INVIGOR8 Fat Burner and Natural Appetite Suppressant

INVIGOR8INVIGOR8 Fat Burner is a diet pill developed in America by Biomedical Research Laboratories (BRL).

The company has been trading since 2008 and also markets an INVIGOR8 superfood shake.

As far as we know, BRL is unique among diet pill manufacturers because they also produce a number of supplements designed to boost the performance of race horses.

According to the official website, INVIGOR8 Fat Burner helps dieters to succeed in their quest to beat their belly fat, master their muffin tops, and thin out their thunder thighs.

Which fat burners are highest rated in recent polls?

All of these things are apparently achieved because the formulation provides a number of key weight loss benefits: 

  • Suppressed hunger
  • Less cravings
  • Boosted metabolism
  • Fat burning
  • Muscle building
  • Enhanced mental focus
  • Healthy weight loss

List of Ingredients

There are eight active ingredients in the INVIGOR8 Fat Burner formulation and each (2 capsule) dose provides:

  • Green Tea Leaf Extract (330mg)
  • Raspberry Ketones (200mg)
  • Green Coffee Bean Extract (200mg)
  • Olive Leaf Extract (160mg)
  • Bacopa Leaf Extract (130mg)
  • Chrysin (100mg)
  • Garcinia Fruit Extract (100mg)
  • Forskohlii Root Extract (60mg)

INVIGOR8 Potential

INVIGOR8 Fat Burner should be capable of boosting the metabolism and assisting the fat burning process (when used alongside a calorie controlled diet) because the formulation contains green tea and research shows green tea has the power to do these things.

CoffeeTrim Green Coffee pillsGreen coffee bean extract has similar abilities and both ingredients contain antioxidants that help promote good health.

Will this formulation suppress hunger and prevent cravings? It may prevent sugar cravings because green coffee bean extract helps prevent the blood sugar spikes that can trigger urges to eat sweet food.

The formulation’s ability to suppress hunger is more questionable. Raspberry ketones and garcinia cambogia are capable of doing this, but a good quality extract is required.

There are two forms of raspberry ketones. One is sourced from fruit, the other is manufactured in a lab. The fruit based version works best, but its also extremely expensive, so many manufacturers choose to use the cheaper, man-made version and it lacks the potency of its fruity counterpart.

Garcinia cambogia natural weight lossBRL fail to state which version they are using. Nor do they provide the HCA content of the garcinia cambogia. HCA (hydroxycitric acid) is the active compound in garcinia cambogia and it not only kills hunger, it also prevents the body from storing excess calories as fat. Unfortunately, good results require a potency of 60% HCA and the extract used here may not have it.

BRL also claims INVIGOR8 Fat Burner can build muscle and enhance mental focus. Caffeine improves mental focus, but the only caffeine providers are green tea and green coffee bean extract and neither one is a potent source.

Bacopa leaf extract is often used in nootropic supplements intended to boost cognitive function, but it’s unlikely to boost mental focus. The formulation’s ability to assist muscle growth is also questionable.

Chrysin and forskohlii are both alleged to be testosterone boosters, and testosterone is important for muscle building, but forskohlii requires further study and chrysin failed miserably when it’s testosterone boosting ability was put to the test on human volunteers.

Dosage and Usage Considerations – New users are advised to begin with a low dose and only increase it if no side effects become apparent.

  • Days 1-3: One capsule, two times per day, 30-45 minutes before eating a meal.
  • Day 4 onwards: Two capsules, two times per day, 30-45 minutes before eating a meal.

Customers who wish to obtain maximum results are told to take two capsules three times per day, but this would mean each bottle of pills would only last for 20 days.

Women who are pregnant or nursing a child are advised to check with a doctor prior to using this product. The same advice is offered to anyone who has an existing medical problem and to people who are using medication(s).

INVIGOR8 Customer Opinion

We were unable to find any customer reviews for this product.

INVIGOR8 Potential Side Effects

BRL say people who experience “unusual symptoms” should stop using the product. They also point out the product contains caffeine and too much caffeine may cause nervousness and irritability. However, any caffeine in the formulation will come from green coffee bean extract and green tea and neither one packs much of a punch in this regard.

Places To Buy INVIGOR8 Fat Burner

Although there are BRL product suppliers in many countries of the world, they are few and far between. There are only three retailers selling BRL products in the entire state of Texas, none in the UK, and only one in Germany so, needless to say, for most people, the best option will be to purchase directly from the INVIGOR8 website.

INVIGOR8 Product Pricing and Guarantee

A single bottle of pills contains 120 capsules and bears a price tag of $49.95.

Shipping costs add another $6.95 and push the total spend up to $56.90. INVIGOR8 Fat Burner is sold with a 90-day money back guarantee, but unhappy customers are responsible for all shipping costs involved.

Customers who live in the USA and wish to avoid paying shipping costs can opt to buy INVIGOR8 Fat Burner via auto-ship and will also secure a modest discount. Auto-ship customers who live elsewhere in the world only get the discount and will still have to pay shipping costs.

Two auto-ship options are available:

  • Two bottles for $79.90 (shipped every 60 days)
  • Three bottles for $149.79 (shipped every 90 days)

The Final Appraisal

Given the fact that maximum results will require a daily dose that gives a bottle of pills a lifespan of just 20 days, this is not a particularly cheap product.

The lack of customer reviews is a big issue as well because some of the ingredients have questionable abilities and others, though known to be good, may not have been added in a potent form.

The presence of green tea and green coffee bean extract should give the formulation value as a fat burner, but there are better products that have more to offer. In this were a horse race, BRL’s INVIGOR8 Fat Burner would not be considered a serious contender.

Click here to find out which fat burners are most popular according to customer feedback

Xentrafen Review With Comments

Xentrafen reviewXentrafen is a weight management supplement in capsule form.

It’s produced in America by NexGen Biolabs and the company claim it’s the most sophisticated weight loss product you can get without a prescription.

After taking a look at the formulation, we feel this is unlikely to be true and the fact that the product is no longer listed on the NexGen Biolabs website suggests it’s probably been discontinued.

Claims : Powerful appetite suppression and extreme weight loss

Pros: Respected company. Good ingredients

Cons : Not the most potent formula, others preferred

Click here to find out which diet products are most popular

Xentrafen Benefits

  • Powerful appetite suppression
  • Extreme weight loss
  • Enhanced energy
  • Improved metabolic function
  • Boosted mental focus
  • Significant reductions in BMI
  • Targets fat in stubborn areas
  • Gets rid of cellulite

How Xentrafen is Designed to Work

NexGen claim Xentrafen can target body fat in specific areas and burn cellulite too. Targeting fat is specific areas would be incredibly hard to do, so this claim can probably be taken with a grain of salt.

Cellulite is caused by fatty deposits under the skin, so, if the formulation can deliver the promised fat burning effect, the second claim could hold true.

Xentrafen contains a lot of stimulants, so it should be capable of boosting energy levels and the presence of caffeine in the blend should be good for improving mental focus.

All stimulants have the ability to speed up the metabolism, and this causes the body to burn calories faster.

When the body grows short of calories it begins burning its stores of fat, so, in theory, Xentrafen should do what it’s supposed to do.

If the formulation can also suppress the appetite it will make it easier for users to eat less food and this will further increase the likelihood of a calorie shortage that necessitates the burning of fat.

Key Ingredients and Blend Potential

One Xentrafen capsule provides 337mg of a proprietary blend that contains undisclosed quantities of:

  • 1,3,7 Trimethylxanthine: The name sounds very grand, but this is only caffeine. It has value both as an energy provider and as a fat burner, but if the dose is too high it will increase the likelihood of side effects.
  • Synephrine: A stimulant that taken from a species of orange. It’s good for providing extra energy and has value as a fat burner too.
  • Schizandrol: A stimulant taken from a Chinese plant. Schizandrol may boost energy levels, but it is unlikely to support weight loss and its value as a supplement ingredient requires further investigation.
  • Yohimbine: A tree bark extract. Yohimbine is a stimulant that is often said to be a fat burner. It’s also believed to be good for protecting muscle tissue from diet-related wastage.
  • NN-Dimethyltyramine: This ingredient is usually called hordenine. It’s alleged to be capable of boosting energy levels and burning body fat, but it’s ability to do these things is far from proven. Further research is required into its potential as a weight loss aid and the nature of side effects its use is likely to entail.
  • 5-Hydroxytryptophan: An ingredient that can be derived from the leaves of an African plant called Griffonia simplicifolia. 5-Hydroxytryptophan appears to have the ability to boost serotonin production and the knock on effect of this is hunger reduction.
Usage Guidelines – Only two Xentrafen capsules are required per day. The first one should be taken before lunch and the second one before dinner. A third dose is permissible, but may not be wise because of the amount stimulants the formulation provides.

Xentrafen Customer Comments

Some average customer comments read:

“This is a good product. It makes me feel a little jittery and anxious, but its sorted out my hunger and is helping me to lose 2-3lbs a week.”
“What a load of old cobblers! This stuff doesn’t do any of the things its supposed to do. It just makes you feel kind of wired and strange.”
“Love it! After so long searching for a good diet pill, Xentrafen the answer to my prayers. My hunger pangs have been kicked right into touch, so I am finally finding it easy to eat less and have started to lose weight.”
“i used these pills for a month and never lost any weight. i am extremely disappointed and would get my cash back if i could.”

Xentrafen Side Effects

Some people who have used this product state it made them feel ill. This is probably not that surprising bearing in mind how many stimulants the formulation contains. Anyone who is thinking of using Xentrafen to help manage their weight would be wise to discuss the matter with a doctor first.

Where to Buy Xentrafen

It used to possible to buy Xentrafen directly from the manufacturer’s website, but this is no longer the case. This suggests the product has probably been discontinued. However, at the time of this review, it was still possible to purchase Xentrafen from Walmart at a cost of $23.99 per 60-capsule pot.


Xentrafen does not have a money back guarantee.

The Verdict

Even though the inclusion rates are not provided, all of the ingredients used in Xentrafen are stimulants, so it pretty much certain that the product will be capable of helping people to lose weight.

A healthy diet and some regular exercise will be required, but this diet pill should be capable of doing all the things it’s supposed to do. The problem is the way it’s designed to do it.

Stimulants are not the only way to go. In fact they are probably the worst route to take because some people do not tolerate stimulants well and even those who do are likely to experience side effects when a lot of different stimulants are mixed together.

A-Laceys Reset would have been a better alternative to yohimbe. Some of the other stimulants could have been replaced with green tea or garcinia cambogia. This would have made for a superior product and less side effects.

However, further speculation is useless because the product appears to have been discontinued and, if it has, maybe NexGen know where they went wrong and will produce a superior product at a later date.

Click here to find out which diet products are most popular


Cutting Edge by Bulk Powders

Cutting Edge Cutting Edge is a diet pill manufactured in England by Bulk Powders.

The company is based in Colchester and claims to offer the lowest prices in Europe. Bulk Powders has been trading since 2005 and offers a diverse and impressive range of sports nutrition and health and wellness products.

Items in their range include protein powders, multi-vitamins, and joint care formulations.

The company’s money back guarantee is not absolutely clear, but Bulk Powders appears to be an extremely reputable company and customers are offered an excellent level of after-sales support via telephone and online form.

Claims : To offer multiple benefits such as suppressed appetite, increased fullness and improved digestion

Pros: Respected company with a long history of excellence

Cons : Guarantee period not clear. Not so much a negative but we prefer an alternative product

Click here to find out which diet products are most popular

What is Cutting Edge and How Does it Work? 

Like a many other diet pill options, Cutting Edge is designed to provide several benefits that are intended to encourage fat loss.

The main benefits promised are:

  • Increased satiety
  • Lipid metabolism
  • Thyroid function
  • Improved digestion

Putting it in layman’s terms, its a diet pill that’s intended to suppress the appetite and make the fat burning process more efficient.

Key Ingredients

Six capsules (daily dose) contain:

  • Glucomannan (3000mg)
  • Green Coffee Extract (400mg)
  • L-Phenylalanine (400mg)
  • Caffeine (300mg)
  • Cinnamon Extract (250mg)
  • Peppermint Leaf Powder (50mg)
  • Choline Bitartrate (50mg)
  • BioPerine (5mg)
  • Chromium Picolinate (1mg)
  • Selenium Methionine (55mcg)

Cutting Edge Blend Potential

glucomannan weight loss ingredientGlucomannan is obviously the main ingredient and it’s a good one to have because it’s use as an appetite suppressant has been endorsed by the European Food Safety Authority (EFSA).

It’s a form of natural fibre extracted from the roots of the konjac plant and its ability to curb hunger comes courtesy of the fact that it has the ability to absorb large quantities of water.

The hydration process causes the fibres to expand in the stomach and create the feeling of satiety that’s responsible for suppressing the appetite. Although the value of the ingredient has not been disputed by the EFSA, they state good results will require three (1000mg) doses per day, taken with two glasses of water, before the three main meals of the day.

Green Coffee Bean extractGreen coffee bean extract is also a good ingredient. Although it’s abilities as a thermogenic fat burner generally gain the most attention, it also has the ability to moderate blood sugar levels and help prevent sudden desires for sweet food. Chromium picolinate also has this ability.

The stimulatory powers of caffeine, a proven fat burner in its own right, may help prevent diet-related fatigue. Selenium is necessary for healthy thyroid function.

Peppermint weight lossThe thyroid produces hormones that regulate the metabolism so, on the face of it, selenium would appear to be a valid inclusion, but iodine is equally important for thyroid health and the Cutting Edge formulation fails to make this important pairing.

Peppermint is known to be good for the digestive organs, so the Cutting Edge formulation does contain ingredients that should be capable of helping the formulation work in the intended way.

Usage Instructions – Two capsules are required, three times per day, and should ideally be taken on an empty stomach. The recommended dosing schedule is two capsules before breakfast, two capsules before lunch, and two capsules in the mid-afternoon. However, bearing in mind the way glucomannan works, it would probably be more sensible to take the third dose of the day before eating your evening meal.

Bulk Powders stress the importance of washing down each (2 capsule) dose with two glasses of water. They state this is to help ensure the capsules reach the stomach and prevent the risk of choking, but its always necessary to drink such a volume of water with products that contain glucomannan. It ensures adequate expansion of the glucomannan fibres.

Cutting Edge Customer Feedback

The manufacturer’s website is the only source of customer reviews. This is not ideal. Reviews published at a less biased source would carry a lot more weight.

However some of the reviews slam the product’s ability. That’s a good sign because it suggests the feedback system may be honest.

A few sample customer comments read:

“These really work. I’ve been using them in conjunction with a calorie deficit diet of 400 calories and have been losing around 3lbs per week.”

“Absolutely fantastic and totally works I’m going to order some more.” 

“I didn’t lose any weight and my measurements have not changed so they didn’t help at all.”

“I stepped up my training plan, got stricter with my diet and began with these pills. My body fat is down by a few percent, so I guess they must have helped.”

“I’ve been taking the correct dose everyday exercising, and eating healthy food, but I haven’t seen any difference.”

Cutting Edge Side Effects & Health Issues

If any side effects have been reported, Bulk Powders are keeping quiet about it, but they point out the fact that six capsules contain 300mg of caffeine.

That’s 100mg per dose (about the same as a cup of coffee). This should not be a problem for most people, but the product will be unsuitable for anyone who wants to lose weight without using stimulants or does not tolerate them well.

Cutting Edge is not recommended for pregnant or nursing mothers. People who are under a doctor’s care and/or using medicine or other supplements are advised to get their doctor’s approval before adding Cutting Edge to their daily weight management routine.

Cutting Edge Purchasing Options & Considerations

You can only buy Cutting Edge from the Bulk Powders website and a 30-day supply of pills (180 capsules) will cost you £29.99. That’s considerably cheaper than most other options so, as far as the price goes, it’s not bad at all.


There is a “money back guarantee” and it’s good for 28 days, but it’s not quite what it appears to be. Customers who are “not happy with CUTTING EDGE and have not used an unreasonable amount” can return it.

But the refund will be in the form “Bulk Points” that can only be used to purchase more Bulk Powder products.

This is not a money back guarantee at all and it seems likely that it will only be valid if very little of the product has been used.

Customers would need to use the product for at least a month to give it a fair go; so the Bulk Powders guarantee is does not compare well to the 60-day no quibbles money back guarantee that is provided by the manufacturers of leading weight loss products like PhenQ and Phentaslim.

The Bottom Line

Cutting Edge contains ingredients that should be capable of furnishing it with the ability to do the things it’s supposed to do, but it’s primary power is likely to be as an appetite suppressant.

The formulation does not contain any of the top fat burning ingredients, like green tea or capsicum extract. This could explain why the formulation has failed to benefit so many users.

Appetite suppression is certainly important to weight loss, but it’s not always enough to provide the kind of fast results most dieters crave.

If Bulk Powders had ditched some of the ingredients with lesser abilities, such as cinnamon and selenium, in favour of something with better fat torching abilities this could have been a truly cutting edge product but, as it stands, it’s a poor second to the top diet pill formulations, all of which come with a real “money back” guarantee.

Which diet pills are highest rated – click to find out