Watchdog Approved Diet Pills


Xanthadrene is a diet pill made by Newton Everett who manufactures a range of slimming and body building products. The name sounds like Xanthigen a branded formula made from Japanese seaweed and pomegranate that was featured on the Dr Oz show. Xanthadrene also contains seaweed and pomegranate so it is all a bit confusing.

We take a look into Xanthadene to find out more about this supplement.

Xanthadrene Pros

  • May have an effect upon weight loss
  • Some of the ingredients look promising

Xanthadrene Cons

  • No money-back guarantee
  • No customer feedback
  • Confusing – cited clinical evidence is based on a similarly named supplement
  • Fucoxanthin and pomegranate extract could be yet another overhyped formula
Watchdog Rejected Diet Pills

Xanthadrene Review

Xanthadrene Facts

  • Manufactured by Newton and Everett and sold via the Biovea website outside the USA
  • Each bottle contains 90 capsules – 1 months supply
  • Similar name to Xanthigen – a pomegranate fucoxanthin formula featured on Dr Oz

According to the advertising, Xanthadrene is a revolutionary new compound designed to reduce body weight by up to 10%. It contains seaweed extract Fucoxanthin, Pomegranate Extract, Green Tea Extract and Hoodia. The makers claim that it is proven by science.

The name Xanthadrene is very similar to a branded formula called Xanthigen, which is composed solely from Fucoxanthin and Pomegranate extract, a formula that has undergone clinical testing and has hit the news. Xanthigen looks promising for weight loss and was featured on the Dr Oz show, where he called it;

a power pill that will pack a punch for you and increase your metabolism.

The Xanthadrene advertising does not mention Xanthigen by name but has used some of the testing into Xanthigen in its advertising. The product name also has strong similarities.

According to the Xanthadrene advertising a clinical study carried out at the Hokkaido University in Japan found that Fucoxanthin – the compound that gives brown seaweed its colour, targets a protein called UCP1 which plays a role in how quickly abdominal fat is burned.

In addition, it appears to stimulate the production of DHA an omega fatty acid present in oily fish. According to the Newton Everett advertising, this increases the speed of the metabolism enabling you to burn off fat at a faster rate than previously possible.

Strangely, the Xanthadrene product information does not mention the pomegranate extract – Ellagic acid as being relevant to the formula. This is odd because Xanthigen has been tested and found to be very promising and it appears that Ellagic acid is a key ingredient.

Moving on from Xanthigen, Xanthadene also contains Hoodia extract, which the company maintains works by tricking your brain into believing it is full via a special molecule called P57, which has an effect upon brain hormones and appetite control. There is no evidence however that this is true or even if there is a special molecule. After years of research by major companies such as Unilever and thousands of dollars of investment, the scientific claims were not proven and today Hoodia has been discredited by the scientific world.

To take Xanthadrene

Take one (1) capsule three (3) times daily with food and 8 ounces of water. This product should be used in conjunction with a sensible diet and exercise program. Do not exceed three (3) capsules per day.

Xanthadrene is manufactured by Newton Everett a major supplements manufacturer based in the USA. Their other supplements include Advantrim and Slendersol both which we have covered (and rejected) on the website.

Newton Everett sell word wide. The supplements are available via the Newton Everett website in the USA and via Biovea throughout the UK and Europe.

Xanthadrene Concerns:

  • Will any of these ingredients cause side effects? Long-term effects are unknown
  • Misleading clinical evidence – what does this say about the company?
  • Will people believe this is the same product as featured on the Dr Oz show? It is not.

What Does Xanthadrene Claim To Do?

According to the advertising;

XANTHADRENE, a new non-stimulant thermogenic fat burning weight loss formula with fucoxanthin, a revolutionary new compound clinically proven to reduce body weight by up to 10%.

There are five key points about Xanthadrene:

  • Promotes & Supports Healthy Metabolic Rate & Breakdown of Fat.
  • Burn up to 10% more body weight, mainly from around the abdomen.
  • 450% greater weight loss than diet alone after just 16 weeks!
  • Contains Fucoxanthin Extract from Brown Seaweed and Pomegranate.
  • Contains Certified South African Hoodia (an excellent appetite suppressant) and a Green Tea Extract (for energy)

It explains:

Recent studies conducted on fucoxanthin have really peeked the interest of the scientific community. What they have determined is that a high potency extract of the Fucoxanthin contained within the Wakame Seaweed has vast potential worldwide to combat obesity and associated diseases, such as Type II Diabetes.

Sounds great and the product advertising claims that this ingredient has undergone clinical trials on humans to prove this.

So What Is Xanthadrene and What Are The Ingredients For Xanthadrene?

Xanthadrene is a diet pill that is supposed to help your body burn fat without stimulants.

One serving size is equal to one capsule and the formula is partly contained in a proprietary blend so we cannot provide full ingredients amounts details.

Proprietary blend (283mg)

  • Green Tea Extract (18mg caffeine): With proven health benefits because of its high levels of antioxidants, green tea has been also been found to promote modest weight loss. It can help increase the speed the metabolism. Some medical professionals believe that it works best when incorporated as a beverage into your daily diet. Green tea and caffeine appears to work better than either ingredient alone.
  • Certified South African Hoodia Gordonii Cactus (powder): This cactus was once regarded as the wonder of weight loss but has now been discredited after testing by the major pharmaceutical companies proved it to be ineffective. It can cause side effects. See our Hoodia diet pill scam article here.
  • Pomegranate Extract (5 mg Ellagic Acid): Naturally occurring substance with many health claims including protection against viral infections and cancer but no evidence that it does this. When used in equal combination with Fucoxanthin as in Xanthigen it is believed to increase metabolism and fat burning.
  • Fucoxanthin (5 mg): This substance is derived from Wakame, Japanese brown seaweed (Undaria Pinnatifida) According to the Xanthadrene advertising this substance was tested on human volunteers but despite extensive searching, we were unable to find a record of Hokkaido University in Japan actually carrying this out.
    What we did find out however is that Hokkaido University has carried out clinical tests on animals, which show that Fucoxanthin may have many benefits to weight loss. One test showed reduced cholesterol levels in rats.
    Results were promising but animal testing never proves that a substance will work on humans in the same way.
    The claims that you will lose 450% more weight by using this rather than diet alone seem completely unfounded.

So What Does All This Mean?

This diet pill is not the answer to world obesity. Hoodia has been totally discredited and the claims about it disproven. Green tea may promote modest weight loss but may work better if included as a beverage in your normal diet.
However, the combination of pomegranate and fucoxanthin has been tested as a formula called Xanthigen and this looks very promising. One test carried out in Russia on 151 women concluded that;

Xanthigen promoted weight loss, reduced body and liver fat content, and improved liver function tests in obese non-diabetic women. Xanthigen and Fucoxanthin also increased REE. This product may be considered a promising food supplement in the management of obesity


Of course, Xanthadrene is not the same product. However, it does contain the same Fucoxanthin and Ellagic acid combination in the formula as Xanthigen.

The advertising has used the clinical tests carried out on Xanthigen and passed this off as their own. We cannot possibly know whether the ingredient amounts and their quality reflect this other clinical test.

Does Xanthadrene Have Any Side Effects?

We have been unable to find any independent feedback for Xanthadrene so we cannot bring you any true-life experiences, just look at the ingredients list.

Potential side effects may include:

  • Stomach cramps
  • Nausea
  • Headaches
  • Skin rash
  • Changes to blood sugar levels


Avoid if you are pregnant or breast-feeding. The product information publishes the following warning:
“Do not take this product if you have a known medical condition including high blood pressure, diabetes, any cardiovascular disorder, heart disease, hyperthyroidism, or are taking antidepressant medications.
If you have questions about the advisability of taking this product, consult your physician prior to use.”

Any Xanthadrene Reviews From Customers?

We were unable to find any customer reviews.

So Does Xanthadrene Work?

It may work. The clinical research into Fucoxanthin and Ellagic acid as Xanthigen looks promising.

The problem is that this is NOT the same formula that was tested. The other problem is that it is very common for so-called “super” ingredients to be overhyped and then disproven. We have seen all this before with Hoodia – also included in this supplement and with other Dr Oz favourites such as Raspberry Ketones and Garcinia Cambogia.

In fact looking at Dr Oz’s reputation, which according to the medical community is in tatters, his endorsement of any supplement ingredient on his show gives the impression that it is just another “snake oil” quack ingredient that probably will not work.

However If you were to take this as part of a healthy diet and exercise programme it may help you lose some weight. In truth you may do better looking for a supplement, which contains the original formula Xanthigen, rather than taking this supplement that is essentially a copy. At least Xanthigen has been tested whereas Xanthadrene has not.

Where Can I Buy Xanthadrene?

If you are in the USA, you can buy Xanthadrene direct from the Newton and Everett website. 1 bottle of 90 capsules (1 months supply) costs $49.95 plus shipping (not provided).

If you live outside the USA, you can buy Xanthadrene from the Biovea website. 1 bottle of 90 capsules costs €41.95 throughout Europe. In the UK, 1 bottle of 90 capsules costs £33.95 also from Biovea.

You can also find Xanthadrene on sale from where it is sold in combination with other supplements. For example, 1 bottle of 90 capsules of Xanthadrene plus Threelac Probiotic – a probiotic supplement costs $73.95 from one seller. It does not appear to be very popular.

What About A Guarantee

No money back guarantee is on offer.

Watchdog Verdict

We have found Xanthadrene a confusing product. It contains ingredients that have performed well in clinical testing under a different trade name Xanthigen and Newton and Everett have used this research as part of their advertising, but they have not been straight.

They have not mentioned Xanthigen by name even though they have copied the name and the formula and have used the results of the Xanthigen clinical tests in their advertising.

In addition, Xanthadrene contains additional ingredients and although we like Green Tea, Hoodia must be seen these days as a filler ingredient. It has been proven ineffective despite a large amount of clinical tests – some which did indicate positive results initially.

Let’s get one thing straight. Xanthadene has not been tested and it has not been featured on the Dr Oz show. The name sounds similar to Xanthigen and there are similarities but these are not the same products.

There are always new crazes in diet pills and once Dr Oz gets hold of a product it is enough to spawn a long list of imitations. There is no magic pill for weight loss and only time and further clinical testing will tell if the Fucoxanthin Pomegranate combination is worth taking.

Leaving all this aside, will Xanthadrene help you lose weight? It might work a bit, it seems safe and we have certainly seen a lot worse but it is certainly not good enough to add to our approved list.

Watchdog Rejected Diet Pills

#1 Consumer Choice: Superfruit Slim

Superfruit Slim

Superfruit Slim

The most potent Superfruit diet pill on the market, includes clinically proven Raspberry Ketones, African Mango and Acai Berry.

Why is Superfruit Slim Watchdog Approved?

  • 4 strongest superfruit extracts in one capsule
  • Clinically proven ingredients
  • 30-day money-back guarantee
  • FREE shipping and buy 3 get 1 FREE offers!

<= Click here to Read our Full Review =>

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Share or comment on this article

Leave a Reply

Be nice. Keep it clean. Stay on topic. Please do not spam.

* Review comments: Please disclosure if you have any financial interest in the product.