Burn Ultra
Core Nutritionals

Burn Ultra , 56 Servings Raspberry Lemonade

Extreme Thermogenic Powder To Support Fat Burning*
Delicious, Convenient, Rapidly Dissolving Thermogenic Powder To Support Fat Loss*
8.6  out of 10  (9 Reviews)

Product Overview

Why does it have to be so difficult? You sit there, a bottle of pills in one hand, a tub of powder in the other, staring blankly at a seemingly endless wall of potions, tinctures, and tonics all with one purpose in mind – to support the way your body looks, and how you feel about it.

But how do you choose? Which is the best, or the worst? For that matter, how do you even decipher what's in the bottle in front of you, when the amount of every ingredient is masked behind a thousand promises and the ever-present, “proprietary blend.”

Confused about which “miracle breakthrough,” or “huge advance in science” to choose, you select the one that seems the most popular and go home. After three or four weeks, the only thing that's slimmer is your wallet, and you decide that all supplements are worthless.

But what if there was a better, more effective way? What if, instead of promising “breakthroughs,” “advances,” and “revolutions,” a company simply promised clinically-effective ingredients, at clinically-effective servings? What if, instead of shouting about “secrets of the trade,” a company admitted there really wasn't any – that the only true secret is who's willing to spend the time, effort, and money, to deliver an amazing product. What if this company – gasp! – told you exactly what was in the product? Wouldn't that be the better way?

Core Nutritionals' Core BURN Ultra powder is that better way. There are no gimmicks here, no tricks and trade secrets. Just the very best, most verified-effective ingredients at serving sizes known to exert powerful effects on the human body. With Core BURN Ultra, we have taken many of the same ultra-potent ingredients found in Core BURN, mixed in a few amazing new friends, and put the whole thing in a delicious, convenient, and rapidly-dissolving powder.

In the end, it's your choice: flashy magazine ads, or an unrivaled and extreme thermo that plain, flat-out works as promised. If we had to choose between a slim wallet or a slim waist, we'd choose the latter – because we'd choose Core BURN Ultra.

L-carnitine is a derivative of the amino acid lysine and, as certain conditions outpace the body's ability to produce it, l-carnitine is considered a conditionally essential amino acid. While endogenous biosynthesis of l-carnitine from the amino acids lysine and methionine is sufficient for essential processes – along with dietary sources of carnitine from protein-rich red meat, for example – dietary supplementation of carnitine may pose benefits supporting physiological conditions.

Unfortunately, due to excess metabolism of l-carnitine by microorganisms in the small intestine, exogenous supplementation with oral l-carnitine has proved ineffective. ALCAR, an acetylated version of l-carnitine, has considerably higher oral bioavailability, due likely to only partial hydrolytic metabolism. Once in the bloodstream, ALCAR plays a fundamental role in supporting the production of energy, can act as the catalyst for the beta-oxidation of long chain fatty acids by the mitochondria and supports the metabolism of carbohydrates.

Garcinia cambogia fruit extract (50% hydroxycitric acid):
Garcinia cambogia, more commonly known under a variety of names, including the tamarind, is a small tropical fruit endemic to Indonesia. This plant has come under increased media attention over the past few years, due largely to the purported effects of its principal constituent, hyrdoxycitric acid, or HCA.

HCA itself is a derivative of citric acid. This enzyme is an extra-mitochondrial enzyme (meaning it sits outside the mitochondria) chiefly supporting a process known as de novo lipogenesis – or the production of fatty acids from glucose.

Green coffee extract (50% chlorogenic acid):
Chlorogenic acids are phenolic compounds created during the metabolism of various isoquinic acids found in the leaves of both coffee and tea. In addition to the well-established sympathomimetic effects of coffee and tea's constituents, recent research suggests a range of other potential benefits for compounds such as chlorogenic acids.

Recent literature suggests that the consumption of both green coffee, as well as standardized extracts of CGAs, support the vasculature and support vasoreactivity, assisting with body weight reduction in both mice and humans, and modulate glucose metabolism via the glucose-6-phosphate pathway.

Caffeine (1,3,7-trimethylxanthine) and Theobromine (3,7-dimethyl-1H-purine-2,6-dione):
Caffeine is the most widely consumed, and perhaps one of the most reviewed, psychoactive compounds. Its physiological effects in a range of areas have been well-documented, including exercise performance, information processing, alertness and mood enhancement, attention, and awareness, along with its anti-lipogenic and lipolytic abilities.* Caffeine is also the most well-known in the methylxanthine compound class, the constituents of which inter-metabolize into one another in the human body and largely share similar effects.

Various clinical trials have demonstrated that xanthines – including caffeine and theobromine – support lipolytic (the breakdown of fat tissue into fatty acids) and oxidative (the actual ‘burning' of fat) actions as sympathomimetic amines. In less scientifically-complex parlance, this means caffeine is helping your body to preferentially use fat tissue as a fuel source for the oxidative provision of ATP (your body's energy currency).

Evidence for caffeine's capacity as a lipolytic is widely available. In a clinical study featuring four separate trials, for example, caffeine was found to significantly support fatty acid metabolism (as measured by serum fatty acid concentration), resting metabolic rate, and total fat oxidation – suggesting the preferential substrate selection spoken about above occurs in both normal and overweight individuals.* Other trials have demonstrated the effects of methylxanthines on total fat mass (reduction), lean body mass (increases), stamina and endurance, as well as cardiovascular capacity.*

Additionally, as selective cAMP potentiators, through the beta-adrenergic pathway, caffeine and theobromine have been hypothesized to exert a synergistic effect on lipolysis when combined with forskolin.*

Coleus forskohlii root extract (10% forskolin):

Coleus forskohlii is a small perennial endemic to various tropical regions in the world, including South America, sub-Saharan Africa, and India. While the West has recently taken interest in the plant due to the pharmacological properties of its primary bioactive, forskolin, Coleus forskholii preparations and tinctures have been used in both South American and African traditional folk medicinal systems, as well as extensively within Ayurveda.

Due to the ever-increasing interest in the plant's verifiable pharmacological and physiological effects, however, Coleus forksholii and its extracted constituents have been the subject of numerous animal and human clinical trials in the past decade. These trials have demonstrated the plant to have various effects and applications, including as a lipolytic and anti-lipogenic, and as a powerful antioxidant.*

A recent double-blind, randomized, and placebo-controlled human clinical trial featuring men found that the daily implementation of Coleus forskholii, combined with diet and exercise for twelve weeks, led to significantly better weight loss outcomes as compared to controls. Overweight men in the forskolin group experienced not only improved body composition (as measured by both body fat percentage and total fat mass), but also statistically significant increases in lean body mass.*

Coleus forskholii – and more specifically, forskolin – achieves this effect by rapidly, potently, and dose-dependently increasing an important metabolic enzyme known as adenylate cyclase.

In more basic terms, this means that forskolin quite literally frees up more fatty acids to be used as fuel for exercise – more or less the perfect scenario in a product such as Core BURN Ultra!

Bacopa monnieri (50% bacosides):

Bacopa monnieri, also known as the water hyssop commonly, or as Brahmi in Ayurvedic texts, is a small creeping herb endemic to sub-tropical India. The herb has been used in traditional Indian herbology for well over one thousand years, with its first recorded usage coming in the 6th century A.D.

More recently, BM has been the subject of numerous cognition and memory trials, as the plant may have a nootropic effect. Likely through modulation of the serotonin reuptake system, clinical trials in healthy humans have demonstrated that BM possesses a significant supportive effect on brain health.

Beyond cognition and memory support, BM has also been demonstrated to function as an adaptogen and relaxant – which in the Core BURN Ultra formula may help to smooth the effect curve of the product's stimulants, reducing jitteriness.*

Advantra-Z® Bitter Orange Extract (Citrus aurantium) (fruit) (50% synephrine):
Synephrine is a naturally-occurring alkaloid with adrenergic agonist activity, with a phenethylamine base structure. Despite its chemical similarity to these compounds, synephrine in its various isomers exerts unique effects on adrenergic receptors, in particular, and the human body, in general.*

Synephrine exists in three isomer forms: para-, meta- and ortho-synephrine. The molecular changes between the three isoforms are minute, but even this small change results in significant alterations to each isomer's physiological and pharmacokinetic profile. Two of synephrine's isomers, both p- and m-synephrine, have been shown to naturally occur in mammals (in low concentrations). As a sympathomimetic, synephrine has been the subject of numerous trials, assessing its effects on weight management, thermogenesis, metabolic rate, and caloric expenditure support.*

In addition to studies on synephrine in its various isomers, Advantra-Z®, the specific form of synephrine utilized in Core BURN Ultra, has itself and in combination with other ingredients, been the subject of various clinical trials in humans. In a randomized, double-blind, placebo-controlled trial featuring 70 obese adults, a formulation containing Advantra-Z® was found to support a reduction in fat mass and body weight, while leading to an increase in lean mass.*

Combined with not only caffeine, but the other ingredients in Core BURN, Advantra-Z® appears to be a powerful weapon in the arsenal for body composition and weight management.*

PURENERGY™ (Caffeine Pterostilbene Complex)
PURENERGY™ is a highly interesting, novel new dietary ingredient created by combining caffeine (at a 43% proportion) with pTeroPure, a 99% pure all-trans pterostilbene (at 53% proportion).

Pterostilbene is, in turn, itself a highly interesting compound, and the subject of considerable excitement and clinical research within the medical community. Found in small concentrations in blueberries and grapes, pterostilbene is a dimethylated version of the well-known compound resveratrol, and as a consequence, appears to share many of its beneficial physiological effects. Pterostilbene, in addition, has been hypothesized to exert unique effects in the human body through both genomic and enzymatic pathways, including functioning as an antioxidant, as well as playing a role in the regulation of glycolytic/gluconeogenic enzymes such as hexokinase, glucose-6-phosphatase, and fructose-1,6-bisphosphatase.

In combination as PURENERGY™, caffeine and pterostilbene have been the subject of a single, but promising, human trial. The results from this trial demonstrated:

  • PURENERGY™ delivers almost 30% more caffeine into the blood than ordinary caffeine.
  • The rate of caffeine absorption is significantly slower with PURENERGY™, by about 30% as compared to ordinary caffeine*
  • The half-life of caffeine from PURENERGY™ is extended significantly by about 25% over that of ordinary caffeine.*
  • At 4 hours, there was 45% more caffeine from PURENERGY™ compared to ordinary caffeine alone*
  • At 6 hours, there was 51% more caffeine from PURENERGY™ compared to ordinary caffeine alone.*
  • At 6 hours, subjects taking PURENERGY™ showed significantly less fatigue and greater concentration compared to baseline. Ordinary caffeine did not.*
  • At 6 hours, subjects taking PURENERGY™ showed improved energy, alertness and focus compared to baseline. Ordinary caffeine did not.*

Coupled with a lack of adverse events seen in the trial, PURENERGY™ may represent a significant leap forward in the dietary supplement field.

Ratings & Reviews

Burn Ultra
Overall Rating
9 Ratings
Verified Buyer Rating
7 Ratings
Average Flavor Rating
2 Flavors
Top Rated Flavor
Raspberry Lemonade
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Mar 26, 2018
Verified Buyer
  • 10 Raspberry Lemonade

One of the best powdered thermogenics on the market, and I've taken my fair share. Tastes incredible, and 175mg caffeine/scoop means you can safely take two scoops per day. I take 1 scoop pre-workout and a second scoop before dinner.

Jan 25, 2017
Verified Buyer
  • 8 Raspberry Lemonade

I have tried other weight loss products so far this one has worked the best. I have lost 5 pounds in a month. The only thing that sucks is the flavor could be better.

May 16, 2016

Core Nutritionals books Burn Ultra as a gimmick-free, no-nonsense fat burner that is transparently formulated and well-dosed. The formula is pretty interesting - clearly designed for multiple uses per day with the maximum dose being 3 scoops in a 24 hour period or great for a two scoop pre-workout. Personally, I found that it is best to double scoop Core Burn Ultra before workouts. The formula feature a mix of non-stimulant and stimulant fat mobilizing, re-composition promoting compounds. The blend features around 172 mg of caffeine per scoop 50 mg of theobromine and 50 mg of Advantra Z. This is a pretty mild stimulant blend at 1 scoop, but at two scoop the combination is formidable: ~344 mg caffeine, 100 mg theobromine, and 100 mg of Advantra Z (50% synephrine). The ALCAR, Forskolin, green coffee been extract, and bacopa monnieri are all excellent additions to the formula, especially the 125 mg of 20% forskolin per scoop. The formula is excellent. I think it is a strong 9.5 out of 10. The versatility is great, the ingredient are great, I would like to see the inclusion of green tea extract and yohimbine. I jumped in with two scoop of Burn Ultra as a pre-workout, which is how I used it for pretty much the entirety of the 56 serving tub. The energy was awesome. There was some intensity to it with some decent mood elevation. Despite the intensity, the energy was still smooth and without crash; it was quite long-lasting. Core Burn made cardio workouts a lot easier and more fun. I would also work up awesome sweats workout after workout. I consistently soak my clothes during both lifting and cardio workouts. The focus is pretty good on Core Burn and seems to improve with continued use. I would say the thermogensis was great! Core Burn isn't a complete pre-workout so if you are looking for pumps or ergogens, they will have to be stacked. I didn't evaluate the weight loss effects of Core Burn because I wasn't on a caloric deficit, but I think Core Burn would provide excellent weight loss support. I definitely think the acute effects of a powdered fat burner seems superior to that of pill-based fat burners, especially in the intensity of their effects. Effects are a 10 out of 10. The mango flavor was pretty enjoyable even though it wasn't the most appetizing color. The flavor was sweet and dry - a decent representation of mango. There was some grittiness to two scoops in ~8 oz. Use of a shaker improves the mixability a bit. The mango flavor is a 9 out of 10. Overall, Core Burn is a 9.7 out of 10.

Sep 28, 2015
Verified Buyer
No written review.
Jul 15, 2015
Verified Buyer

This stuff worked pretty good for me. I was taking this for a month and lost 12 lbs in 3 weeks. It didnt give me jitters or upset my stomach. It may not work for everyone, but i would definitely recommend this.

Apr 08, 2015
Verified Buyer

I have been trying to lose weight for quite a while with little success. I have someone who is giving me help in this matter and it was s****ested that I use a thermogenic powder to increase my metabolism during the day. I bought several different brands to see what one I would like best and so far this has beaten the others I have tried hands down. I take a full dose first thing in the morning and then 1/2 of a dose every 3 hours or so until about 6pm or so. I'm not all jittery and stuff at all but maintain a constant level or so it feels. It doesn't mix the best and you have to swirl the last gulp to get everything. It doesn't taste bad but I usually take it with a BCAA powder. I lost the most weight with this product - it works!

Mar 09, 2015

I tried some of Core's other products and thought they were very effective so I gave this a shot. The taste is good. Not too Blueberry and none of that artificial tea taste. There will be some grit in the bottom of the shaker. I take a single scoop in the morning and it kicks in FAST. No flushness, No Jitters, just steady energy. I normally call BS on "mood enhancement" but I will say Im pretty happy after drinking this. So maybe there is something to that. I believe this is a very effective thermionic but just remember you are going have to still exerciser and watch what you put on your plate. NOTHING IS GOING TO MAKE YOU LOSE WEIGHT WITHOUT DIET AND EXERCISE

Feb 27, 2015
Verified Buyer

Taste amazing. Helping me get shredded and train for physical fitness tests. Warning it you do get a lot of sinkers in it.

Feb 17, 2015
Verified Buyer

I can't tell if this thermogenic works at all. I don't feel any different taking the two scoops in the morning and the second in the afternoon. I'm on my second tub, I'll try the 8 weeks on and then the rest period and see if I notice a difference in body fat loss. This **** doesn't mix at all. I've tried mixing with a fork, blender bottle, and even a blender and it never goes into solution. It's so grainy it's like drinking sand, it's pretty hard to choke down. As for the flavor, I drink 5+ cups of green tea a day, I was pretty excited for the flavor... but it's awful. It's one of the worst things I've ever tasted. It really makes me thing CORE didn't test this stuff at all before putting it out. I use their other products and love them

1 Size
56 Servings
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Raspberry Lemonade
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Price: $45.35  ($0.81 / Serving)
Flavor Rating: 9.0

What's in Core Nutritionals Burn Ultra

280 Grams Raspberry Lemonade
Serving Size: 1 scoop (5 grams)
Servings Per Container: 56
Amount Per Serving % DV
Acetyl-L-Carnitine HCl 500 mg **
Garcinia cambogia Extract (fruit) (60% hydroxycitric acid) 500 mg **
Green Coffee Extract (Coffee arabica) (bean) (50% chlorogenic acid) 250 mg **
Caffeine (1,3,7-trimethylxanthine) 150 mg **
Coleus forskohlii Extract (root) (20% forskolin) 125 mg **
Bacopa monniera Extract (whole plant) (50% bacosides) 100 mg **
Advantra-Z® Bitter Orange Extract (Citrus aurantium) (fruit) (50% synephrine) 50 mg **
PURENERGY® (Pterostilbene-Caffeine) 50 mg **
Theobromine (3,7-dimethyl-1H-purine-2,6-dione) 50 mg **
** Daily value not established.
Other Ingredients:
Natural and Artificial Flavors, Citric Acid, Sucralose, Silicon Dioxide, Sodium Citrate, Potassium Chloride

Directions For Burn Ultra: To assess tolerance, mix 1 scoop with 8-12 ounces of water and consume first thing in the morning. An additional 1 scoop can be taken 5-6 hours later. Do not use longer than 8 continuous weeks without a 4 week break.

Warnings: Do not use if pregnant, nursing, or under the age of 18. Consult your healthcare provider before using this product, especially if you are taking any prescription medication, over the counter medication, dietary supplement product, or if you have any pre-existing medical condition. Immediately discontinue use and consult your health care professional if you experience any adverse reactions. Do not exceed recommended serving. This product contains approximately 172 mg of caffeine per serving, and may not be appropriate for stimulant-sensitive individuals. Do not use in combination with caffeine or any other stimulants, including but not limited to, coffee, tea, soda, and other dietary supplements or medications. Do not use under extreme conditions of heat, sleep deprivation, extreme cardiovascular exertion or dehydration. Do not combine with alcohol. Do not use if safety seal is broken or missing.Keep out of reach of children.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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