Zantrex Black – From the people that brought us Zantrex 3

Last updated on August 1st, 2016

Zantrex BlackZantrex Black is a controversial weight loss supplement produced in America by Zoller Labs. The present “Black” formulation has been designed to replace the previous two products Zantrex 3 (in a red bottle) and Zantrex Blue (blue bottle). Both products acquired a reputation for causing side effects and the latest incarnation is fast acquiring a reputation that is equally black in nature.

Advertised benefits include:

  • New Accelerated Rapid Release Formula
  • Maximum Potency Liquid-Filled Softgel
  • High Velocity Weight Loss
  • Extreme energy… Fast

However the claims about high velocity weight loss and extreme energy are printed alongside a star, and customers who delve deeper into the reason for the star will discover the promised results are also dependent on “a sensible diet and exercise program” and that “individual results will vary”.

diet pill to avoidClaims: to offer high velocity weight loss ( we are not sure what this means either)

Positives: The company that makes the product has been around for along time …. nice bottle

Negatives: Hard to recommend especially when you compare to PhenQ

How the Formulation Works

Zantrex black bottlesLike its predecessors, Zantrex Black has been designed to work as a combined fat burner, appetite suppressant, and energy provider. If the formulation can live up to the promises made for it the capsules should help users to control their eating tendencies and consume fewer calories each day while also encouraging the body to begin burning its stores of body fat. The fat burning process can often provide an energy boost, but the formulation also contains several sources of caffeine.

Caffeine is usually tolerated well by most people, but overly high doses can cause unpleasant side effects and the manufactures admit each dose provides 300mg of stimulants. That is a lot more than many competing blends, so the fact that so many side effects have been reported is not at all surprising.

Key Ingredients and Blend Potential

Two softgel capsules provide 30mg of Niacin (vitamin B3) and 1,160mg of a proprietary blend.

Niacin is known to be beneficial for the metabolism, but also increases blood flow and may cause a warm sensation to the skin that is often known as the Niacin flush. While this is not in any way dangerous, and some people even find it quite pleasant, the feeling can be a little unnerving for anyone who does not know what to expect.

The Zantrex 3 A Proprietary Blend Contains:

  • Yerba Mate (leaf) Extract
  • Guarana (seed) Extract
  • Trimethylxanthine
  • Damiana (Turnera diffusa var. aphrodisiaca) (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
  • Black Tea (leaf) Extract

The lack of inclusion rates makes it hard to predict how well the formulation is likely to work, but green tea stands out as being one of the better blend additions. It has a good reputation as a fat burner and its effects can be enhanced when it is blended with caffeine, as is the case here, but with 6 caffeine sources included in the blend (yerba mate, guarana, trimethylxanthine, kola, cacao, and black tea), the amount of stimulation provided is unnecessarily high. Black pepper is a valuable inclusion because it is a natural fat burner, but it also aids the absorption of other ingredients and with so much caffeine in the mix that can only increase the chances of side effects.

[info]Usage Instructions –  Two capsules are required 15 minutes before eating a main meal and capsules should always be taken with a full glass of water.

For a “significant energy boost” one to two capsules can be taken as needed, but six capsules should never be exceeded in any 24-hour period.

Best results will be obtained if the capsules are used in conjunction with a healthy diet and exercise program.[/info]

Customer Feedback

A few customers state the product works.

[plain]”Took away my appetite and gave me energy. No shakes or jitters.” [/plain]

[plain]“Great for a workout energy boost and I am losing weight as well.”[/plain]

But an alarming number of customers report experiencing unpleasant side effects. A few sample comments read:

[plain]”The second day I took these i felt very hot and my face began to swell up. My lips looked like i’d just got implants put in them and I felt very unwell. Not recommended” [/plain]

[plain]“I took these before my meal and they gave me stomach ache. The pain continued for several hours and I felt very hot and unwell. Five days later and my kidneys are still feeling sore.”[/plain]

[plain]“Please do not take Zantrex Black. I took two pills and they made me feel really hot. My heart started racing so fast I feared from my life. Don’t make the same mistake. It’s not worth it.”[/plain]

Side Effects & Health Issues

The manufacturers warn against using the product alongside other caffeine sources to limit the likelihood of nervousness, irritability, sleeplessness and rapid heartbeat. They also state the product should not be used alongside or as a substitute for any of their previous Zantrex products because the formulation contains “significantly potent” stimulants (about 300mg per serving).

The product is also unsuitable for people who are sensitive to niacin, pregnant or nursing mothers and people under 18-years of age. People who are taking medications or have existing health issues are advised to seek medical advice before using Zantrex Black.

Purchasing Options & Considerations

Although it is sometimes possible to purchase via Amazon it is usually easier to purchase Zantrex Black directly from the manufacturer. Each bottle contains 84 softgel capsules and has a price tag of $39.99. Customers who opt to sign up for a “VIP Subscription” (automated billing and shipping) secure a saving of $8 per bottle and benefit from free shipping.


A 30 day money back guarantee is offered.

The Bottom Line

Zantrex Black is very much a caffeine-driven blend and the overly generous amount provided easily explains why so many customers report experiencing frightening side effects such as racing heart rates. It is probable that some users may gain some degree of appetite suppression, and fat burning may also be triggered. But as a whole the formulation does not possess the potential of many competing blends, and any good points are far outweighed by the bad, so we are unable to approve the use of Zantrex Black as a weight loss provider.

Alternative That We Recommend

PhenQ what does it doIt’s hard to recommend anything other than PhenQ in the fat burner category.

PhenQ has been available to buy without prescription for a few years now and has become the best selling fat burner / appetite suppressant in the UK, United States, Canada and Australia as well as several other European countries.

Find out more about PhenQ

About Natalie Jay 279 Articles
Natalie Jay is a writer and freelance journalist specialising in the weight loss industry. She has a strong background in writing product reviews and writes accordingly. Natalie is the head of editorial team of several health related websites. You can read more about Natalie Here

Be the first to comment

Leave a Reply

Your email address will not be published.