









⚡ Unlock Limitless Energy & Laser Focus — No Crash, Just Results!
Zantrex Black is a premium thermogenic weight loss supplement featuring 300mg caffeine and natural GLP-1 boosters to enhance metabolism, suppress appetite, and sustain clean energy without jitters. Clinically researched and free from gluten and dairy, it supports fat burning, mental clarity, and mood enhancement—perfect for driven professionals seeking an edge in productivity and weight management.










| ASIN | B01LTHLFM4 |
| Best Sellers Rank | #13,250 in Health & Household ( See Top 100 in Health & Household ) #24 in Fat Burner Supplements #3,865 in Sales & Deals |
| Customer Reviews | 4.1 4.1 out of 5 stars (2,163) |
| Date First Available | January 28, 2014 |
| Is Discontinued By Manufacturer | No |
| Item model number | 681168458027 |
| Manufacturer | Basic Research |
| Product Dimensions | 2 x 3 x 6 inches; 4 ounces |
M**E
Buy it… Its good!
I’m on Day 3 of using this product, and I have to say — I’ve sweated more during my workout than I ever have before. I’m not a natural sweater at all, so that actually felt good. The energy boost hit almost immediately and carried me through the next two days. I could also feel a noticeable shift in my mood within the first 24–48 hours. It wasn’t anything dramatic, but I found myself getting up and moving instead of just lying in bed until it was time for work or the gym. That alone told me something was working. One thing to note: the very first time I took it, I did not sleep for a full 24 hours. My body was just going. I followed other reviewers’ advice and started with one pill, which I recommend. Even with the energy surge, I didn’t experience jitters, shakiness, or that anxious “wired” feeling some supplements cause. But I definitely used the bathroom more — increased bowel movements are pretty common with stimulants and herbal thermogenics, so that didn’t surprise me. From a technical standpoint, Zantrex contains caffeine and other thermogenic compounds designed to increase metabolic rate, elevate core temperature, and stimulate the central nervous system. That’s likely why I sweated so much and felt that extended energy lift. These ingredients can also influence dopamine and norepinephrine levels, which may explain the slight mood enhancement and motivation boost I experienced. Overall, I would recommend this product. I genuinely like how it makes my body feel — energized, focused, and more active — and I appreciate that it didn’t come with unpleasant side effects. Also, buy it here. This price is at least $10–$15 cheaper than what I’ve seen in other stores.
X**L
Fight that 2:30 feeling for less than $0.60 a day!!
I used to drink a pot of coffee per day, before that I used to drink 2-3 energy drinks per day. These pills give me the same level of energy as the aforementioned activities without the jitters or feeling anxious. Just to be certain I wasn't experiencing placebo effects I went off the pills and switched back to coffee. Right away I was feeling nervous and jittery and my thought patterns seemed cloudy. After a day of this I drank plenty of water to flush my system and began taking these pills again. Not only do these pills give me a constant flow of energy without the crash, I have noticed an extreme level of focus. My thought patterns are clearer and my productivity has increased tremendously as opposed to using caffeine or sugar supplements. These pills are really affordable as well, usually they can be had at less than $0.30/pill, and I take 2 ($0.60) on an average day which is less than a cup of coffee or an energy drink. Even on a long day when I take 3 or 4 ($0.90 or $1.20) it is still economically superior to other supplements that claim to fight that "2:30 feeling". I have been using these pills for six months and I have noticed a huge improvement in my general functioning and thought processes. I am a 31 year old male in average shape and also a full-time student. After over a decade of being out of school these pills give me the focus and stamina I need to stay alert in class and complete my assignments. In my personal experience Coffee and Energy drinks have too many detrimental side effects when compared to these pills. I also used to take nitric oxide supplements to try and stay alert, but those made me aggressive and caused me to feel as if I was vibrating. These pills give me a smooth, yet intense, flow of energy and focus that lasts throughout the day. Just a warning: start out with one pill a day first to test your tolerance. Drink lots a water and DON'T drink coffee, tea, soda, or energy drinks. The added caffeine will alter your results. After determining if one pill is enough, add another pill either with the first serving or later in the day. Personally I take 2 in the morning when I first wake up, around 5:45am-6:15am, and take a third pill no later than 12pm if I need another kick. I drink on average 96-120oz of water per day, and I do not drink soda or sugary juices and teas during the day. If I take these pills too late in the day, then I usually wake up in the middle of the night fully alert and unable to fall asleep again. I wouldn't recommend taking these within 6-8 hours of your bed time. Having said all of that I would recommend these over anything for people who need all-day energy without the jitters. The mental clarity and focus are worth the price of admission alone. If you want to be your best self and be truly "limitless" then buy a bottle today!
D**E
Good product
These are awesome they help me for sure for myself they definitely curve my appetite.
S**R
Zantrex Black causes heart palpitations! Avoid!
Zantrex Black causes heart palpitations in people with HBP. Do not take it unless you want severe chest pains. Of course it's non-refundable and therefore a waste of money. It will curb your appetite if you take two a day so could be effective for younger people with low to normal blood pressure, but only if they drink decaf coffee or caffeine free soft drinks. Those 50+ should avoid this. Zantrex Blue has no stimulants but absolutely does not work as an appetite suppressant. The entire line of Zantrex products are overpriced hype.
V**A
Working so far. I think.
I only take 1 because two is too strong and it makes me super anxious. When first taking it it makes me nauseous and unsettles my stomach. Ginger helps with this. Then I have to eat or I get really weak, which I don’t know why that happens, maybe it’s making me burn energy. It makes me hot and sweaty too. While it gives me energy in the morning near the end of the day it makes my mind race and then I start getting anxious. While I don’t feel jittery it does make me super alert and when I try to nap to sleep it off I can’t sleep. I find that going on a walk helps. I think it’ll be a good pre workout but don’t take it alone if you are gonna do nothing all day. It made me pee a lot upon first taking it which I’m not sure if it’s a good or bad thing. Scale says the same weight but I do notice that my fat isn’t as firm as it used to be and I do look to be less bloated. It will probably be best to eat foods that keep you fuller for longer like protein. When I take this I feel like I am digesting food faster than normal. One good thing I noticed is that my back pain (gallbladder) feels less tense. I’m gonna just start taking it when I go to the gym, hopefully that works better.
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