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Zantrex Red Review (2023 Updated) Legit or Just a Scam?

Isaac Robertson
Published by Isaac Robertson | Co-Founder & Chief Editor
Fact checked by Donald Christman, BHSc FACT CHECKED
Last updated: April 24, 2023
We personally test every product featured in our reviews and guides. By ordering products anonymously and getting a group of independent testers, we are able to get first-hand experience and provide data-driven recommendations. Learn more.

You’ve tried intermittent fasting, keto diet, strict workout, and many other approaches, but you still need the support of a fat burner in losing weight?

And then you’ve heard that Zantrex can increase fat loss rapidly and safely like some banned ephedra-based diet pills used to?

To determine whether this fat burner lives up to the claims, our expert team thoroughly researched each ingredient, how the formula works, its usage, benefits, shortfalls, possible side effects, and previous genuine customer experiences.

Upon reading our detailed Zantrex review, you’ll hopefully be able to decide whether this product would be the right choice for you.

So, let’s get straight to the point.

What Is Zantrex and How It Works to Help With Weight Loss?

Close up image of Zantrex

Zantrex is an over-the-counter fat burner formula that aims to assist in body sculpting and weight loss. It heavily relies on stimulants and may help control appetite, trigger thermogenesis, boost metabolism, improve focus, burn fat, and enhance endurance.

Zantrex is also said to initiate lipolysis and help the body release fat cells more efficiently.


Zantrex supplement product


Overall Score 4.0
  • Claimed to contain all-natural ingredients
  • Free from any banned substance like Ephedrine
  • Promises to boost your energy levels massively, help stimulate lipolysis, enhance fat loss, control food cravings, and improve focus
  • Widely available in online and retail stores
  • Zantrex formula heavily relies on caffeine and other caffeine-like stimulants
  • Non-transparent ingredient doses hidden behind a proprietary blend
  • Contains allergens and gelatine (not suitable for vegans or vegetarians)

Zantrex Ingredients

Supplement Facts of Zantrex

Citrus Fruit Extract

This active fat burner compound can help your body break down the stored fat for energy more efficiently and feel fuller for longer, enabling you to eat less and enhancing fat loss.

The citrus fruit extract is also rich in flavonoids, which help fight harmful free radicals and bring various other health benefits.

Guarana Fruit Extract

This active energy compound with strong stimulative effects helps increase your energy levels and metabolic rate, improving your focus, keeping you alert, helping overcome fatigue, and burning calories critical for losing weight.

Besides caffeine and other stimulants, Guarana extract contains alkaloids theobromine and theophylline that may suppress appetite, too.

Coffee Bean Extract

Coffee beans extract is another natural source of caffeine commonly found in fat burners, which works as an energy booster.

Moreover, coffee bean extract also contains chlorogenic acid studies have shown to reduce the absorption of carbohydrates, promoting more rapid weight loss [1].

Kola Seed Extract

Kola is a plant from the cocoa family usually grown in Africa, Central and South America.

Kola seed extract contains large amounts of caffeine typically used in fat burners to assist in reducing hunger, providing an energy kick and mental alertness [2].

It is also believed to stimulate the production of gastric acid, improving digestion and even fat oxidation.

fresh green tea in a cup

Green Tea Leaf Extract

Green tea extract, a common ingredient in many supplements for losing weight, is rich in Epigallocatechin Gallate (EGCG) and other catechins (polyphenols with strong antioxidative properties).

Besides various health benefits, studies say that these substances, in combination with caffeine and green tea extract, may contribute to weight loss [3].

Paired with the guarana extract and other natural ingredients blended in this formula, the unfermented green tea leaf may also work as an appetite suppressant and fat burner stimulating thermogenesis.

It may assist in shedding excess fat by raising your body temperature and providing sufficient energy levels, increasing your body’s efficiency at exercising harder, and burning additional calories even at rest.

Kelp Powder

Kelp is a seaweed that grows on cold ocean floors and provides Iodine and many other beneficial minerals and vitamins that may support your vigorous weight loss exercise regime and enhance post-workout body healing.

This natural fiber might also slow down body fat absorption.

Fennel Seed Powder

Fennel seeds also contain plenty of minerals and vitamins with powerful antioxidant effects necessary to help replenish the lost energy after physical and mental stress [4] [5].

Besides reducing oxidative stress, anti-inflammatory, anti-cancer properties, and mental and heart health benefits, fennel essential oil anethole might help suppress appetite, but the scientific evidence is conflicting.

Alpha Lipoic Acid

Another type of naturally occurring compounds this formula contains is Alpha Lipoic Acid. It’s rich in antioxidants critical for maintaining overall health, especially fighting free radical damage and enhancing the conversion of carbs into energy [6].

This compound is commonly found in brewer’s yeast, spinach, broccoli, peas, Brussels sprouts, tomatoes, and many other veggies.

Zantrex Shortfalls: Possible Side Effects

woman in a headache

Some customers have complained of side effects from Zantrex ingredients they noticed while using these weight loss pills.

Potential side effects you can expect the stimulants in Zantrex pills to cause may include

headaches, nausea, abdominal discomfort and pain, jitteriness, rapid heartbeat, irritability, and difficulty sleeping.

This fat burner isn’t suitable for minors, pregnant or breastfeeding women, vegans, or vegetarians.

My Experience With Zantrex

While testing the Zantrex weight loss pill, besides a sudden energy rush, I felt restless and had insomnia (due to its harsh stimulative effect).

My appetite seemed slightly reduced, but I didn’t lose weight, probably because I didn’t use it long enough.

Where Can You Buy Zantrex Weight Loss Supplements?

Buying Zantrex Weight Loss online

You can buy Zantrex weight loss supplements from various retailers nationwide or online. However, to ensure that you get an authentic product for the best price, we recommend buying from the manufacturer’s official website.

In such a case, the Zantrex fat burner comes with a 30-day money-back guarantee.

If you’re not satisfied with the weight loss supplement product, just send a valid proof of purchase, and the manufacturer promises you a prompt, hassle-free refund (excluding shipping and handling costs).


Zantrex supplement product


Overall Score 4.0

How to Use Zantrex Red

The recommended daily dose is four pills, with two capsules each morning and two more with your main meals.

Whenever you take these pills, drink a lot of water.

Stick to the daily dose recommendation to achieve the best results. At the same time, have a good exercise program and sensible diet to go along with this supplement.

This product is not suitable for people under 18 years of age. After all, it contains around 200 mg of caffeine and other stimulants per serving.

If you're sensitive to these substances, ask your doctor before taking this fat burning supplement.

Zantrex Customer Reviews

asian female placing a pill in her mouth and hand view of a person using a laptop

Our unbiased Zantrex review would be incomplete if we didn’t check many other online user reviews before making a final judgment on the effectiveness and safety of this fat-burning product.

In short, the experiences of Zantrex buyers are rather mixed, with seemingly more disappointed than satisfied customers.

Some consumers stated that it helped them diminish hunger cravings and gave them an almost immediate energy boost, whereas others said they didn’t experience rapid weight loss despite feeling more energized.

Some people consider it a waste of money and just another pill making false promises, claiming they didn’t feel the product made any difference, positive or negative.

Some users even claimed that this supplement didn’t reduce their appetite and help them lose weight but made them gain weight.

There were also consumers who lost a few pounds but complained of experiencing headaches, nausea, dizziness, and some harsh adverse reactions.

Fat Burner Alternatives

We tested it against three popular fat-burning supplements to get a complete picture of Zantrex. Here’s what we learned.


PhenQ is a fat burner that promises to target every aspect of weight loss. One significant advantage PhenQ has over Zantrex is its transparent label, so you will see that PhenQ contains effective doses of caffeine, capsimax, and L-carnitine.

I spoke with our dietitians about nopal and chromium, who stated that those ingredients have appetite-suppressant benefits. Our test group reported significantly reduced snacking and cravings and showed improved body composition measurement during the several weeks of testing.

As a fitness trainer, I would trust PhenQ to support my and my client’s weight loss goals with its all-natural, scientifically-tested formula and transparent label.

You will pay more for PhenQ, but what you get is worth the price. You’ll get a fully transparent label and a highly-effective fat burner, as shown by our testing and countless online reviews that we researched.

You can offset the price by ordering directly front the official website and taking advantage of incentives there.


Where Zantrex focuses solely on fat burning, PrimeShred tackles fat loss while doubling as a nootropic and as a fitness trainer is a combination that piqued my curiosity.

Our test group reported less stress and improved focus and energy while testing PrimeShred. Additionally, they showed fat loss success through before and after body composition measurements.

Our dietitians confirmed that 250 mg of caffeine could provide excellent thermogenic effects, though some may be too high to tolerate.

PrimeShred comes in a veggie capsule making it more suitable for vegans and vegetarians over Zantrex’s gelatin capsules.

Also, PrimeShred has a heftier price tag, but as our test group discovered, it’s worth it. Plus, when you order directly from the website, you’ll get access to exclusive incentives and the peace of mind that comes with knowing you’re getting the real deal.

Instant Knockout

Instant Knockout is a powerful fat burner created for bodybuilders and athletes. However, with its reputation, it became increasingly popular among everyday gymgoers.

The vegans and vegetarians in our test group appreciated the veggie capsule, a feature that Zantrex lacks.

Instant Knockout contains appetite suppressants Glucomannan and chromium at effective doses, confirmed by our test group participants reporting reduced food cravings. Instant Knockout contains 300 mg of caffeine that will surely get your metabolism and thermogenesis going,

Some users in our test group did not tolerate the caffeine content well, experiencing jitters and headaches.

I asked our dietitians about adding L-theanine, and they reported this likely is included for improved focus and alertness.

Like most supplements, it is best to order Instant Knockout directly from the official website to take advantage of discounts and incentives and to ensure you receive the genuine product.


How Should I Take Zantrex?

You should take two capsules of Zantrex in the morning and two more capsules with your main meal with a full glass of water.

Sensitive people should start with one pill before two main meals to test their tolerance to stimulants.

Make sure you take this fat burner in combination with a healthy diet and exercise program for significant weight loss benefits.

What Is The Maximum Daily Amount of Zantrex I Can Take?

The maximum amount of Zantrex you can take is four capsules within 24 hours. The manufacturer strongly advises against exceeding this recommended daily dosage.

Does Zantrex Interact With Other Medicines?

Zantrex may interact with other medicines because it’s loaded with potent stimulants. We suggest speaking with your healthcare provider before using this product.

Can I Still Consume Caffeine While Using Zantrex?

You can still consume caffeine while using Zantrex, but the manufacturer strongly suggests that you limit your caffeine intake to minimize the risk of adverse effects. Keep in mind that this fat burner supplement already has large amounts of it and other stimulants.

Is Zantrex Dangerous?

Zantrex isn't dangerous as long as healthy adults use it as directed. However, individuals sensitive to stimulants may experience some side effects.

People with pre-existing medical conditions, taking medications, and pregnant or nursing woshouldn'tdn’t use it.

Which Is the Best Zantrex for Weight Loss?

Zantrex-3 High Energy Fat Burner is the best Zantrex for body weight loss.

Does Zantrex Really Work for Weight Loss?

Zantrex 3 might help individuals who already eat healthily and exercise regularly, but it’s very unlikely to work without a vigorous diet and exercise routine.

If you’d rather play it safe and opt for a widely approved fat burner with high-quality, all-natural ingredients in transparent dosages backed by clinical studies, manufactured by a renowned company, and covered by a 60-day refund guarantee, I’d suggest trying PhenQ instead.

Not only does it burn stored body fat, curb hunger, improve mood, and boost energy, but it contains ingredients that prevent new adipose tissue formation.

Order yours today, and see for yourself why numerous glowing user reviews also speak in its favor.

We Recommend This Instead


PhenQ CTA supplement product
Overall Score 5.0
  • Suppresses your appetite
  • Blocks fat production to stop body weight gain
  • Improves your mood and energy levels
  • High-quality, all-natural formula
  • Get the BEST PRICE until the end of June
  • Can be only purchased through the company website
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2 thoughts on “Zantrex Red Review
Is It Really Effective For Weight Loss?

  1. PhenQ has always been my first choice, but Zantrex Red sounds promising!

  2. Zantrex Red is the best weight loss supplement I have ever tried. I have tried many of them before but none have worked as well as Zantrex. The capsules are easy to swallow and it’s not hard on my stomach at all. The price point is way better than most other supplements on the market too which made me switch to this brand.

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