Best Rated Diet Pills Free Trial Scams


SlimZene diet pills are marketed as being a safe and effective weight loss aid that can help users to control their appetite. The company has however been accused of running a ‘free trial scam’.

Below we have reviewed SlimZene against our review criteria to help consumers make an informed decision.

SlimZene Review

SlimZene Pros
  • Key ingredient has shown positive results for appetite suppression in some clinical studies
  • Does not contain stimulants
  • Quantities of ingredients are made available to view before purchase
SlimZene Cons
  • The company operates on an auto shipping and recurrent billing basis
  • Side effects might occur, despite the company's claims to the contrary
  • No money back guarantee

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SlimZene Review

The manufacturers of the SlimZene pills boast that their product provides an extremely safe way for users to achieve a much quicker and easier weight loss. It is stated in particular that the pills can increase energy levels and reduce the body weight of users simultaneously and that the pills result in no side effects. There are however some potential side effects and the company behind the product has been accused of running a ‘free trial scam’.

Claimed weight loss benefits

The SlimZene website contains a number of claims and statements relating to how the pills can help to aid weight loss in their users. Though a number of strong claims about weight loss are made, the manufacturers only state one of the five main weight loss properties; Slimzene is said to work as an appetite suppressant.

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How SlimZene Works


Slimzene is said to suppress the appetite through the fibre included in the pills. It supposedly works with the liquid that can be found in the stomach and is said to expand in size, meaning that users will feel fuller for longer as it remains in the stomach for a longer period of time.

It is also claimed that the formula will help users to reduce their meal portions by slowing down the rate at which the body is able to absorb carbohydrates and sugar into the bloodstream. These two effects could help to prevent the hunger pangs that we get when our body tells us that our blood sugar levels have dropped.

The SlimZene pills are made up of a combination of ingredients, which its manufacturers call the proprietary blend of SlimZene Propolmannan. This blend includes Amorphophallus Konjac K. Koch and Amorphophallus Japonica fibre extract (root).

Amorphophallus Konjac

This is the name of a plant and it is from the root of this plant that glucomannan is extracted. Glucomannan is a fibrous substance that is commonly added to appetite suppressant supplements. The ingredient is thought to expand in the stomach upon contact with water, making the user feel physically full and so preventing them from overeating. This ingredient has also been said to impact blood glucose levels in the past.

Amorphophallus Japonica

The product website gives a short explanation of Amorphophallus japonica, an herb included in the pills. They use this herb to explain the gel-like nature of the fibre discussed above in relation to its appetite suppressing qualities. According to the website, it is used to make noodles and other ‘gummy like’ substances and is included in the fibre to allow it to have its indigestible effects.

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Key SlimZene Ingredients

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The SlimZene diet pills contain relatively few ingredients, all of which are sourced naturally. They are made up of what the manufacturers call the proprietary blend of SlimZene Propolmannan. This blend includes Amorphophallus Konjac K. Koch (Glucomannan) and Amorphophallus Japonica fibre extract (root).

Amorphophallus Konjac

Known more commonly as the konjac plant, this species is native to certain parts of Asia. It has long been used as a diet substance thanks to its fibrous nature, which has been associated with appetite suppression. The plant’s roots contain glucomannan, an ingredient with strong associations with increasing satiety.

Amorphophallus Japonica

This plant is a member of the same genus as Amorphophallus konjac and as such, is thought to have many of the same properties. Namely, its extract is thought to be high in fibre and so might have appetite suppressive qualities.

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Clinical Studies

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The SlimZene website, as well as providing a short explanation relating to how the product works, also includes a section and link to a clinical trial or two in support of this. The site emphasises that the product has many supporting clinical studies and that the manufacturers had to select only three of them to put on their site.

Whilst not claiming that the SlimZene pills themselves have undergone any clinical testing, the website does imply, on more than one occasion, that they will result in real weight loss effects and that they have been scientifically proven to do so. The manufacturers have noted that the subjects who had taken part in the clinical trials to which the site provides a link, were specifically told not to change their daily eating habits or their regular diet and were to take part in no calorie restricted diets or ‘exhaustive exercises’ during the test period. Despite these rules, it is emphasised that the subjects were still able to lose weight through the regular consumption of Glucomannan alone.

Amorphophallus Konjac (Glucomannan)

The first clinical study to which they refer involved nine non-diabetic subjects and its main aim was to determine how the Glucomannan affected the levels of glucose present in the bloodstream. At the end of the study, no significant rise in the mean blood/glucose concentration was demonstrated when the subjects had been given a highly purified, high-density form of the ingredient. However, when they were treated with low viscosity Glucomannan, an increase was noted at around 60 minutes although it was not significantly different from the control subjects at 30 min. It was concluded that this suggested that the low viscosity Glucomannan delayed the rise in glucose concentrations after the subjects had consumed a meal.

In the same study, the effects of Glucomannan on cholesterol were also examined. It was found that the mean cholesterols of both the obese and healthy weight subjects were reduced although mean triglyceride levels were only reduced in those who were obese and diabetic. As a result, the study concluded that significant reductions of the level of glucose found in the bloodstream and also significant reductions in body weight, were to be observed in those subjects who were both obese and suffering from diabetes.

In relation to the appetite suppressing qualities of the ingredient it was noted that sensations of hunger were felt by 24.2% of subjects at the beginning of the study which decreased by almost half as 12.4% of subjects were feeling hungry 4 weeks into the treatment and declined even further so that only 7.2% at 8 weeks in.

We also did some research into this ingredient and found a study that is published in the US National Library of Medicine concerning the effect of the Glucomannan on obese patients. In this study, subjects were also told not to change their exercise or eating patterns for the entirety of the 8 weeks in which the experiment lasted.

This study in particular may be more useful in terms of substantiating SlimZene’s claims as it involved purified Glucomannan Fibre in the form of a food supplement. 20 obese subjects took part in the study, some of whom received the Glucomannan and the others a placebo both given in 1g doses in the form of 2 500mg capsules. These were taken with 8oz of water an hour before each of the subjects’ 3 meals per day.

The results showed that the Glucomannan did induce a significant mean weight loss of 5.5 lbs over the 8 weeks. As well as this, cholesterol was also reduced and no adverse reactions or side effects were reported by any of the subjects. This study is particularly useful because it uses the same amount of Glucomannan that can be found in the SlimZene pills according to its ingredient list and therefore suggests that the pills do contain enough of the ingredient to provide realistic weight loss results if taken correctly.

The last study that has been referred to on the SlimZene website involved an examination of the effects of Glucomannan on serum cholesterol in healthy men who had consumed it only for a short period of time. The main advantage with this study is that it includes a significantly larger amount of subjects, although it must be remembered that they are all of the same gender, which in some ways may limit the application of the results that follow.

63 healthy males took part in the study and after a 2 week base line period they were given either 3.9g of Glucomannan or an equivalent placebo daily for a total of 4 weeks. It is worth noting here that this is almost 4 times the amount of the ingredient that is actually present in the SlimZene diet pills. After this came a ‘washout period’ of 2 weeks before the subjects swapped treatments for a further 4 weeks. Once again, the subjects were encouraged not to change their eating or exercise habits for the duration of the study.

The results showed that the Glucomannan Fibres reduced total cholesterol concentrations by a relatively large 10%. It also reduced low density lipoprotein (LDL) cholesterol concentrations by 7.2%, levels of triglycerides by 23% and also lowered systolic blood pressure by 2.5%. In contrast, the high density lipoprotein (HDL) cholesterol of the subjects and the ratio of this to the LDL cholesterol did not change significantly during the test and no change in diastolic blood pressure or body weight was observed.

These results demonstrated that although the Glucomannan is an effective cholesterol lowering dietary fibre, in these quantities it did not actually produce any results in terms of weight loss. As emphasised above, this particular clinical study used a large dose of Glucomannan in comparison to most others and also in comparison to the actual amount that is contained in the pills.

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SlimZene Side Effects

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Since the SlimZene diet pills are made up of all natural ingredients it is easy to assume that they do not come with any significant side effects. The manufacturers of the pills maintain that they are safe for people to use over quite long periods of time but fail to mention any of the side effects that have been associated with the Glucomannan that makes up the majority of the pills. The most serious of these includes a blockage or piercing of the throat or intestine and other, more common and less severe symptoms that users may experience include (but are not limited to): constipation and diarrhoea.

Due to the fact that the company has selected trials in support of the pills that do not mention any side effects, the company carries on explaining further that the main ingredient used in the pills has been put through ‘very rigorous’ testing in order to ensure that it is safe for consumption as a diet supplement. It specifically relies on the clinical studies it references emphasising strongly that they did not reveal any serious adverse effects and even goes as far as to say that since the pills have been on the market, there have been no reports by consumers of any such serious symptoms either.

Amorphophallus Konjac (Glucomannan)

Although only experienced in quite rare circumstances and most likely to occur in those that are already suffering from some related condition, glucomannan has been associated with blockages of the throat and gastro-intestinal system.
Due to the fact that it is a fibre, Glucomannan is known for absorbing water in the body. This absorption allows the fibre to increase in size by a substantial amount. This is potentially dangerous and can result in grave consequences if the large fibre gets stuck in the oesophagus (throat) before it reaches the stomach. This results in an obvious choking hazard and so consumers should be especially careful when swallowing the pills.

In very rare cases, the fibre can even pierce the oesophagus and the consequences of this include the need for surgical treatment to remove the fibrous mass. It is strongly advised that anyone who is suffering from or has previously suffered from oesophageal problems including any previous surgeries should completely avoid the ingestion of any Glucomannan and should not take these pills under any circumstances.

These same risks are also associated with the intestines as the fibre is attempting to pass through the body and so it is also recommended that those with intestinal problems do not attempt to use the SlimZene pills.

Also associated with the fibrous nature of the ingredient Glucomannan are side effects concerning the gastric area of the body. Compared to those mentioned above, these symptoms should (in most cases) be mildly unpleasant and not pose any serious life threatening risks but potential consumers should be warned as to what they should expect whilst consuming the pills in any case.

These sorts of symptoms include loose stools and diarrhoea, constipation, flatulence, bloating and sometimes even stomach or abdominal cramps. These types of side effects should only generally last up to 2 weeks after users start using the pills and should ease up and in most cases disappear as the body adjusts to its new diet. Having said this, if you do experience these symptoms for a prolonged period of time or with increased intensity then it would be wise to discontinue the use of the pills and seek medical advice from your GP.

Our experts always urge that all potential consumers should consult their doctor before attempting to use any form of diet product. It is especially important that you talk through the potential use of these pills with a medical professional should you be suffering from any underlying medical condition even if you do not think it is relevant since the pills may cause interactions with medicines, especially in those who are diabetic and taking insulin.

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How to Use

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The SlimZene website does not provide any clear information concerning how to use the pills on its main page. It does however include some directions for use on its FAQ page.

It is first stated that users should take 2 capsules of the SlimZene pills half an hour before eating meals and that you must drink at least 16oz of water with this. This sounds fairly straightforward, but the directions for use then go on to say that users may take up to 6 capsules per meal with 24oz of water depending on the food portion and their individual eating habits and diet. This seems to contradict the first statement, which is fairly strict and provides for a much more flexible use of the product. It is highly recommended that in order to clarify this, you read the directions for use on the packaging.

Due to the effects that the pills may have on the body, we would not recommend their use for the following groups of people: pregnant or nursing women, those who are suffering from or have previously suffered any throat or intestinal damage, gastric disorder, diabetes, or any other blood sugar related problems. If you are unsure about whether you should be taking these types of pills always consult a GP before doing so; this is particularly recommended if you suffer from any pre-existing medical conditions.

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Who Makes It?

The SlimZene website does not contain very much information about the company behind the pills. In fact, it hardly contains any information at all other than the corporate address in which the company resides. The company behind the pills is named as Natural Health Network Ltd.

An internet search of this company revealed that both the company and the actual SlimZene website have been involved in allegations over false advertising.

In short, these claims primarily concerned misleading advertisement relating to the ‘free trial’ of the pills. It is alleged that this breaches the UK Advertising Standards Code, as the trial is not actually free. The product is sold using what is known as a ‘free trial scam’, whereby customers are enticed into signing up to a ‘free trial’ of the product, where they only have to enter payment details for the delivery. The company then uses these payment details and withdraws a significant amount of money from the customer’s account every month in exchange for another bottle of the product without any further notice. The customer will also usually have to pay for the ‘free bottle’ unless they cancel the contract and return the bottle to the manufacturers within a certain time period.

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Where to Buy SlimZene


SlimZene has a main website through which potential consumers can order the product. As well as this, searches on both and pull up a number of similarly named diet supplements. As always, our experts do not recommend buying through third party retail websites even if the product is being sold for a significantly lower price. When you buy through these third parties, there is no guarantee that either the product or the ingredients listed are actually those that have been sold to you.

The SlimZene main website operates on an auto shipment and recurrent billing system which potential consumers should make themselves fully aware of before they commit to an order. It would be wise to make sure that you are fully educated about this process so that you know exactly what to expect. You can read the specifics in the SlimZene terms and conditions but we will summarise the process of ordering in the following paragraphs.

Unlike some other diet products that operate on the same auto shipment basis, you are actually able to purchase the pills without signing up for a ‘free trial’. The site offers 3 different packages including different amounts of the pills and the relevant prices are as follows: one bottle containing 60 capsules costs £69.99 plus a £2.49 shipping and handling fee; two bottles costs £139.98 and with this package, you also get one bottle free making your total of pills 180. You will also receive free shipping with this option; the ‘free trial’ option, which will be discussed below.

If a consumer decides to purchase the pills rather than to take part in the free trial it is unclear as to whether the auto shipment programme will still apply. With no indication of this in the terms and conditions, we would urge potential consumers to get in touch with customer services to confirm whether this is the case. They can be contacted via email, post, or phone.

To claim the ‘free trial’ you must enter your details, including payment details onto the form located at the top of the page. This is because although advertised as free, you will actually be paying for the shipping and handling fee, which for UK orders is £2.49.

When customers sign up to this free trial, they are actually enrolling into an auto shipment programme. This means that if you do not cancel your subscription to the programme before the end of the trial period (14 days from the date you initially placed your order not when it was delivered to you, then on the 15th day you will be charged £69.99 plus a £4.95 shipping and handling fee for a month supply of the product (1 bottle). This will be taken from the credit card you signed up with every month with no need for prior authorisation until you cancel.

To cancel your enrolment in this programme you must contact customer services. It is important to note that you will be liable for any products that have already been shipped before you cancel.

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Does SlimZene Meet our Approved Criteria

Money-back-guarantee: There is no mention of a money-back guarantee with this product.

One-off payment: The product has been associated with an auto-payment programme in the past.

Manufacturing Standard: There is no mention of any official manufacturing standards.

Accompanying Diet Plan: There does not appear to be a diet plan with this product.

Ingredients and quantities disclosed: A full ingredients list is available.

Company contact details readily available: Full contact details are provided on the manufacturer’s website.

SlimZene does not meet our ‘Approved’ criteria as there is no money-back guarantee or diet plan and the product has been associated with a ‘free trial scam’. There is also no mention of manufacturing standards on the official website.

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Overall Verdict

There is some scientific research into the key ingredient in this product that indicates that it might have beneficial effects as an appetite suppressant. Results of studies have however been varied, and not all have proven the ingredient to be beneficial. There are potential side effects associated with the product despite claims to the contrary on the official website. The manufacturers have been reported to run a ‘free trial scam’ whereby customers are automatically charged large sums of money from their credit card monthly after signing up.

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