Intermittent Fasting Supplements: Top 5 Buyers Guide

So you’re interested in Intermittent Fasting (IF) or you’re currently actually following an IF diet.

Either way, you’re here looking for the best intermittent fasting supplements to take – to help maintain muscle mass while in a calorie deficit or to just improve your performance.

We’ve tried and tested hundreds of different products on the market. And right now, we’ll be showing you the top options that you should be taking to get the best results for intermittent fasting.

Check out our top 5:


There’s a lot of broscience about BCAAs going around forums etc.

As a result, there have been some people saying “BCAAs don’t work”. Well, that’s not exactly the truth, bro.

Alright, so it may be true that taking BCAAs alongside a super high protein diet might not be worthwhile when trying to gain muscle mass. But you’re probably not trying to gain muscle mass while following an intermittent fasting diet.

Chances are your main aim is the be in a calorie deficit to lose body fat and increase muscle definition. And this is where BCAAs have shown to be particularly useful in clinical studies.

A study conducted in the Journal of the International Society of Sports Nutrition found that “BCAA supplementation in trained individuals performing resistance training while on a hypocaloric diet can maintain lean mass and preserve skeletal muscle performance while losing fat mass”.

In plain English, the above conclusion means that: BCAAs can save you from losing your hard-earned muscle mass while in a calorie-deficit aiming to lose body fat.

Top Recommended BCAA: Performance Lab BCAA

Finding a clean, high quality BCAA isn’t as easy as it sounds. You don’t want to just grab the first product you see on the shelves of your local store.

You might be disgusted to hear that many products on the market use pig fur or duck feathers as their amino acid sources.

That’s not a lie. In fact, a clinical study published in the American Journal of Food Sciences confirmed the above to be true.

That’s why we use Performance Lab BCAA; it’s a completely vegan-friendly product that sources its amino acids from AjiPure® which is found to be up to 6x purer than other amino acids brands. The magic is due to AjiPure® being combined with cutting edge NutriGenesis® technology, resulting in the most bioavailable BCAA we’ve seen.

Performance Lab BCAA also comes in capsules, so It doesn’t contain any artificial flavors or colors – making it the cleanest and highest quality product we’ve tested.

#2 Fat Burner

We’ve said this a couple of times already. If you’re following an intermittent fasting diet, then you’re end goal is most likely to lose body fat.

So, naturally, a fat burner supplement will be high on your priorities.

But not just any fat burner. A fat burner that contains ingredients to further help protect your muscle mass while in a calorie deficit.

Because let’s be honest. You don’t need a fat burner supplement to lose body fat…simply being in a calorie deficit will get the job done. So remember that no fat burner is a magic pill.

But what an effective fat burner should do is promote fat loss further while protecting muscle mass during fasted training – to make it perfectly suited to an intermittent fasting diet.

…and that’s exactly what Performance Lab Burn is made for.

Top Recommended Fat Burner: Performance Lab Burn

The main benefit that this fat burner offers is that it “helps you lose fat and keep muscle”. For us, that’s exactly what a fat burner should do – after all, no-one wants to lose hard-earned muscle mass while trying to get shredded.

To deliver this, Performance Lab Burn contains HMB; a clinical study concluded that HMB “promotes an advantageous reduction of fat mass and increase in fat-free mass”.

In order to help you burn more fat than you would normally, it contains tried-and-tested thermogenics such as cayenne pepper extract. Which has proven to boost your metabolic rate in numerous studies (in fact, there is actually a study titled “capsaicinoids supplementation decreases perfect body fat and fat mass” to prove our point).

We appreciate that Performance Lab Burn is a science-backed fat burner and not just fueled on unproven claims.

#3 Caffeine Supplement

It’s pretty well known that many people like drinking coffee while in the fasting stage of their intermittent fasting days.

There’s nothing really wrong with coffee. And to be honest, nothing is going to stop coffee-lovers from drinking coffee.

In fact, the good news is that caffeine consumption doesn’t officially break a fast (unless you follow that sh*tty trend and add butter to your coffee – since that will break your fast).

However, we bet you didn’t know that caffeine consumption depletes B-Vitamins. Well now you do.

Here’s where a caffeine supplement containing B-Vitamins can come in…

Top Recommended Caffeine Supplement: Performance Lab Stim

Heard about nootropic supplements? They’re products that are capable of improving your cognition (helping you to think clearer and perform better mentally).

Well, Performance Lab Stim is a next-gen caffeine pill that can also be classed under the “nootropic” category of supplements.

As well as delivering clean, natural caffeine. It also provides you with all the B-Vitamins that caffeine depletes in the exact quantities it depletes them in – helping to keep you fueled nutritionally.

The cherry on-top is the addition of L-Tyrosine, one of the most clinically backed nootropic ingredients to further improve your cognition.

In summary, this is an advanced caffeine supplement that you can take as a coffee alternative or to give you a clean energy boost for fasted workouts. Performance Lab Stim is also designed to stack safely with their non-stim fat burner and other products.

#4 Prebiotic

Gut health is something that’s seriously overlooked when it comes to fitness and overall health.

We bet you didn’t know that a prebiotic supplement can actually promote fat loss and strengthen your immune system, did you?

In fact, a clinical study states that “almost 70% of the entire immune system” is located in the gut.

Top Recommended Prebiotic Supplement: Performance Lab Prebiotic

Performance Lab Prebiotic has made use of the nutritional technology available when it comes to gut health.

Containing Orafti® Synergy1, which has shown to have a positive effect on immune system in numerous studies, it’s also free from allergens, gluten, soy, synthetic additives.

It’s also completely vegan-friendly, with its capsules being made from prebiotic fiber. Making it the cleanest prebiotic on the market, in our honest opinion.

#5 Multivitamin

Multivitamin supplements are arguably the most underrated in the industry. They kind of get a bad reputation from the really cheap products that turn you pee yellow.

Trust us, though. Multivitamins can offer a lot more benefits than changing the color of your urine…

When intermittent fasting, you’re having one or two less meals than you would normally (by skipping breakfast). And, more often than not, intermittent fasters are in a calorie deficit too since they often aim to lose body fat.

As a result, intermittent fasters need to obtain all their nutrients in less meals (and calories) than normal; to put that into perspective, people not keeping an eye on their calories often don’t consume the recommended amounts of vitamins and minerals.

Therefore, multivitamins provide great “nutritional insurance” to make sure you do obtain all essential nutrients for peak health.

Top Recommended Multivitamin Supplement: Performance Lab NutriGenesis® Multi

What sets this multivitamin apart is Performance Lab’s own patented NutriGenesis®  technology; they are able to produce “nature-identical” vitamins and minerals (completely with co-factors) that your body recognizes and absorbs as actual food.

The result? A next-gen multivitamin that actually improves your general health.

Performance Lab NutriGenesis® Multi delivers over at least 100% of the daily recommended values of over 17 essential vitamins and minerals too.

It’s also extremely clean too, being free from allergens, gluten, soy, synthetic additives, GMOs – and it’s also banned substance tested too.

Without a doubt (in our honest opinion) the cleanest and highest quality multivitamin on the market.

CLICK HERE to get the best deal for Performance Lab NutriGenesis® Multi for Men


CLICK HERE to get the best deal for Performance Lab NutriGenesis® Multi for Women


Intermittent fasting isn’t for everyone. But we’re guessing that you’re someone who enjoys skipping breakfast since you’re reading this article.

The fact is that most people who follow an IF diet are aiming to lose body fat/weight. Since this requires you to be in a calorie deficit, you have the challenge of consuming all nutrients that you need in fewer meals.

Supplements such as multivitamins will help provide you with nutritional insurance, so you don’t have to worry (as much) about getting the right vitamins or minerals through your meals.

Products such as BCAAs will then help protect your hard-earned muscle mass while you’re in a calorie deficit too.



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