Nugenix Thermo is a weight loss supplement. Its manufacturer claims that it’s effective because it can “promote thermogenesis,” which means that it can increase core body temperature and energy expenditure at rest. We reviewed Nugenix supplements very unfavorably in our overall review of the brand, but Thermo is a new supplement sold by the brand that we’re choosing to review individually.
Can a dietary supplement really increase core body temperature? Are the ingredients proven in medical research to be effective? Does Nugenix Thermo contain any questionable additive ingredients? And how do real customers review the supplement?
In this article we’ll answer all of these questions and more as we review every ingredient in Nugenix Thermo and share some real customer reviews.
Nugenix Thermo contains a large number of active ingredients.
Caffeine intake, specifically high caffeine intake, is associated with weight loss in medical research. However the dose in Nugenix Thermo is relatively low at 150 milligrams (mg) which is equivalent to around 1.5 cups of coffee. We cannot identify any studies showing this low of a dose causes weight loss, nor does Nugenix cite any, so we’ll consider this ingredient ineffective.
Morosil is an effective weight loss ingredient. It’s a patented extract of the blood orange fruit, and a clinical trial published in the Natural Product Research journal found it to cause 6.79 pounds of average weight loss over 12 weeks. The dose used was the exact same dose as in Nugenix Thermo.
Green coffee extract does appear to cause weight loss in clinical research, but we consider the 75 mg in this supplement to be underdosed. A 2011 medical review found that this ingredient caused a small but statistically significant amount of weight loss, but the doses used in every clinical trial reviewed were more than twice as much as in Nugenix Thermo.
Capsimax is a patented cayenne pepper extract that’s effectively-dosed in Nugenix Thermo. As we documented in our review of weight loss supplement PhenQ, 100 mg of this ingredient is proven in clinical research to cause weight loss.
Nugenix Thermo contains three other ingredients that we consider effective for weight loss but are underdosed in this formulation: guarana extract, green tea extract and Carnipure.
While there are a number of effective ingredients in this supplement, there are several that we recommend consumers avoid.
Green tea extract may cause liver injury in a small subset of patients as reported by Health Canada. We do not consider this likely given the relatively low dose of green tea extract in Nugenix Thermo, however we recommend avoiding this ingredient entirely to be safe.
Nugenix Thermo also contains a vitamin and mineral blend of vitamin C, niacin and chromium. We recommend avoiding dietary supplements with added vitamins and minerals, because it seems illogical to take supplemental vitamins and minerals without proof of a deficiency. Individuals taking vitamins and minerals starting with normal blood levels of those nutrients may end up with blood levels that are too high.
Overall we consider Nugenix Thermo likely to be effective for weight loss, and we consider it to have an impressive formulation compared to most weight loss supplements. It contains multiple effectively-dosed ingredients, and no potentially harmful inactive ingredients like artificial dye or artificial sweetener.
We don’t recommend this supplement overall due to the green tea extract and vitamin and mineral additives, but we consider it an above-average weight loss supplement.
Does Nugenix Thermo Cause Side Effects?
Consumers are often curious if Nugenix Thermo is likely to cause side effects, which is a reasonable concern given that many weight loss supplements contain stimulant ingredients.
Nugenix Thermo has never been studied in a clinical trial that evaluated side effects, so there is no way to determine for sure, but based on the active ingredients we consider this supplement unlikely to cause any significant side effects.
Caffeine is stimulatory but the dose is relatively low in this supplement. Individuals sensitive to caffeine may want to avoid this supplement.
Other than caffeine, we cannot identify any ingredients we consider likely to cause any side effects at all.
Can Supplements Actually Promote Thermogenesis?
As detailed in the intro section of this article, Nugenix claims that this supplement promotes thermogenesis and increases body temperature. Whether or not this is truly possible is discussed in an informative podcast published by a YouTube channel called “Body Science.”
The video has achieved over 50,000 views at the time of writing this article, and features a guest who’s a PhD and a nutritionist:
Nugenix Thermo Customer Reviews
Nugenix Thermo is sold on Amazon which is a more objective resource for customer reviews than a brand’s website in our opinion. The product has been reviewed over 2,900 times and currently has an average review rating of 4 out of 5 stars.
The product receives a “C” grade on Fakespot, which is a software tool that detects potentially fake Amazon reviews. Fakespot’s “Adjusted Rating” is 2.5 out of 5 stars.
The top positive review from a verified purchaser is written by a user named “BK-One” who claims that the product has caused weight loss without any side effects:
“I am 5 lbs. lighter than I was over 48 hours ago. Maybe it's the product, maybe it's the change in the habits the past 2 days or maybe it's both. Either way, it's a win for me…The pills have not made me feel jitters or extra alert to where I can't sleep or anything. Basically, no side effects and usually by now, there are some.”
The top negative review from a verified purchaser comes from a user named “brent fong” who claims that the product caused uncomfortable side effects:
“I feel this product may be unsafe for some people. I took just one capsule and I got sick. I felt like I was overheating; was just hot all over. That may be what this product is supposed to do, when your metabolism speeds up. So, I can accept that aspect of the product. However, I also felt just slightly nauseous and had a slight headache. Furthermore, I just had a general feeling of discomfort. Perhaps my body is supposed to get used to these side effects and will no longer be problematic with continued use; but I just felt too uncomfortable to want to try to tough it out.”
Our Weight Loss Supplement Recommendations
There exist several weight loss supplements with significant clinical backing in terms of both efficacy and safety.
We recommend dietary fiber as a safe and effective weight loss supplement, especially when combined with caloric restriction.
A landmark medical study found that moderate caloric restriction (750 calories per day below baseline) combined with dietary fiber intake (a minimum of 20 grams per day) caused an average weight loss of 16.03 pounds over 6 months. That’s a potential pace of 32 pounds per year of weight loss in overweight individuals simply by adding fiber to a moderately-restricted-calorie diet.
The fiber supplement we recommend is SuperGut Fiber Mix. It contains a clean and effective formulation: a blend of three different types of unflavored dietary fiber and zero additive ingredients. It can be mixed into liquids or foods. Interested consumers can buy SuperGut fiber at this link.
We recommend using two fiber mixes per day, which provides 16 grams (g) of total fiber. Diet should provide the remaining fiber necessary to meet the 20 g minimum threshold.
Medium-chain triglyceride (MCT) oil is another dietary supplement which has been shown in clinical trials to cause weight loss.
MCT oil is quickly absorbed by the body and increases metabolic rate, which causes fat loss. A meta-study on MCT oil documented weight loss of 1.12 pounds over 10 weeks. This equates to a potential annualized weight loss of 5.84 pounds with MCT oil supplementation.
We recommend Bulletproof MCT Oil as our top MCT oil product, because it has a clean and effective formulation. The only ingredient is MCT oil derived from coconuts, and the product has no questionable additives. Interested consumers can buy Bulletproof MCT Oil at this link.
The effective dose range of MCT oil for weight loss (based on the medical review) is 1.7 g to 10 g per day. Bulletproof's MCT oil provides 14 g in one tablespoon, so around two-thirds of one tablespoon should be a maximally-effective dosage.