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Zantrex Review - 19 Things You Need to Know

Zantrex is a supplement that targets fat deposits with a formula full of natural ingredients and stimulants. The company’s claim that it offers “546% more weight loss” than the ephedra product is one we could not ignore. Even though some of its ingredients are promising, the use of the same ingredients as a thousand other products doesn’t bode well.

When our crew examined Zantrex’s ingredients in detail, they also found a number of users complaining about adverse side effects from the high stimulant content. We had to find out if this fat burner is both safe and effective, so we examined it from top to bottom. We bring you a summary of what we found out here.

Zantrex can be purchased through their Official Site.

Zantrex Readers: Noom is offering our readers a risk-free trial, for a limited time. Click here for more information!

What is Zantrex?

Zantrex is an over-the-counter fat burner supplement that helps heighten energy levels and encourage rapid weight loss. This unique formula combines various herbs and stimulants but is free of the banned substance, ephedrine.

Losing weight with diet and exercise alone can often be quite challenging. Zantrex is intended to help amplify your results to see more substantial weight reduction in a shorter period.

Zantrex Competitors


How Did Zantrex Start?

Zantrex weight loss pills have been on the market since at least 2008. This supplement is manufactured by Zoller Laboratories, a brand that has been around since 2002. This product was created as a natural alternative to ephedra-based diet pills and is suitable for both women and men trying to shed unwanted pounds, and this is what some of the research has to say about this supplement’s ingredients:

Zantrex Contact Information

Here is the company’s contact info:

Zoller Laboratories
5742 West Harold Gatty Drive
Salt Lake City, UT 84116
Phone: 1-800-392-3689

Zantrex Products

This depends on what your health and fitness goals are. There are five different Zantrex supplements available. Each product offers some different benefits. These products include the following:

  • Zantrex-3 (blue bottle)
  • Zantrex-3 High Energy Fat Burner (red bottle)
  • Zantrex Black (black bottle)
  • Zantrex SkinnyStix (individual powder sticks)
  • Zantrex Fat Burning Protein powder (creamy vanilla bean or triple chocolate fudge)

The original Zantrex-3 formula is mainly for energy and weight loss. In contrast, the High Energy Fat Burner option also contains a “clinically-tested thermogenic fat burner” that is said to help with lipolysis (breakdown of fat cells) and prevent phosphodiesterase activity.

As for Zantrex Black, this is a rapid-release formula in the form of a liquid softgel. It is claimed to take effect more quickly than the others, so you see even faster results.

SkinnyStix Berry Fusion is a powder stick supplement. It is added to 16 ounces of water and consumed as a drink. Zantrex Fat Burning Protein is also a powder formula combined with 8 ounces of water (2 scoops of powder per serving).

It provides 20 grams of protein to boost energy levels and control food cravings while also assisting by elevating mood, increasing metabolism, and accelerating weight loss.


Zantrex Claims

Zantrex-3 is claimed to help you drop up to 546% more weight than the “leading ephedra-based diet product.” Furthermore, this supplement is touted as being way beyond anything available on the market today. Aside from the rapid fat loss, Zantrex pills are supposed to provide extreme energy.


Zantrex Ingredients

Zantrex ingredients include:

Citrus Fruit Extract

It provides flavonoids, which are polyphenolic compounds that help combat harmful free radicals, according to a study in Food Chemistry.

Coffee Bean Extract

An unroasted coffee bean extract that contains chlorogenic acid; shown to help with weight loss by reducing or slowing down the absorption of carbohydrates, says the International Journal of Molecular Science.

Guarana Fruit Extract

Guarana is a natural source of caffeine and provides additional stimulation over caffeine alone, according to PLOS One.

Fennel Seed Powder

Fennel contains vitamins and minerals and is often used in traditional medicine. Research shows fennel has antioxidant effects, a study in the Journal of Medicinal Food.

Kola Seed Extract

Kola is a plant from the cocoa family and grown in South America, Africa, and Central America. It contains caffeine, and has been shown to reduce hunger and boost energy, says MedlinePlus.

Green Tea Leaf Extract

Green tea is unfermented and provides catechins (including EGCG), which are polyphenols (antioxidants).

Kelp Powder

Kelp is a seaweed found in cold ocean regions. It provides beneficial minerals and is a source of iodine.

Alpha Lipoic Acid

Alpha-lipoic acid is an antioxidant helping to fight free radical damage, says the International Journal of Biomedical Science. It can be found in spinach, Brussels sprouts, broccoli, brewer’s yeast, peas, and tomatoes.


Zantrex Benefits and Results

Okay, let’s take a closer look at all of the Zantrex benefits. Here we go:

  • Extreme energy
  • Rapid weight loss
  • No ephedrine
  • High-quality ingredients
  • Increased thermogenesis
  • Improved mood
  • Better focus/alertness
  • Appetite control
  • Fast-acting
  • Better stamina

Does Zantrex Work?

This is the big question. Will Zantrex live up to the claims? There is no clinical research or scientific evidence presented on the main website supporting Zantrex as a whole. There’s research into Zantrex ingredients.

Caffeine is an active ingredient in Zantrex. It comes from tea leaves, kola nuts, coffee beans, yerba mate leaf, guarana, and cacao beans. Caffeine can help suppress appetite, improve alertness, enhance brain function, stimulate thermogenesis, and aid with weight loss, according to Medical News Today.

According to the journal Medicine and Science in Sports and Exercise, “caffeine, when combined with aerobic exercise, can help reduce fat-pad weight and fat cell size.”

Zantrex also contains green tea extract, which has demonstrated positive effects on weight reduction and weight maintenance. A 2005 study from the International Journal of Obesity revealed that the catechins or an epigallocatechin gallate and caffeine mixture in green tea positively affected weight loss.

Zantrex weight Loss

Details on Zantrex and Weight Loss

The primary purpose of Zantrex is to help you shed excess fat and reach your weight-loss goals. Our research team focused on two main ingredients supported by research.

Zantrex also offers caffeine from sources such as kola nut, guarana, and yerba mate. Zantrex-3 pills provide about 300 milligrams per serving (includes caffeine-like stimulants). According to the journal Obesity Research, “High caffeine intake was associated with weight loss.”

Coffee bean extract is another ingredient supported by some research. According to the journal PLoS One, “Intake of 60% coffee extract resulted in the reduction of body mass elevations in the high-fat diet-fed groups.”

How to Take Zantrex

Zantrex directions include:

Zantrex-3 High Energy Fat Burner

You’ll take two capsules each morning and two more capsules with your main meal of the day. Always take with a full glass of water. Never exceed four capsules per day. It is best to take Zantrex with a sensible diet and exercise program.

Zantrex Blue

Take two capsules, 15 minutes before your main meals, and a full glass of water. For an energy boost, you can take 1-2 capsules as needed. Do not exceed six capsules in 24 hours.

Zantrex Black

You’ll take Zantrex Black 2 softgels 15 minutes before your main meals. You can take 1-2 softgels as needed for a substantial energy boost. Do not exceed six softgels within 24 hours.

Side Effects

Potential Zantrex Side Effects

While there are no specific side effects from Zantrex, some may notice side effects from Zantrex ingredients, including:

  • Nausea
  • Headache
  • Diarrhea
  • Fast heartbeat
  • Jitteriness
  • Upset stomach
  • Mood swings
  • Difficulty sleeping
  • Irritability

Zantrex Product Warnings

There are some Zantrex warnings on their packaging to be aware of, and they are as follows:

  • Use Zantrex only as directed.
  • Keep Zantrex out of reach of children.
  • If the inner safety seal is broken or missing, do not use it.
  • Zantrex is not intended for individuals under the age of 18 years.
  • If you are pregnant or nursing a child, do not use Zantrex.
  • People who are sensitive to niacin (nicotinic acid) might experience flushing of the skin.
  • Zantrex contains a very potent xanthine(stimulants) mixture (200-300mg per serving).
  • Reduce the use of xanthine-containing supplements, beverages, and/or foods while taking this product.
  • If you are already on medication, be sure to speak with your doctor before using Zantrex.
  • If you have a pre-existing medical condition, you need to consult your doctor before using Zantrex.
  • People who are sensitive to stimulants should consult a doctor before taking Zantrex.

Any Zantrex Lawsuits?

There are no current lawsuits against Zantrex.

Where Can You Buy Zantrex?

You can purchase all the Zantrex products directly from the official website. Other Zantrex dealers and websites include Walmart, Amazon, Walgreens, Lucky Vitamin, iHerb.com, NaturalHealthSupply.com, Newegg.com, and eBay.

The Zantrex return policy states a no-nonsense guarantee covers customers. If you are unsatisfied with the product, you can return it within 30 days for a hassle-free refund. You’ll call 1-800-392-3689 (Monday-Friday 7:00 AM-6:00 PM MST and Saturday 8:00 AM-4:00 PM MST), or you can use their “Contact Us” page to send an email. You will receive an RMA number, and then you’ll need to send your return here:

ATTN: Returns Dept.

5742 Harold Gatty Drive

Salt Lake City, UT 84116


How Much Does Zantrex Cost?

As for the Zantrex price, here is a rundown of the price options that are listed on the main website. Note that each bottle will last for 14 days.

  • Zantrex Blue: $39.99
  • Zantrex Black: $39.99
  • Zantrex-3 High Energy: $39.99
  • Zantrex SkinnyStix: $24.99
  • Zantrex Fat Burning Protein: $29.99

Zantrex Pros

  • Some Zantrex ingredients are supported by research
  • Diet and exercise are encouraged
  • Readily available
  • 30-day refund guarantee

Zantrex Cons

  • Zantrex contains stimulants

Zantrex Lawsuits

In 2013, a class-action lawsuit was filed against Zantrex for false claims. According to the plaintiffs, the company claimed the supplement was clinically proven, but that’s not the case. Zantrex tried to settle the case out of court for $400, but the plaintiffs denied the payment. After the denial, the defendants attempted to have the case dismissed because the settlement offer was rejected. The court refused to dismiss the case. The last update on Top Class Actions was in 2016.

Zantrex Alternatives

You will not have any difficulty finding alternatives to Zantrex diet pills. There are plenty of weight-loss supplements on the market with comparable ingredients. Some of which contain much less caffeine and stimulants/xanthines.

While you should consider products that contain ingredients backed by solid science and clinical research, it is also important to be aware of any potential side effects the product can cause. Reaching your weight-loss goal is important, but it is best to do it safely.

What Users Are Saying

“I lost 20 pounds in two months. They give you long life balanced energy. I took them working a night shift. I worked 11 hour nights for two months and never ran out of energy on 6 hour sleep a day. They did not give me jitters, although I did get a bit irritable. If you have heart problems stay away, but I’m 63 and had zero issues. They were great.”

“Took one pill before my meal and it has terrible side effects! Made me very nauseous, terrible migraines, and the worst jitters I have ever felt!”

“I’ve been using this product for years. Provides a boost of energy similar to popular energy drinks but without the high sugar content.”

Bottom Line

The Bottom Line on Zantrex

Now the moment you’ve been waiting for: our bottom line on Zantrex. Well, we like that this diet pill contains some natural herbs and that it’s sold with a satisfaction guarantee. On the downside, we have some doubts because it’s not actually backed by any clinical studies or research. Furthermore, we’re concerned about customer complaints regarding side effects.

If you’d like to drop more weight, then we encourage you to choose a program that is backed by solid science, is easy to use anywhere and comes with great customer service.

Among the best products we’ve seen this year is one called Noom. This program has been shown in documented clinical research to help you lose weight and keep it off. Moreover, customer feedback around the web shows people are seeing significant results.

The makers of Noom are so satisfied with their product they’re offering a free trial offer, which is a good sign.

Learn More About Noom »
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What are the side effects of Zantrex?

Some customers complained of side effects while using Zantrex, including nausea, dizziness, headaches, redness, and stomach pains.

What are the ingredients of Zantrex?

Zantrex ingredients include yerba mate leaf extract, guarana seed extract, trimethylxanthine, damiana leaf extract, green tea leaf extract, kola seed extract, schizonepeta flower extract, black pepper fruit extract, rhodiola crenulata root extract, Asian ginseng root extract, maca root extract, cacao seed extract, and black tea extract.

How much does Zantrex cost?

For a bottle of 84 capsules, Zantrex costs $19.99.

How should I take Zantrex?

Two Zantrex capsules should be taken with a full glass of water before your main meals.

What is the maximum amount of Zantrex I can take in a day?

The manufacturers strongly suggest that you do not take more than six Zantrex capsules in a 24-hour period.

Where can I buy Zantrex?

Zantrex can be purchased using their Official Site.

Can I still consume caffeine while using Zantrex?

Although you can still consume caffeine, Zantrex makers suggest limiting intake due to the large amount already found in the supplement.

What I the different between the red and blue Zantrex bottle?

The blue Zantrex bottle is called Zantrex Blue while the red bottle is named Zantrex-3 High Energy Fat Burner. The latter is more expensive and contains more caffeine. There’s a third variety called Zantrex Black in a black bottle.

Does Zantrex come with a guarantee?

Zantrex offers a 30 day money back guarantee with valid proof of purchase.

Does Zantrex work?

Zantrex offers lots of clinical evidence of it working much better than Hydroxycut, Lipozene, and “America’s #1 Selling Ephedra-Based Diet Pill”. However, if you read the fine print, the studies for Zantrex were done on the primary ingredient compared to the other products with one of their ingredients. Additionally, Zantrex states at the bottom of the study that the main ingredient in Hydroxycut basically causes the same rate of weight loss as the main ingredient in theirs.

19 Zantrex Reviews

  • Gayle

    I’ve been taking it for 2 weeks. I don’t know that it has helped me lose weight, but I have been suffering severe pain for over a year.The morning after I started Zantrex 3(red bottle) I had NO PAIN! If I never lose weight I don’t care. I haven’t found anything that did this for me so I will continue to take it for that reason alone. If I lose weight its an added bonus. Also, I have had no side effects at all.

    • Mary Clay

      Congratulations!!! 👏👏👏

  • Will post in couple of weeks !
    Taylor (Verified Purchase)

    I too was a little afraid to take zantrex, but I can truly say that it didn’t make me nauseous at all, no headaches,although; I did take two ibuprofen so that Iwouldn’t, the first two pills I did fill a little anxious, but I’m positive it’s due to the fact that I don’t do coffee or soda. I’m really waiting to see how much weight I’ll lose, I feel like I’ve lost at least a couple of lbs already. I wait with bated breathe. I’ll post again in a couple of weeks to let everyone know how it goes. Oh I’m a water fanatic so I’m sure it helps with nausea and eat ,just smaller potions. Good luck.

  • Don't use
    Rebecca Ann Wozniak

    Do not use this….after a week I am going to my doctor today….I have been burping for three days along with gas…just don’t feel that well……No weight loss…at all. feel so bloated…

  • I love zantrex
    Ke'Mona (Verified Purchase)

    I love zantrex3 blue bottle I’ve been taking it for 2mnths I’ve went frm a size 18 to a nice 14 (I excersize an eat way different) also when I take it I hav lots of energy! ! I hav like 4 pills left… sad I hav 2 buy sum more I recomend it…..

    • Mary Clay

      Finally someone post a positive response and a testimony towards Zantrex. I just started today so I do not have a testimony right now. I am excited to see the weight fall off my body with the help of exercising and eating right.
      Thank You and Congratulations!!! 👏👏👏
      Mary Clay

  • What steps do I need to take not to get sick with Zantrex?

    Hello all! I am newly 18 years old I’m 5’7 and sadly 193lbs. I want to get back to my old weight at 145 lbs. I hate that I’ve gained so much weight over the years. From eight grade to senior year in high school. I just bought the red bottle and I’m pretty nervous about it because of seeing everyone’s scary stories and pissing and moaning about it. Now what steps do I need to take NOt to get sick because that’s my biggest fear. Thank you ll and I hope to hear from someone soon 🙂

    • Mary Clay


  • I love this product.
    hoda (Verified Purchase)

    I love it .I just had my baby six month ago.day was my first day .I was not sitting down at all .I was moving a lot .my goal want to be how I was 110. Now I’m 140 .I know its a lot but I hope ill lose it all….

  • Just started will update later.
    Bernadette (Verified Purchase)

    After reading all of the reviews on various websites about Zantrex, it all sounded scary. I was hesitant to try it because it would be my first time using them. I took them and never felt the horrible side effects people talked about, although it made me sleepy and eat more than I should have. I don’t see a difference in weight, pounds lost. I took two fifteen to half an hour before breakfast and one midafternoon with a late lunch. I already do the Insanity workout and walk 3-5 miles a day, I needed that extra oomph to lose pounds faster but Zantrex doesn’t do anything for me. I’ll finish up the bottle I purchased and just stick to my Insanity workout and walks.

    • erick

      Im taking zantrex3 (red bottle) and doing insanity and also keeping track on how many calories im eating and so far I have lost 4 pounds in 4days. Thats 1 pound a day and the energy it gives me is amazing. I have not felt any of the side effects that people on here have been talking about. I love this product. You have made me one happy ass customer!

      • Mary Clay

        Congratulations to you!!! 👏👏👏

  • Works for me
    amanda (Verified Purchase)

    I just started taking this. I believe its been 2 days now. For me it already works. I’ve already lost weight. Not sure if that’s due to the excessive pooping OR the lack of appetite though.

  • Experiencing side effects
    Sue (Verified Purchase)

    Well it has wiped out my hunger pangs tbh the thought of putting food in my mouth makes me feel I’ll. I’ve been on it 3 days and I feel dreadful so nauseous and a headache from the pills I don’t think it’s worth the side effects I’ve spent all the 3rd day in bed and I’ve only had 2 tablets this morning I couldn’t face having anymore and after eating I feel shocking.

  • It works but don't take at night
    Airreal (Verified Purchase)

    I took Zantrex and i lost 81 lbs it most definitely works and it will give you a energy boost while curving your appetite. So dont take Zantrex before bed or you will be up all night

    • Mary Clay

      Congratulations!!! 👏👏👏

  • I completly wasted my money
    shane (Verified Purchase)

    I am currently taking Zantrex 3 and I am just trying to finish the bottle so I don’t feel like I completly wasted my money! No energy boost, no appetite deterrant at all. I would never recommend this to anyone!

    • Donna

      I have the blue bottle and I to feel like I’ve wasted my money and feel sick no matter if I take 1 or 2 with it without food , I feel horrible.. U don’t want to waste them I just don’t want them , free to anyone who wants them… I will not recommend this product to anyone either..

  • Avoid excess caffeine consumption
    maggie (Verified Purchase)

    I have been taking this product on and off for 6 years. Maybe its because I know to drink a lot of water and limit my caffeine intake that it works so well. I only use it for 3 months at a time before a big event or after the holiday eating frenzy. I lose on average 3lbs a week while taking one pill three times a day. It cuts your appetite down to nill and I find myself stuffed after eating a small salad. Read the directions carefully and avoid excess caffeine consumption. IMO anyone drinking caffeine while taking any diet pill is a dope. Be smart, read labels, eat well, and drink LOTS of water.