Clavitanol XLS Medical Max Reviews

Clavitanol: Results, What To Expect, Side-effects

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Clavitanol has been on the market since 2014, it was registered by InQpharm Europe Limited. It is a patented natural complex which reduces the breakdown and absorption of these nutrients into calories.

Clavitanol Overview

Prescription drug: No

Designed For: Blocking fats

Company Production: InQpharm Europe Limited

Commercial Name: XLS Medical

Made in: Germany

Date of Production: 2014

Scientific Evidence Behind Clavitanol

Clavitanol is promoted under XLS Medical and this brand published a claimed study that has been conducted with results of successful amounts of weight loss almost 4x the placebo group.

However, there is no trace of this study from an independent organization to confirm this claim. There was another study published on but the whole website was removed completely for no reason.

Thus, I can’t confirm of any scientific evidence to backup Clavitanol claims.

What Are Clavitanol Claims?

According to the commercial brand XLS Medical Max, you will lose 3x the weight if compared with dieting alone.

The idea behind Clavitanol is that it blocks sugar absorption. Thus, many review sites categorized this drug under fat blockers.

There have been several debates about the efficiency of the substance. Thus, will clarify based on evidence provided and what are better alternatives to Clavitanol.

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Clavitanol Advertised Benefits

  • Declines in fat absorption & carbs.
  • Enhance your weight loss 3x faster.

How Does It Work? 

In most weight gain situations, you gain weight because the number of calories consumed are higher than the number of calories burned. Those extra calories are usually stored as fats.

There are two ways you can overcome this issue:

1- Increase your body’s burning rate to the number of calories consumed. This is usually done through very potent fat burners along with physical activity.

2- Decrease the number of calories consumed through controlling your food cravings via appetite suppressors.

3- You can block the body from converting calories to fats, by preventing normal nutrient absorption.

The first 2 methods have a major amount of scientific-evidence and recommendation rate among nutritionists.

The 3rd concept is not much recommended by nutritionists and physicians, simply because there is a high chance it will cause mal-nutrition and even make you lose your muscle mass.

Clavitanol promises fat blocking and not absorbing nutrients and instead discards it as it is.

Actually, any fat-blocker on the market including Clavitanol works by one of two ways:

  1. They can directly target enzymes that are responsible for food absorption and indirectly interferes with the digestion process by focusing on just the digestive enzymes.
  2. The fat blocker can straight-away bind with the fat-molecule from the food disallowing it from being absorbed by the body. Thus, the body will automatically discard it and in this case, it is a direct interference with the digestion process.

The Body Vs The Blocking Action

Clavitanol does the “blocking enzymes” action as it makes certain digestive enzymes to be less effective and force it to not do its job properly. This can lead to a terrible outcome on the long term and how your body functions as a whole. [source]

Thus, it’s not recommended to be used in long term time-frame.

Here are the digestive enzymes that get affected:

Nutrient Fat Carbohydrate Protein
Digestive Enzyme Lipase Amylase Proteases / Peptidases

Clavitanol Ingredients

Clavitanol is the substance that is responsible for manipulating enzyme activities such as alpha-amylase, peptidase, and lipase.

The thing about Clavitanol is that it is used as the main ingredient for many fat blockers on the market. And XLS Medical Max is one of the most common diet pills that has used Clavitanol.

The outcome is that all reduced activity of the digestive enzymes leads to undigested particles. And thus, most food particles don’t get digested and exerted out of the body.

However, Clavitanol in itself is not exactly known what kind of proprietary blends it consists and is unspecified amounts and types.

Most big companies such as InQpharm does that, as it’s their secret recipe to weight loss. If everything revealed in exact amounts many companies will copycat their substance.

Clavitanol Alternatives (With Less Side-effects)

Without a doubt, the side-effects you’ll be dealing with Clavitanol is bloating, passing gas, occasional leakage and digestive problems.

Many people who have used Clavitanol didn’t tolerate the adverse effects and had to stop taking it.

Based on a recent study done in 2015, the placebo group lost .83 kgs compared to Clavitanol group who lost 3.29 kgs in 12-week period.

Although this is considered quite low compared to a competitive weight loss pill called PhenQ which gave an average of 6.9 kgs in the 12-week period.

Comparison Between Clavitanol & PhenQ

Product Clavitanol

Clavitanol XLS Medical Max


PhenQ Phentermine

How it Works It manipulates your digestion enzymes by halting their production and efficiency and making food particles exerted without being digested. It’s a thermogenic agent that raises internal body temperature and burn stored fats to energy. It also contains fibre-based ingredients which is known to help curb your appetite and delay the onset of hunger. The less time you spend eating, the less food you eat
Ingredients Clavitanol is the main substance that consists of unknown property blends. And there is no certainty that its 100% synthetic or 100% natural. There are the following main ingredients (100% natural):

– Caffeine (Improves thermogenesis)

– Capsimax Powder (Burns fat)

– Nopal (Appetite suppressant)

– Chromium Picolinate (Controlling carb and sugar cravings)

– Calcium Carbonate (Helps in maintaining optimal weight)

– L-Carnatine Furmarate (Changes the fats into energy)


Contraindications – Advanced arteriosclerosis, cardiovascular disease, moderate to severe hypertension, hyperthyroidism, known hypersensitivity or idiosyncrasy to the sympathomimetic amines, glaucoma.

– Digestion problems.

– Patients with a history of drug abuse.

– During or within 14 days following the administration of monoamine oxidase inhibitors (hypertensive crises may result).


Women who are pregnant or nursing should avoid using this product. This product is not meant to be consumed by children. If you have a pre-existing health problem, you may wish to speak with your health care provider before taking this product.
Side-effects Phentermine may cause serious side effects.

Can disrubt your whole digestive system.

Anal oily leakage and embarrassing stains in pants.

Can’t be used for long-term.


It’s unlikely you’ll be dealing with side-effects simply because it’s 100% natural-based ingredients and non-synthetic.


However, it contains stimulants like caffeine so you might experience:

Sudden Energy boost.

Insomnia if u take it before you sleep, thus must avoid taking it in the evening time.

Prescription Not-Required Not-Required
Ordering Online Not available anymore Available
User Reviews Many complained from side-effects Positive Reviews (some even posted their before and after pictures)
Price £40 (For one-month dosage) (plus shipping fees) £45.95 (For one-month dosage) **Free Shipping** **There are ongoing offers on the official website**
Official Website Not Sold Online

Visit Official Website

Clavitanol Customer Feedback

Customers have given Clavitanol a mix of reviews along the years of usage.

Here is the average reviews on


A few average customer comments read:

1.0 out of 5 stars
Waste of money – 19 June 2017
Did absolutely nothing apart from put me out of pocket!! Would not buy ever again or recommend to anyone.
3.0 out of 5 stars
It’s weight loss pills, your gut instinct is probably right.- 15 December 2018

They are very expensive, I’m not sure whether they help with weight loss. The tablets are fairly large but that okay, scientifically it’s easier to swallow larger pills than smaller! They might well be a bottle of lies, who knows, who can tell. It’s weight loss pills, your gut instinct is probably right.


2.0 out of 5 stars
Didnt work for me – 23 June 2016
I didn’t find this worked for me and gave me a horrible bloated feeling but I guess these things work for some and not for others.

Side Effects and Health Issues

It’s been confirmed that if this is your first time to use Clavitanol you’ll experience intense intestinal gas in the first week.

However, what you’ll deal with most of the time is stomach discomfort and loose stools.

It’s common to have explosive diarrhoea and leaks, which is quite embarrassing if you are at work or outdoors.

Thus, many recommend to use it at home, which can be very unpractical for many users.

Here is a user wrote her experience on Amazon:

User Reviews on XLS Medical Max

reviews on Clavitanol

Should You Buy Clavitanol (XLS Medical)?

If you are ok with the mentioned side-effects or your lifestyle affords to have explosive diarrhoea & gaseous without embarrassment. Then you should expect results 3 – 4 kgs every 12 weeks.

However, if you are ok with spending extra on a high-quality diet pill, then better go with PhenQ, it doesn’t have such side-effects and you’ll lose around 6-7 kgs every 12 weeks.


Clavitanol does not have a money back guarantee.

My Conclusion

I haven’t tried Clavitanol myself but from customer reviews & research I wouldn’t suggest using it. The cons outweigh the benefits. Plus, I have searched all over the web to see at least what kind of ingredients involved in this product and with no results.

The property blends are made secret from the production company.

I would never recommend a diet pill without knowing exactly what kind of ingredients it contains (synthetic or natural or a mix).

Although Clavitanol is not sold directly under this name and mainly sold under XLS Medical Max Strength, you might find it used in other supplements as well.

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