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Meratol is advertised as a metabolism boosting diet pill that has gained attention through celebrity endorsements. The product has not been proven to aid weight loss in clinical trials.

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

Meratol diet pills

Meratol Pros
  • Claimed to target four key areas of weight loss
  • Should be easy to use
Meratol Cons
  • Ingredients have not been proven to aid weight loss, as claimed on the official website
  • Some important information lacking from the official website

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Meratol Review

Meratol diet pills are claimed to feature three proven ingredients and have the added bonus of increasing alertness and endurance. They are primarily advertised as metabolism boosting pills, but clinical studies do not fully support this claim.

Claimed weight loss benefits

Meratol is claimed to target four of the five key areas of weight loss: metabolism boosting, fat burning, carbohydrate blocking, and appetite suppression.

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How Meratol Works

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Meratol purportedly works by boosting the body’s metabolism, by blocking fat and carbohydrates from becoming absorbed, and also by helping to burn calories much more quickly than normal. On top of this, Meratol is said to reduce one’s appetite, and consequently minimise any food cravings, so that the risks of fatty food intake are reduced.

Meratol supposedly works by boosting your metabolism, which in turn is said to increase the rate at which food is digested and converted into energy within your body. This means less of the food you eat should be turned into unused fat. Meratol does is claimed to achieve this through three ingredients, which are said to have all been proven to boost your metabolism with obvious effects when you take the supplement as your energy levels rise quickly.

Meratol contains capsicum extract, which is found in natural foods including chillies and hot peppers – it is said to work by burning calories before they can be turned into fat, allowing a natural manner of weight loss. Seaweed extract is also present, and this is claimed to reduce carbohydrate intake within the body. Other ingredients include cactus extract, which can supposedly control blood sugar levels and consequently help to control the body’s sugar cravings, and prickly pear extract, which apparently helps to boost metabolism in order to burn unwanted fat.

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Key Meratol Ingredients

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There are three key ingredients in Meratol, which are all claimed to be clinically proven to boost your metabolism. The ingredients are: Cacti-Nea, ID-Alg and Capsicum.


Cacti-Nea contains the extract of Opuntia ficus indica, also known as prickly pear, and is said to reduce fat gain as well as increase water weight loss.


ID-Alg is a brown seaweed extract that is thought to reduce the weight gain when you overeat. This could be especially useful for reducing the effects from a day of overeating when on a calorie reduced diet plan.


Capsicum is a common ingredient in weight loss pills that comes from hot chilli plants and is claimed to have the effect of firing up your metabolism and acting as a fat burner.

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Clinical Studies

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Clinical trials are research studies that explore whether a medical strategy, treatment or device is safe and effective for humans. They are also used to show what medical approaches work best for certain illnesses. A lot of scientific research is done first before any clinical trial takes place, and then the next step is normally animal testing to see how the approach affects a living body, and if it could be potentially lethal. However, what does work well on animals in a laboratory environment wouldn’t necessarily work in the real world so that’s when tests on humans are needed.

It is claimed on the official website that a number of clinical studies have been carried out to prove the properties of Meratol for lowering the body’s cholesterol and generally helping people to lose weight. We were able to find these studies and they have been published, but they do not prove that Meratol can aid weight loss – this is a far-fetched claim. Many more studies on the ingredients and the product as a whole would be required before this statement could be made with any certainty. The company behind Meratol endorses its product through the following three studies:


One study supposedly reflected how Meratol was used to allow a progressive induction of body water mass loss, as well as a limitation of fat mass gain. At the same time, Meratol supposedly preserved mineral balance within the body, and had no side effects upon blood pressure. The conclusions of this study were drawn as follows: a particularly receptive population confirms the weight management and well-being potential of the ingredient Cacti-Nea, which is found in Meratol. These results also suggest that Cacti-Nea could have beneficial effects on some kind of cellulite, reflecting positive effects upon the body.


A study on another of Meratol’s ingredients, a brown seaweed extract, was tested on rats, and showed positive results – ID-Alg was said to be able to reduce the negative effect of a hypercaloric diet on body weight and body fat gain, and this test was later confirmed on humans. Consequently, it is tated that Meratol can be held responsible for weight-control, reduction of fat story and body fat mass, and caloric intake control, without the need for frustration or lifestyle modification. No side effects or adverse events were reported either, reflecting positive results.


One study was produced in order to test the capaicinoid ingredients held within the Meratol tablets. This clinical study is said to reflect how carbohydrate oxidation was significantly higher and lipid oxidation significantly lower in the red hot pepper diet than in the control diet. These findings purportedly show how red pepper increases both diet induced themogenesis and lipid oxidation, proving excellent for faster metabolism and fat burning. No link is provided for this study either, so it cannot be seen as reliable.

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Meratol Side Effects

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Meratol is claimed to be a safe product with few to no side effects. This is however, not necessarily the case. Just because a product contains only ingredients from natural sources does not mean that it will be safe for consumption and side effect-free.


This ingredient is essentially the extract of a cactus called Opuntia ficus indica, also known as the prickly pear. The cactus is thought to be safe when consumed as food, but extracts might only be safe in medicinal amounts in the short-term. Not enough studies have been performed on the ingredient to determine potential long-term side effects. Adverse effects might include nausea, increased frequency of stool, diarrhoea, bloating, and headaches. It is advised against taking this ingredient if you are pregnant, breastfeeding, or have scheduled surgery in the next two weeks.


This ingredient is brown seaweed extract. WebMD states that not enough is known about this ingredient to be able to list potential side effects and discuss its safety. We recommend that you consult a doctor before taking this ingredient if you have any pre-existing health conditions and avoid taking it in the long-term.


This ingredient is likely to be safe for consumption in food amounts, but can still cause some side effects such as runny nose, stomach irritation, diarrhoea, sweating, and flushing. In the long term, it might not be safe to consume capsaicinoids in high doses. Potential side effects of long term usage include liver and kidney damage.

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How to Use

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It is recommended that users consume two capsules of Meratol every morning with a large glass of water. It is stated that users should not exceed the recommended dose. No information is provided on people who should not take the product, but as some of the ingredients are understudied, we would recommend consulting a doctor before taking this supplement, particularly if you have any pre-existing health conditions. Based on the ingredients list, you should avoid this product if you are pregnant or breastfeeding, or if you have surgery scheduled within two weeks.

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Who Makes It?

Marlia Health are the company behind manufacturing Meratol. They are a global contract manufacturer and private producer of vitamin supplements, claiming to have over thirty years of combined industry experience. Marlia Health say that over thirty brands across ten different countries around the world rely on their company for their supplement consultancy, manufacturing, and labelling needs. They are engaged primarily in researching and developing these vitamin products for vitamin brands and start-up supplement companies.

Marlia Health appears to be based in Panama. An email address and phone number is provided, but no postal address. There is no mention of any official manufacturing standards or practices.

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Where to Buy Meratol


Meratol is only available to purchase from a few sources on the internet and cannot be found in any high street stores in the UK. Prices vary from place to place, you can spend £35 to £65 for a months worth of tablets. There is no money back guarantee.

On the official website, the first option is to buy a month’s supply, which will set you back £34.99 for 60 capsules. Alternatively, two month’s supply will cost £69.98, with better value coming in for bigger quantities. For a three-month supply, you are able to save twenty per cent, costing £83.99 for 180 capsules. Even better value for £98.99 is to buy a four month’s supply of Meratol, which saves you over forty pounds, and even gives you a month’s supply for free. For £34.99, you can buy a month’s supply of Meratol through

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Does Meratol Meet our Approved Criteria

Money-back-guarantee: No. The official website does not mention a money-back guarantee.

One-off payment: Meratol can be purchased from a few online retailers for a one-off payment.

Manufacturing Standard: There is no mention of manufacturing standards.

Accompanying Diet Plan: There is no mention of a diet plan.

Ingredients and quantities disclosed: Precise ingredient quantities are not disclosed.

Company contact details readily available: An email address and phone number is provided, but no postal address.

Meratol does not meet our ‘Approved’ criteria as there is no money-back guarantee or diet plan, and some information is lacking from the official website, including details of manufacturing standards and precise ingredient quantities.

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Overall Verdict

On the official product website, Meratol is claimed to target four of the five key areas of weight loss; however, these claims are not backed by scientific evidence. Some of the ingredients have been subject to preliminary study, but none have been proven to have weight loss effects. The product is not sold using an autoshipment programme, but some important information is lacking from the official website, including details of manufacturing standards and precise ingredient quantities. Whilst no severe side effects have been reported, the lack of studies on the ingredients makes it difficult to judge the safety of this supplement.

Average rating:  
 28 reviews

Not good enough

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Appetite reduced, weight didn't

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Not strong enough

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Not sure they were worth it

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stick wih exercise and a diet!

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can't fault it!

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Not convincing me

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Top quality

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Its ok, if not spectacular

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Very good!

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Don't believe the claims

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Slow to get to work!

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Will work only with exercise and dieting!

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waste of money

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Changed my life!

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Meratol does work!

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Maybe I did something wrong?

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They'll work if you work!

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It can work for you

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Does Not Work

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Won't be using this again!

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Could feel them working!

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Pretty good!

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Sickness side effects!

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might work better for those with more to lose

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Not much impact

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16 responses to “Meratol”

  1. Carol Head says:

    I saw an advert for Meratol and thought it was worth trying. It’s been a mixed experience. I did feel a bit more energetic but it didn’t have much effect on my weight loss. After a couple of weeks I thought I’d start a small diet as well as taking them, this helped a little bit and I lost a couple of pounds a week.
    I don’t think I’d buy them again as they just don’t seem to have any weight loss effect.

  2. Marie Graveson says:

    I was taking the pills daily and I also tried to eat less but also I didn’t eat after 7pm every day. This was tough but I found I was losing a pound a day so I was pretty happy with it all in all! I’d happily recommend it.

  3. Holly says:

    I’m still not convinced by these pills even though I’m now on my second bottle. I’m quite healthy anyway and I do a bit of exercise, just wanted help getting rid of the weight I put on on holiday. So far they’ve not really helped much and I don’t think I’ll be carrying on after this second bottle.
    Maybe it would work better for people with more weight to lose?

  4. Lorna Michaels says:

    I was sceptical about these pills before I got them, like many people I think. However I’m now a week into taking them and I’ve been happily proved wrong. I’m pretty sure I’ve lost weight already although I haven’t wanted to weight myself yet.
    I’ve certainly noticed my appetite isn’t what it used to be, I don’t go looking for snacks in the evening any more.

    • ana says:

      Hi Lorna, congrats on your weight loss. I was just wondering whether you experienced any side effects? I lost a small bit of weight but experienced some really bad side effects and overall I was quite disappointed.

  5. Glenda Bridger says:

    I’m 56 and I’ve tried numerous weight loss pills to try and lose weight. These were the first ones to actually work and I can happily say I lost 7 pounds within three weeks.
    I would recommend these pills to anyone who wants to lose weight as they worked wonders for me and I’ll be buying more!

    • lacey says:

      hi Glenda, I am thinking about taking these pills but I’m not convinced. Did you diet or do much exercise while you took them? Do you think they really were effective?

  6. Hillary Chamberlain says:

    I felt the difference almost immediately after taking Meratol. I noticed my appetite was not as big quite quickly and I’ve been impressed on the whole! I would happily recommend, you’ll feel the benefit straight away!

  7. Greg Potter says:

    I don’t know what happened with these pills. I had read a lot of good reviews about them but they did completely the opposite for me. I only had about 7lbs to lose but after taking them for about two weeks I found myself really craving carbs.
    I had a real massive urge for carbs and consequently after two weeks I had actually put on 5lbs!! I don’t know if I was doing anything wrong but they just did not work for me, at all.

  8. Pam says:

    Firstly, I found the customer service from this company to be very good. However the product just did not work for me.
    I couldn’t take the product as it recommended because it gave me really terrible feelings of nausea and heartburn, so bad I couldn’t really consume food. So I didn’t take as many of the pills as instructed, if you do maybe you could lose weight with the pills.
    It’s important to just keep eating healthily and do exercise to lose the weight and keep it off. If you use meratol as it is instructed you may lose weight but you might also experience bad side effects too.

  9. Elizabeth P says:

    Meratol seems to be working for me! I’ve had no side effects other than the weight loss so I would happily recommend it.
    It’s not been super fast weight loss, it’s been about 2 or 3 pounds per week but I’ve heard its not safe to lose weight too fast so I’m happy with that. Here’s hoping it continues.

    • kim says:

      I hope you realise how lucky you are not to have experienced any side effects. I suffered from really bad headaches and stomach pains every time I took a tablet. I had to have a day off work because it was so bad one day. I wouldn’t dream of taking these again or recommending them to anyone.

  10. cam says:

    I’m a long term user of Meratol. I’ve been taking it on and off for about two years now but every time I do use it I see results. It’s great at getting me back in shape after I put on a little bit of weight. I wouldn’t use any other product, I’ve tried a couple of others and they’ve not been as good. I’d recommend meratol to anyone.

    • maxine says:

      Hi Cam, just wondering it doesn’t sound like you have a lot of weight to lose each time you take it? I’ve got quite a bit to lose so I’m just wondering whether it works as well for people with lots to lose? You seem to like meratol so I thought you’d be a good person to ask

  11. sharon E says:

    I had a very disappointing time with meratol. I didn’t see any kind of weight loss and it seemed to give me really bad headaches and stomach pains. I also had to visit the toilet more than I usually do.
    All in all meratol was very poor, I find it hard to believe these work for anyone after I found them very disruptive and basically useless.

  12. christina says:

    I really felt the burn taking these tablets! Sadly it wasn’t the burning of calories. I took one and straight away felt it dissolving and burning. It left me suffering from heartburn and indigestion for a day after that!
    This happened almost every time I took a tablet. It was so bad and it wouldn’t go no matter how many heartburn tablets I took.
    I couldn’t believe pills could do this and I really wouldn’t recommend them. I was shocked at the reaction I had.

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