat burner supplements.

It’s basically a herb that’s been used in traditional ayurvedic medicine for a very long time. It’s often associated with it’s ability to induce fat loss and reduce fatigue.

But here’s what makes Coleus Forskohlii particularly effective during an intermittent fasting diet; it’s shown to significantly decrease body fat percentages in human subjects, without any reductions in lean body mass in clinical studies [2].

In plain terms, the above means that Coleus Forskohlii can help you lose body fat without saying goodbye to any muscle gains. Exactly what we’re looking for in a fat burner to take while intermittent fasting.

Bottom Line: There’s been enough clinical studies showing the beneficial link between loss of body fat and preservation of lean muscle mass with Coleus Forskohlii. To make it a key addition to any fat burner you take while in a calorie deficit. 

Best All-Round Thermogenic to Promote Fat Loss: Cayenne Pepper Extract

What do you do when you want to add some spice to your food?

You add some chili powder.

The thing that makes chili peppers such as Cayenne Peppers spicy (capsaicin) is exactly what makes them effective thermogenics; in a nutshell, for those that don’t know, thermogenics are nutrients that can raise your body temperature and encourage your body to burn more body fat and calories.

Even if you don’t look at the science behind how Cayenne Pepper Extract can promote body fat, it’s pretty obvious that it works.

But we know that you (our loyal readers) often ask us for proof via clinical studies, so of course, we’ll include some for you.

One study by Zheng J published in 2017 [3] concluded:

“In summary, capsaicin plays a critical role in human and has multiple benefits for metabolic health, especially for weight loss”

The above reference should be enough to convince you.

But just in case, a different study conducted by Rodgers J in 2018 [4] found that there was a significant difference in fat loss results between 2 groups: 1 group that supplemented capsaicin (that lost more body fat), and a second group that was provided with a placebo.

A blue dinner plate with the words 'burn fat' on them to symbolize intermittent fasting

Best Fat Burner for Intermittent Fasting

We’ve shown you the ingredients you need to be looking for when searching for a safe and effective fat burner. To help compliment your intermittent fasting diet regime.

Well, to save you even more time…we’ve found, tried-and-tested what we believe to be the best fat burner for intermittent fasting available on the market.

How did we choose?

You don’t choose an American Football player to play professional Soccer. They might do okay, since they are elite athletes – but Tom Brady isn’t going to be better than Lionel Messi at Soccer.

It’s always best to choose a supplement specialized in doing something specific. Such as intermittent fasting.

That’s why it’s not the best idea to choose a ‘normal’ fat burner while you’re intermittent fasting.

Good news: we found a fat burner that’s specifically been created to support intermittent fasting diets.

Check it out:

#1. PhenQ: Overall Best Intermittent Fasting Fat Burner


PhenQ has been found to be an excellent supplement for persons who practice intermittent fasting. Its all-natural components provide you with plenty of energy while also suppressing your hunger. It’s a good idea to feed your body with dense nutrients like those contained in fat burner tablets while fasting.

It produces rapid benefits when paired with intermittent fasting. Users of the product give positive feedback, which you may take into account while deciding on the best fat burner for intermittent fasting.


  • Improves your body’s natural fat oxidation mechanism.
  • If you are not satisfied, the company will refund your money.
  • It contains calcium and other nutrients that are essential for fasting success.
  • Bundled packages qualify for discounts.


  • Some energetic compounds can cause sleep disruption.
  • It is not recommended for anyone under the age of 18, or for pregnant or nursing mothers.


  • Caffeine Anhydrous
  • Calcium Carbonate
  • a-Lacys Reset Nopal
  • L-Carnitine Furmarate
  • Capsimax Powder

While fasting, the chemicals in PhenQ give your body with quality support. It contains a-Lacys Reset, a revolutionary scientific formula that aids the body’s natural fat burning process through thermogenesis. As you follow your intermittent fasting schedule, your body will feel pleased.

To Buy PhenQ, 

#2. Burn Lab Pro® Fat Burner

Burn Lab Pro Review Featured Image

To Buy Burn Lab Pro Fat Burner, 

First opinions are very important. And the good news is that the clinical looking box and bottle of Burn Lab Pro Fat Burner looked premium, safe and effective.

At a price of $50 per bottle, it’s certainly not the cheapest fat burner on the market. So, it’s good that it looks the part.

Burn Lab Pro® haven’t cut costs with this fat burner.

It contains only premium grade ingredients, such as Capsimax® (a highly potent, patented form of Cayenne Pepper Extract). As well as patented Forslean®, which is commonly acknowledged as the best form of Coleus Forskohlii available.

In fact, even the capsules that the ingredients come in are made from patented prebiotic fiber capsules (Nutricaps®). Meaning even its capsules are beneficial.

These Nutricaps® are much better than the usual gelatin/cellulose or HPMC cheaper capsules that other companies use.

And most importantly, Burn Lab Pro® Fat Burner was specifically made to be the perfect compliment to an intermittent fasting diet.

For this reason it contains our dream combination of HMB, Cayenne Pepper Extract, Coleus Forskohlii – as well as Black Pepper Extract to help improve its bio-availability (absorption and digestion).

Here are Burn Lab Pro ® Fat Burner’s ingredients:

Burn Lab Pro Fat Burner Supplement Facts

Serving Size: 2 Nutricaps® Capsules
Servings per Container: 30

  • Coleus Forskohlii (Forslean®) – 250mg
  • HMB – 1000mg
  • Cayenne Pepper Extract (Capsimax®) – 50mg
  • Black Pepper Extract (BioPerine®) – 2.5mg

As you can see above, there are optimal dosages of each ingredient in this fat burner.

For example, studies have shown that it’s safe to consume upwards of 3000mg of HMB [6], while Burn Lab Pro contains an effective (and certainly safe) 1000mg HMB dosage per serving.

You can check out my personal 8 week transformation while using Burn Lab Pro Fat Burner (alongside an intermittent fasting diet) below…

Burn Lab Pro Before and After Transformation Pictures

To Buy Burn Lab Pro


Read our Full 
> Burn Lab Pro Review <

My Personal Favorite Intermittent Fasting Method

There are many different ways to succeed with Intermittent Fasting.

I personally struggled with most methods. For example, fasting for 2 days out of 7 in the week is simply not viable long-term.

But the one I saw results with, and can continue sustainably by fitting into my lifestyle, is the 16/8 method.

The 16/8 Intermittent Fasting Method

As mentioned, this is the most sustainable intermittent fasting method (in my honest opinion).

The quick summary is that you basically fast all night and skip breakfast. It’s as easy as that.

Here are the specifics: 

  • Fast for 16 hours, with an eating window of 8 hours.
  • I have my first meal at around 12 (midday at lunch).
  • I have my last meal by 8pm and stop eating at this time.
  • Sleep and repeat daily

It’s definitely the most ‘non-extreme’ version of intermittent fasting that you can follow. And even celebrities such as Terry Crews has seen benefits from the 16/8 method.

As you can see from my 8 week transformation picture further above, the 16\8 method along with Burn Lab Pro Fat Burner and BCAA worked for me.

Supplement facts label for Burn Lab Pro showing the ingredients on the bottle next to its box
The supplement facts label for Burn Lab Pro on its bottle.

Best Intermittent Fasting Fat Burner: Conclusion

Ultimately, losing body fat is down to being in a calorie deficit. That’s the truth without any BS there.

However, being in a calorie deficit isn’t as simple as it seems; it comes with a whole host of problems, one of which is putting your hard-earned muscle mass at risk from being lost in the process.

That’s really where fat burners can come into play.

If you choose one that contains either A-Lacys Rest or HMB, you’ll be onto a winner to help supplement your intermittent fasting diet.

HMB consumed alongside other tried-and-tested nutrients found in Burn Lab Pro Fat Burner (Cayenne Pepper Extract and Coleus Forskohlii) will further encourage your body to burn fat at a quicker rate than it would naturally.

But remember. If you’re not in a calorie deficit, then no supplement or diet will help you.

Should you be in a calorie deficit, follow the 16/8 intermittent fasting diet and take the right fat burner. Then you’ll give yourself the best chance of success.


[1] Genesan K. Intermittent Fasting: The Choice for a Healthier Lifestyle. Cureus. 2018 Jul; 10(7): e2947.

[2] Godard MP. Body composition and hormonal adaptations associated with forskolin consumption in overweight and obese men. Obes Res. 2005 Aug;13(8):1335-43.

[3] Zheng J. Dietary capsaicin and its anti-obesity potency: from mechanism to clinical implications. Biosci Rep. 2017 Jun 30; 37(3): BSR20170286.

[4] Rodgers J. Capsaicinoids supplementation decreases percent body fat and fat mass: adjustment using covariates in a post hoc analysis. BMC Obes. 2018; 5: 22.

[5] Howatson G. Exercise-induced muscle damage is reduced in resistance-trained males by branched chain amino acids: a randomized, double-blind, placebo controlled study. Int Soc Sports Nutr 9, 20 (2012).

[6] Wilson GJ. Effects of beta-hydroxy-beta-methylbutyrate (HMB) on exercise performance and body composition across varying levels of age, sex, and training experience: A review. Nutr Metab (Lond). 2008; 5: 1.

[7] Bounty PL. The effects of oral BCAAs and leucine supplementation combined with an acute lower-body resistance exercise on mTOR and 4E-BP1 activation in humans: preliminary findings. J Int Soc Sports Nutr. 2008; 5(Suppl 1): P21.

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