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 cause weight loss? 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 or not the supplement is likely to cause weight loss.
We’ll also analyze the ingredients in Burn XT to share our opinion on whether or not the supplement is effectively dosed, and whether or not it's healthy.
Finally, we’ll feature a cost comparison documenting which retailer sells Burn XT for the best price, and feature real Burn XT customer 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 peer-reviewed journal.
This is the gold standard of product research, and we commend Jacked Factory for funding legitimate clinical research.
The trial tested whether or not Burn XT could increase calories burned at rest, and what its effects on the mood of participants was.
Burn XT was shown in the clinical trial to increase energy burned at rest by around 150 calories per day, which equates to potential weight loss of around one 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 likely to be effective for at least some degree of weight loss.
Ingredient Analysis
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 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 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 greater anxiety, and may 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 confusing, 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 should be 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.
Real People Try Burn XT
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:
Does Burn XT Cause Side Effects?
Since Burn XT contains at least one stimulant, it may cause side effects in some individuals.
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 confer a greater risk of side effects than most supplement categories.
Our Clean Weight Loss Picks
Ceylon cinnamon was described as "an effective anti-obesity agent" in a 2022 meta-analysis. The study authors concluded that effects were greater at doses at or over 3 grams daily.
Illuminate Labs Ceylon Cinnamon Extract is our standardized Ceylon cinnamon supplement which is third-party tested to ensure purity and potency.
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.
Both of the products mentioned in this section are entirely free of additive ingredients that we consider to be unhealthy.
Where to Get the Best Price
Burn XT is sold at a variety of online retailers.
Here’s a price breakdown for a one-time purchase of 120 capsules at the time of updating this article:
Vitamin Shoppe: $69.98 (free shipping, link)
Brand website: $54.99 (plus shipping, link)
Amazon: $44.99 (free shipping, link to official Amazon listing)
Burn XT is currently around 25% cheaper at Amazon than at the brand's website when factoring in shipping fees.
Customers Rate Burn XT
Amazon is a better resource for honest customer reviews than a brand’s website in our opinion.
At the time of updating this article, Burn XT has been reviewed over 75,000 times on Amazon, and has an average review rating of 3.8 out of 5 stars.
A top positive review from a verified purchaser comes from a user named “crunchylicenseplates” who gave the product a 5/5 rating:
“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.”
A top negative review from a verified purchaser is written by a user named “Mia Winder” who gave the product a 1/5 rating:
“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.”
Burn XT currently has an average review rating of 4.5 out of 5 stars on Google.
Burn XT Pros and Cons
Here are the pros and cons of Burn XT in our opinion:
Pros:
- Clinically shown to increase energy expenditure
- Clinically tested in peer-reviewed journal
- Free of unhealthy additive ingredients
- Likely to cause weight loss
- Only one stimulant ingredient
- Highly positive Google reviews
Cons:
- 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
- Brand's website charges for shipping
