Burn XT Thermogenic Fat Burner (2024 Review) Does It Work?  

Benedict Ang, CPT, PN1-NC
Published by Benedict Ang, CPT, PN1-NC | Staff Writer & Senior Coach
Last updated: June 20, 2024
FACT CHECKED by Dr. Kristy Dayanan, BS, MD
We personally test every product featured in our reviews and guides. By ordering products anonymously and getting a group of independent testers, we are able to get first-hand experience and provide data-driven recommendations. Learn more.

Burn XT thermogenic fat burner is a dietary supplement that we have seen advertised a lot.

Over the years, we have tested over 50 of these supplements, and in most cases, they fall way short of the mark.

So, our team got together with a few clients to go through our extensive supplement testing routine.

And in this Burn XT thermogenic fat burner review, we’ll give you a load of details about what's actually in it, the science behind it, and whether we would recommend it.


Rated 4.2/5


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Who is it for?

Who is it for?

  • Men needing reliable thermogenic effects
  • Those wanting natural ingredients

Who is it not for?

  • Those prone to jitters

Final Verdict

Reliable thermogenic fat burner with natural ingredients. Effective but may cause jitters for some users.

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​What is Burn XT?

Burn XT supplement product close up

Burn XT is a weight loss supplement that falls under the thermogenic fat burner category. It’s based on a formula that uses natural and powerful fat-burning ingredients to boost fat metabolism. It may also helo suppress appetite and hunger cravings by making you feel full for longer.

Made by a company called Jacked Factory, this fat burner should also result in an energy boost from releasing those fat reserves. Jacked Factory is known for a range of fat burners and weight loss supplements in the Burn product line.

Those are great claims to make, but do they actually live up to the scrutiny of a dietitian? Let’s have a closer look at the Burn XT thermogenic fat burner ingredients.


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Burn XT

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​Burn XT Ingredients

Supplement Facts of Burn XT

We got together with a dietitian to take a closer look at not only the ingredients but the dosage as well. We’ve seen it too often that the per day recommended dose is just too weak to properly trigger fat burning and appetite suppression.

Let’s see what she found out about the Burn XT thermogenic fat burner.

1 - Acetyl L-Carnitine (700 mg)

Jacked Factory claims Burn XT thermogenic fat burner contains an effective dose of Acetyl L-carnitine, which I was aware of as an ingredient in many recovery shakes.

But it does seem like there would be some evidence from the  Swedish School of Sport and Health Sciences that it also plays a role in fat oxidation [1]. Whether Acetyl L-carnitine is the most effective way to burn fat is still being debated in the nutrition science community.

If you want to know more about Acetyl L-carnitine, check out the 10 best L-carnitine supplements.

2 - Green Tea Leaf Extract (450 mg)

Green tea leaf extract powder

Believe it or not, green tea extract is actually one of the best-known fat-burning ingredients available.

Our dietitian pointed us to quite an extensive study that had noted positive effects on weight loss from green tea leaf extract [2].

And the dose of 450 mg per day seems to be good enough to trigger thermogenesis.

Related product: Universal Nutrition Ripped Fast Review

​3 - Caffeine Anhydrous (270 mg)

Caffeine anhydrous is also a well-known thermogenic fat burner.

Yes, that means that your morning coffee could actually be helping you burn off some of that stubborn body fat.

Now, I would point out that the average cup of coffee has about 100 mg of caffeine. That means that Burn XT could be giving you two and a half times as much per serving.

While it could increase fat loss, it might be a bit much for a lot of folks.

4 - Capsimax Cayenne Pepper Fruit Extract (50 mg)

Cayenne Pepper fruit extract

The cayenne pepper fruit extract has been extensively tested, and one recent study was able to establish good results with increased fat loss in men and women [3].

The same study also commented it seemed to suppress appetite as well.

However, you should note that the study applied a 2.5 mg dose of the active ingredient called capsaicin, compared to less than half that in Burn XT.

​A study published in PloS One found that consuming cayenne pepper for breakfast creates less appetite, so people eat fewer calories during the day.


​- Christine Ruggeri, Staff Writer at DrAxe.com

5 - Bioperine Black Pepper Fruit Extract (5 mg)

This doesn’t directly burn fat, but instead, it has been shown to help with nutrient absorption. It could essentially contribute to getting the other weight loss  ingredients into your body faster [4].

It could even help with the digestion of your regular meals as well.

Spreading Out Your Intake

Woman holding pill

Make sure you spread out the two capsules, especially when you’re getting started. This would allow you to assess how your body reacts to fat burners.

Also, keep in mind that you may want to take the Burn XT thermogenic fat burner capsules just before a meal. I would suggest before breakfast and lunch and avoid taking it later in the day.

This is because the regular dose contains too much caffeine that could affect your sleep.

I also have a few clients who like to take fat burner pills before they start their regular exercise routine. It seems like the mental energy boost from caffeine helps with training motivation.

Burn XT Pros and Cons

Staring and looking at a single pill

OK, let’s start the positives. This thermogenic fat burner does seem to contain the right ingredients to help with weight loss.

A lot of online reviews highlighted that they were able to drop a fair bit of abdominal fat.

There are also positive reports about increased energy levels, which in part is probably due to the high dose of stimulants.

But for some people, this might be too high a boost that could lead to jitters and sleepless nights.
And the last thing we noted during our testing is that taking this product in the morning didn’t seem to suppress our appetite enough to extend fasting periods.

I also think that Jacked Factory could change the dosage a bit. You’re recommended to take one capsule in the morning and one at lunchtime.

However, if women wanted to take a smaller dose, then that would be impossible.

Check out our article on the supplements that will get you shredded.


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Burn XT

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  • Claims to provide physical and mental energy
  • ​Seems to work well for fat burning
  • Contains no fillers or additives to mess up your diet
  • Has a very high dose of stimulants
  • The product doesn’t seem to help with hunger cravings
  • The daily dose is limited to two capsules

Burn XT ​Side Effects

A person with a headache

There are two common side effects that we noted with this Jacked Factory thermogenic fat burner.

First of all, some people seemed to get some cramping after taking the capsule on an empty stomach.

This may be linked to some intolerance or allergy, so be careful with your timing.

The second issue is the rather high dose of caffeine. It’s not a major health issue, but you certainly have to avoid taking it later in the day if you want to avoid staring at the ceiling all night.

Want a caffeine-free fat burner instead? Check out our Stimulant Free Fat Burner Reviews.

Where Should You Buy It?

Buying online using a smartphone

You can buy Burn XT on Amazon or the official Jacked Factory website. The former might be the best option if you’re signed up to Amazon Prime for same or next-day delivery.

But the important thing to avoid is places like eBay or other marketplaces where you might increase your risk of a counterfeit product.

Burn XT User Reviews

Holding Burn XT user reviews giving thumbs up

To give you a bit more perspective on what other people are saying, we took a look at Burn XT reviews on Amazon as well as some forums and Facebook groups.

The biggest problem she initially had was with a high dose of caffeine. It did help her with weight loss, but she ended up switching to caffeine-free supplements instead.


- Letitia from Houston

Karen experienced 20 pounds of fat loss in 2 months and found an increase in energy for physical and mental activities to be quite helpful as well.


- Karen from Boston

He had mixed results. It did seem to trigger weight loss effects, but after a few weeks, the cramping didn’t settle down, so he had to stop taking this supplement.


- Charlie from Vancouver

Rob seems to be a bodybuilder, and he wasn’t specifically trying to lose weight. But during a cutting phase to get more ripped, he did report some positive effects from the ingredients.


- Rob from London

Thermogenic Fat Burner Alternatives


PhenQ is a potent fat burner that targets weight loss from five angles including fat burning, food cravings, fat accumulation, mood, and energy.

Unlike Burn XT, it contains natural stimulants that increase insulin sensitivity, which reduces your sugar cravings. It does a better job in suppressing appetite helping you feel full for longer, thus reducing your calorie intake.

It is suitable for both men and women looking to lose weight especially combined with a regular exercise, diet, and sufficient sleep.


After reviewing LeanBean, our team found out that it's a female fat burner that promises accelerated fat metabolism and reduced cravings.

It has better ingredients such as Glucomannan which suppresses appetite and contains green coffee bean extract, which gets natural caffeine into your system without causing jitters and sleepless nights, unlike Burn XT, which has a high dose of stimulants.

Instant Knockout

This fat burner by Roar Ambition contains potent ingredients, that support weight management, including glucomannan, that suppress cravings and vitamin B6, that promotes fat metabolism resulting in significant weight loss.

Unlike Burn XT, it contains L-Theanine, which promotes relaxation preventing energy crashes from caffeine.

Also, Instant Knockout does a better job controlling hunger cravings and our clients reported noticeable weight loss.

Fat burner we recommend: PhenQ Fat Burner Review

Is It Suitable For Long-Term Use?

While many reviews highlight the short-term effects of Burn XT, it's crucial to consider the long-term implications.

Prolonged use of any supplement, including Burn XT, may lead to unforeseen changes in metabolism and body composition. These changes could range from altered metabolic rates to potential dependency on the supplement for weight management.

It's essential to approach Burn XT with caution for extended periods, as the long-term effects on the body's natural weight regulation mechanisms remain largely unexplored. While we didn't see any long-term side effects in our testing, we did note that several testers reported that the effects seemed to wear off ofter three months.


​​​Is Burn XT Safe?

​Yes, Burn XT is safe, as all its ingredients are generally safe. However, there is always a chance of negative effects whenever you take a dietary supplement, so take a smaller dose of the product when starting out.

Other safe fat burners: LeanBean Fat Burner Review

​​​Does Burn XT Make You Poop?

No, Burn XT doesn’t make you poop. The ingredients included may support your digestive system by absorbing nutrients faster, but the thermogenic fat burner is not known for making you poop more as a result.

You may also like: Instant Knockout Fat Burner Review

​​​Is Burn XT Thermogenic?

​Yes, Burn XT is thermogenic. With ingredients like green tea extract and caffeine, it has been proven to be an effective supplement to boost metabolism and help you lose weight.

Thermogenic fat burner we recommend: Phen375 Fat Burner Review

​​​How Do You Use Burn Xt?

You use Burn XT by taking two pills during the day. One should be taken first thing in the morning with breakfast and the second at around lunchtime. It’s best to avoid them later in the day as the stimulants could impact your sleep quality.

Our Verdict on Burn XT

So, we do believe that this product works well as a thermogenic fat burner. However, because our test results highlighted some side effects and that it lacked hunger suppression, it didn't quite hit our strict quality standards.

What we would actually recommend is PhenQ, as I've seen it drive the most significant effects on weight loss for my clients. Users have reported that it helped them achieve a healthy lifestyle by burning more calories and extending fasting periods.

It also works to replenish electrolytes, so it's a good option whether you're doing regular exercise or some intensive fat-burning workouts.

Other users have also found it effective for fat loss. The images here speak for themselves:

Taylah results PhenQ
Nicola Before After v2

We Recommend This Instead


PhenQ CTA supplement product

Rated With Total Shape's Scoring System

Ingredient quality
  • Boosts energy for better gym performance
  • Suppresses appetite
  • Improves overall mood and brain function
  • Replenishes body's lost electrolytes
  • Get the BEST PRICE until the end of July
  • Can be only purchased through the company website
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About The Author

Benedict Ang, CPT, PN1-NC
Staff Writer & Senior Coach
Benedict Ang, CPT, PN1-NC is an ex-National Soccer player turned MMA and Kickboxing champion, with ACE CPT and PN1-NC certifications. His advice is rooted in education and experience, ensuring that readers receive scientific and battle-tested insights. His mission is to empower his clients and readers to realize their potential and become the best versions of themselves.
Learn more about our editorial policy
Dr. Kristy June Dayanan, BS, MD is an author with a BS degree from University of the Philippines and an MD from University of Perpetual Help System. Her ability to simplify medical science complexities and dietary supplement jargon for the average reader makes her a valued medical fact checker and reviewer.
Learn more about our editorial policy
Dr. Harshi Dhingra, MBBS, MD is a published peer-reviewed author and renowned physician from India with over a decade of experience. With her MBBS from Bharati Vidyapeeth and an MD from Rajiv Gandhi University, she actively ensures the accuracy of online dietary supplement and medical information by reviewing and fact-checking health publications.
Learn more about our editorial policy

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