Burn XT Review: The Best Fat Burner?

Burn XT Review: The Best Fat Burner?

| |
| |
Read our Editorial Guidelines to learn more about what makes our site the premier resource for online health information.

Burn XT is a fat burner supplement sold by a brand called Jacked Factory. The brand describes this supplement as the “fastest growing fat burner supplement on the market” and claims that it has a clinical study supporting its efficacy.

But is Burn XT actually clinically shown to be effective for weight loss or are these just marketing claims? Does it contain effective doses of its active ingredients? Are there any dangerous or unhealthy additive ingredients? And how do real users rate and describe the effects of Burn XT?

In this article we’ll answer all of these questions and more as we review the clinical study on Burn XT to give our take on whether the supplement is likely to be effective or if it’s a waste of money.

We’ll also analyze the ingredients in Burn XT based on clinical research to determine if it’s effectively dosed and contains any questionable additives.

Finally, we’ll feature a cost comparison showing which retailer sells Burn XT for the best price and share real, unsponsored Burn XT user reviews.

Is Burn XT Proven to Work?

Burn XT was studied in a 2023 clinical trial published in the Journal of the International Society of Sports Nutrition, which is a legitimate, peer-reviewed journal. This is the gold standard of product research and we commend Jacked Factory for funding a legitimate clinical trial.

The trial tested whether Burn XT could increase calories burned at rest and what its effects on the mood of participants was.

Burn XT was shown in the research trial to increase energy burned at rest by a pace of around 150 calories per day, which equates to potential weight loss of around 1 pound every 23 days.

Our issue with the study design is that the researchers did not actually track weight loss, but rather tracked energy burned at 30, 60 and 180-minute post-ingestion intervals. 

Just because a supplement increases energy burned for three hours does not necessarily mean it will continue to increase energy burned at the same rate for 24 hours, so it’s challenging to predict how much weight loss and fat loss Burn XT can cause.

Based on the results of this clinical trial we consider Burn XT to be likely effective for at least some degree of weight loss.

But does the supplement contain research-backed ingredients for weight loss? We’ll review in the next section.

Ingredient Analysis

Burn XT ingredients

The ingredients in Burn XT are shown above.

Acetyl-l-carnitine is the first active ingredient, and we can’t find any clinical evidence that it causes weight loss.

L-carnitine, which is a very similar substance chemically, was shown in a 2020 medical review to cause weight loss, but the researchers concluded that “2000 [milligrams] l-carnitine per day provides the maximum effect in adults.” Even two capsules of Burn XT provide only 750 milligrams (mg) of acetyl-l-carnitine.

Green tea leaf extract is another ingredient that’s clinically shown to cause weight loss. However, it’s an ingredient that health-conscious consumers may wish to avoid.

As we referenced in our review of another supplement called Morning Complete, some research trials have found green tea extract to be toxic to the liver at high doses. We’d recommend that consumers speak with their doctor prior to using this ingredient.

Caffeine was shown in a meta-study published in the Critical Reviews in Food Science and Nutrition journal to cause weight loss. The two-capsule dose of 270 mg should cause more weight loss than the one-capsule dose, but may also cause more anxiety and negatively affect blood pressure.

Capsimax is a trademarked extract of cayenne, and we consider the doses of 25 mg (one capsule) and 50 mg (two capsules) to be relatively strange, given that the Capsimax website suggests the effective dose is 100 mg.

Bioperine is a trademarked black pepper extract used to increase the absorption of other active ingredients in the formulation, and the two inactive ingredients are safe and non-toxic.

Overall we consider Burn XT likely to be effective for weight loss and fat loss based on a review of its ingredients and their respective doses. However we don’t currently recommend the supplement due to our concerns over green tea leaf extract.

But how do real users rate and describe the effects of Burn XT? We’ll review in the next section.

Real, Unsponsored Burn XT User Reviews

A TikTok creator named “sarahweightlossharden” shared her experience taking Burn XT for weight loss:

@sarahweightlossharden So far recommend 🤷🏼‍♀️#weightloss #DADMOVES #PerfectAsWeAre #letsgo #fyp #foryou #burnxt #burnfat ♬ original sound - sarahweightlossharden

A YouTube creator named “WolfesMama” shares her experience using Burn XT supplements:

Does Burn XT Cause Side Effects?

Since Burn XT is a stimulant supplement, it may cause side effects in some users.

The clinical trial on Burn XT reported increased average systolic blood pressure, so patients with high blood pressure should speak with a doctor prior to using this supplement.

Stimulants can also cause jitteriness, anxiety and nausea in sensitive individuals. The caffeine dose in two capsules of Burn XT is equivalent to around 2.5 cups of coffee. This supplement may be inadvisable for consumers with anxiety, although it doesn’t contain concerning stimulant doses like some fat burner supplements we’ve reviewed on Illuminate Health.

Overall, we do not consider Burn XT likely to cause side effects in otherwise healthy adults, although we consider stimulant-based fat burners to be a higher risk for side effects than most types of supplements.

Where to Buy Burn XT for the Best Price

Burn XT is sold at a variety of online retailers. Here’s a price breakdown for a 120-count bottle at the time of updating this article:

Walmart: $69.98 (two orders required because only smaller bottle size available, link)

Vitamin Shoppe: $55.98 (two orders required, link)

Brand website: $54.99 (plus shipping, link)

Amazon: $54.99 (free shipping, link to official Amazon listing)

When factoring in shipping costs, Burn XT is currently around 10-15% cheaper on Amazon than at the brand's official website.

Real Customers Review Burn XT

Amazon is a better resource for honest customer reviews than a brand’s website in our opinion.

Burn XT has been reviewed over 70,000 times on Amazon with an average review rating of 3.8 out of 5 stars.

The top positive review from a verified purchaser comes from a user named “crunchylicenseplates” who claims the product causes weight loss:

“I started on the first of March and after eight weeks starting at 303 lbs and I have dropped 35 pounds with no exercise. My face is noticeably thinner, my gut is half the size it was and I have more energy and more flexibility…I was VERY pleasantly surprised when I started Burn XT that I had NO JITTERS!! My heart did run a little harder, yet I wasn't anxious all the time.”

The top negative review from a verified purchaser is written by a user named “Mia Winder” who claims to have experienced side effects:

“Today (Thursday) my heart rate has been high all day and I do not feel like myself. I do not feel like eating and I can't stop feeling like something is on my chest. I do not recommend this product. The only positive was that it did suppress my appetite because I was so nauseous that I didn't want to eat.”

Our Clean Weight Loss Picks

There are food-based nutrients which have been shown in medical studies to be effective for weight loss.

Dietary fiber was shown in a medical review published in The Journal of Nutrition to cause 16 pounds of weight loss in 6 months when combined with moderate caloric restriction (750 calories per day below baseline).

MBG Organic Fiber Potency+ is our top fiber pick because it's certified organic, provides 7 g of fiber per serving and costs under $1.85 per serving at the time of updating this article.

MCT oil was shown in a meta-study to cause more than one pound of weight loss over 10 weeks. This equates to potential annualized weight loss of 6 pounds per year with less than one tablespoon's worth of MCT oil per day.

Bulletproof MCT Oil is our top MCT oil product, because the only ingredient is MCT oil derived from coconuts. and it currently costs only $15.50 for over a month's worth of product.

Ginger intake "significantly decreased body weight" according to a 2019 meta-study on ginger and weight loss that analyzed data from 14 clinical trials.

Pique La Ginger is our top ginger product, because it's an organic tea in convenient crystallized form, and all that's needed is to pour the powder into a glass and add hot water.

All three of the products mentioned in this section are entirely free of additive ingredients that we consider to be unhealthy or unsafe.

Pros and Cons of Burn XT

Here are the pros and cons of Burn XT in our opinion:


  • Clinically shown to increase energy expenditure
  • Free of unhealthy additive ingredients
  • Likely to cause weight loss
  • Only one stimulant ingredient


  • Clinically shown to increase systolic blood pressure
  • Stimulants can cause anxiety in some individuals
  • Clinical study tested energy expenditure only at certain intervals and didn’t directly measure weight loss
  • More expensive on brand website
Stay up-to-date on our research reviews


Burn XT is one of the few fat burning supplements actually clinically shown to be effective. We consider it a mark of a high-quality brand to publish legitimate clinical research, and for this reason we consider Burn XT to be superior to the majority of fat burning and weight loss supplements we’ve reviewed on Illuminate Health.

We do not currently recommend this supplement due to the inclusion of green tea extract.

Burn XT was clinically shown to increase systolic blood pressure, so it may be inadvisable for patients with high blood pressure. The supplement may also cause anxiety in some individuals given that it’s a stimulant.

For consumers intent on purchasing Burn XT, Walmart and Vitamin Shoppe currently offer the best price.