Jump To:
Our Editorial Review
Customer Reviews

Zantrex Black

Zantrex Black

Overall Rating

2.6

54 Customer Reviews

Summary

Zantrex Black is a dietary supplement designed to boost energy and promote weight loss.

Write a Review

Zantrex Black Review: Does It Really Work?

By Anthony Dugarte, M.D., C.S.C.S

Updated on: Mar 4, 2020

Zantrex Black is proposed to enhance both energy and weight loss through a unique blend of ingredients.

Carrying extra weight can place you at a higher risk for chronic medical conditions like diabetes and cardiovascular disease. For many, losing weight is often easier said than done.

While diet and exercise are mainstays for any weight loss plan, Zantrex Black may be a beneficial addition to your regimen.

According to their website, by taking 2 softgels with water 150 minutes before breakfast, lunch, and dinner, you can expect to:

  • Quickly boost your energy
  • Rapidly lose weight loss
  • Control your appetite
  • Elevate your mood

These certainly sound like highly desirable effects, but are they possible?

In this article, we’ll help you determine if Zantrex Black is the safe and effective weight loss supplement you’ve been missing.

Zantrex Black Active Ingredients: Do They Work?

Zantrex Black’s ability to deliver these benefits is allegedly related to the unique blend of ingredients.

You can expect the following packed into every 2 softgels:

Niacin (30mg)

Proprietary Blend (1,160mg)

  • Yerba Mate
  • Guarana Extract
  • Caffeine
  • Damiana Extract
  • Green Tea Extract
  • Kola Seed Extract
  • Schizonepeta Extract
  • Black Pepper Extract
  • Rhodiola Crenulata Extract
  • Asian Ginseng Extract
  • Maca Extract
  • Cacao Extract
  • Black Tea Extract

While they do not provide the quantity of each specific ingredient in the blend, the secret behind the proposed effects is related to the caffeine content of this supplement – about 300mg per serving.

We’ll focus on the caffeine content to help you get a better understanding of what Zantrex Black can offer.

Can Caffeine Content Deliver the Proposed Effects?

In addition to including caffeine itself, Zantrex Black offers 5 additional ingredients that contain this stimulant: yerba mate, guarana, green tea extract, kola seed extract, and cacao extract.

The caffeine offered in each of these ingredients amounts to about 300mg in every 2-softgel serving. For your reference, this is about 3x the amount of caffeine included in an 8oz cup of coffee.

Thus, you’d take in 900mg of caffeine daily when Zantrex Black is taken as directed.

Caffeine has several reported benefits like boosting memory, increasing alertness, enhancing athletic performance, and even reducing the risk for some cancers.

The caffeine-containing ingredients in Zantrex Black are intended to boost your energy and help you lose weight.

The effects of this stimulant have been widely studied.

A recent review of 34 studies detailed some of the immediate benefits that caffeine has related to athletic performance. Doses ranging from 3 to 6mg/kg body weight improved vertical jump, sprinting speed, and performance during agility tests.

In healthy subjects, 3mg/kg of caffeine given before physical activity increased the number of sweat glands and oxidized more fat when compared to those that didn’t receive caffeine. These effects were smaller in obese women, however.

This study found weight loss was more effectively maintained in those that consumed more caffeine.

A recent review of 13 randomized trials concluded that caffeine intake might promote reductions in weight, BMI, and body fat.

The proposed energy and weight loss effects seem to be supported at doses comparable to those found in Zantrex Black.

You should always start with a more comprehensive weight loss plan that includes diet and exercise. The use of a dietary supplement alone would not offer all of the available benefits of implementing healthy lifestyle changes.

Is Zantrex Black Safe?

While many of these ingredients have been safely studied individually, their combination may increase your risk for side effects and toxicity.

This is best illustrated in a 2012 case report. A 38-year-old woman taking Zantrex-3 (200mg of caffeine per serving) for 2 months experienced blurred vision and seizures. These symptoms were resolved after discontinuing use.

Though this is just one case, use can be risky.

The FDA states that rapidly consuming 1,200mg of caffeine can cause seizures. While you’ll fall under this number when taking Zantrex Black as directed, the addition to your typical coffee, soda, or tea intake can put you in an unsafe range.

Also, 400mg daily is considered the safest use of caffeine – daily Zantrex Black use alone can more than double this number.

Consuming too much caffeine often results in restlessness, nausea, agitation, rapid heart rate, and unsafe increases in blood pressure.

For these reasons, it’s best to avoid Zantrex Black or similar stimulant-containing supplements. Always ask a physician before use and never consume them in ways other than what is recommended.

Cost and Where to Buy

You can pick up 84 softgels of Zantrex Black directly from their website or from Amazon for $39.99 or $19.87, respectively.

When used as directed, one bottle will last you 14 days. You’ll have to double the pricing to get through an entire month.

This product ships free from both Zantrex and Amazon.

Zantrex also offers a no-hassle guarantee that is not constrained by a time limit. According to their site, simply contact Customer Service Hotline at 1-800-898-5153 and ask for a Return Merchandise Authorization (RMA) number.

Place the RMA on the outside of your package and return to Returns Dept. 5742 Harold Gatty Drive, Salt Lake City, UT 84116.

Are There Any Alternatives?

There are a number of stimulant-containing supplements available. A simple internet search will reveal many options.

Trans4orm from Evlution Nutrition offers a 2-month supply of this supplement for $29.99 or 2 for $40 at bodybuilding.com. Each capsule provides a blend of B vitamins, extracts, and caffeine-containing ingredients.

Hydroxycut Hardcore Elite from Muscletech is another stimulant-containing dietary supplement. It similarly offers multiple forms of caffeine. At GNC, it is $34.99 for a 25 day supply.

Again, as these products may be harmful, diet and physical activity are a better first step for weight loss.

The Bottom Line

The many benefits of caffeine have been extensively studied. There is ample support for the energy-boosting and weight-loss promoting effects alleged by Zantrex Black.

Reviews for Zantrex Black are fair.

More than 500 users rate it 3.9-stars at Amazon. Happy customers report rapid weight loss, sometimes even with taking much less than the recommended dosing. Those unsatisfied with the supplement report side effects like rapid heart rate and stomach pain.

Nonetheless, stimulant-containing supplements can be dangerous. Zantrex Black, when used as directed, more than doubles the safest daily limit for caffeine. Adding other sources of caffeine (coffee, soda, etc.) can place you at even greater risk.

Implementing healthy lifestyle changes should be your first step in your weight loss journey. If you are interested in Zantrex Black or similar products, do not use them without speaking to your doctor.

Customer Reviews

2.6 Stars out of 54 Reviews
5 Star:27% 4 Star:9% 3 Star:5% 2 Star:11% 1 Star:46%
41% Recommend This Company
Start your review of Zantrex Black:
Sort Reviews By

Posted on Jul 9, 2015

Horrible, please choose a less harmful dietary supplement

By Catherine , New York

Please do not take this product. They are not clear on the symptoms and mine were very severe. Obviously diet pills make you shake but the way it made me shake was uncontrollable. The very time I took these pills, my skin began feeling tingly and red. I went to the ER thinking it was an allergic reaction but the doctor said this specific diet pill has an insane amount of caffeine in it that my body couldn't handle and my heart rate and blood pressure were through the roof.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 5 People Have Voted

Posted on Jul 9, 2015

Bad reaction

By Chris , Orlando, FL

I took this product twice and it looked like I had the hives and my skin got all bumpy, red, and itched terrible. I also felt very flushed and hot. I think maybe it's the niacin in it. These products don't effect everyone the same but there is no way I'd take them again. I'm hoping I can get a refund or store credit for them.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 12 People Have Voted

Posted on Jul 31, 2015

Never Again.

By Sabrina , New York

I only took one pill, thank goodness. Within five minutes my stomach ached and I broke out with a severe rash all over my whole body. I've taken every diet pill known to man including both blue and red Zantrex and have never had any allergic reactions. I would never recommend this product and I'm returning it to the store.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 16 People Have Voted

Posted on Feb 18, 2015

Bad experience

By Linda Barber , Orlando fl

I have always struggled with weight and always believed that this "next one" is going to work. To say the least, within 2 days my face was red and blotchy and my kidneys were in a lot of pain, so much that I am seeing a doctor this morning. I drink lots of water and don't understand what this side effect is. Never have I had such pain in the stomach area and kidneys.

Will keep you updated but would not recommend this product.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 4 People Have Voted

Posted on Mar 21, 2015

Beware!

By Jason , Branson, Mo

I just took the recommended dosage and I am having a severe allergic reaction. I'm on my way to get an antihistamine. My skin is red all over, itching and on fire. I'm developing hives, I have bronchitis which my breathing ironically has improved so no worries on anaphylaxis. I am a medic so I'm not worried, but it is very uncomfortable and came as a shock as I am not allergic to anything. Take caution if you use this and DO NOT take more than it says. This could've been worse.

Zantrex Black is no good.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 6 People Have Voted

Posted on Apr 8, 2015

Watch out

By Molly , Pittsburgh, PA

I took two of them and I wanted 15 minutes. I read the directions but I got really hot on my face and neck. I also got really red my arms and legs broke out into a rash. It all went away after an hour.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 3 People Have Voted

Posted on Jul 21, 2015

Excruciating stomach cramps

By Tammi ,

I purchased a bottle this morning. I took the recommended dosage of two capsules and within 15 minutes I got a tingling feeling. I didn't think anything of it. I ate my lunch but within five minutes my stomach started hurting. My face felt flush. I felt like my insides were on fire. The abdominal pain was too much to handle. I took a cool shower to try and relieve the hotness on my skin. After a few hours, all symptoms subsided. I ate dinner six hours later and began to feel flushed all over again. I took Zantrex-3 a few months ago but achieved no results so I thought I would try something a little stronger but this is too much. I will be returning this first thing in the morning for a refund.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 14 People Have Voted

Posted on Jul 22, 2015

Waste of money

By Tigris Clemons , Dallas, TX

I've recently purchased two bottles of Zantrex Black and I seen no results! I am a 5-year bodybuilder and was taking them to help me shred. Didn't help. Strict diet, hardcore workout plan in place. I felt a little energized, that's about it. Save your money, it's worthless.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 10 People Have Voted

Posted on Nov 20, 2015

Returning the product

By Julianne , Feeding HIlls, MA

Got Zantrex Black yesterday, took only one pill this morning, within 20 minutes I felt stomach pain and a terrible pressure in my head, and I was hot and flush in my face. Luckily I can take it back. Just be careful, looks like there are a lot of terrible reactions you can get from it.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 19 People Have Voted

Posted on Dec 1, 2015

Horrible

By Ashley ,

10 minutes after taking I became extremely hot and almost passed out. Then came the feeling of needing to vomit. It also effected my airways and everything became tight and hard to breathe. After that passed I just feel jittery.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 20 People Have Voted

Posted on Mar 28, 2017

Ended at the ER

By Jamie, New York, NY, Verified Reviewer

I drank it this morning since I had a lot of errands to do with my husband. First stop was a clinic, thank God for that. On my way there I felt hot and cold, then I had to pee and vomit. Got to the clinic and vomited, saw the nurse and I began to feel chest pains, and became confused, wanting to vomit my stomach out. I urinated and did number 2.

I began having chest pains, I was about to pass out, felt like having a heat attack, blood pressure was sky high, was losing consciousness, forgot to speak. The worst weight loss pill ever. PA had to call an ambulance, ended up in the ER, with all sorts of meds and IV. I did not do any of my errands.

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 16 People Have Voted
Showing 1-11 of 54

Our Promise to You

In order to safeguard you and ensure helpfulness and relevance, our compliance team manually assess every customer review before it goes live.

We have a zero-tolerance policy for fake reviews, and companies cannot control or alter any reviews at any time.