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Best Fat Burners [2021 Updated Review] – Best (4) Products

“Weight loss” is not an easy task, requires perseverance, dedication and great mental strength. Actually, not always a positive result comes out of this tough effort.

In the majority of cases there are certain things not going well. As a result, any person involved is disappointed and bored. Finally, you give up.

However, there must be a way you could lose weight securely and effectively. The next question is how?

Here is a simple answer. Help is necessary to obtain successful results.

A supplement can provide help and this is why the market has hundreds of slimming and fat loss supplements. The need of something special working along with the process by providing a special diet to lose weight and to help in this painful and at the same time demanding process is valuable.

Nevertheless, it sounds quite easy to say it but presents tremendous difficulties in practice, to search and identify valuable products among thousands of fake or even dangerous supplements.

Our team knows and understands this difficulty and comes to help our readers by summarizing all-important information in just one article.  

We believe that in this way it becomes easier to start your effort and to ensure results.

Below we list the 4 Best Fat Burner Supplements of 2021 discussing each one independently for offering a complete picture of each product.

Here is the List of The Best Fat Burner Supplements of 2021

No.1: PhenQ

No.2: LeanBean

No.3: Instant Knockout

No.4: Trimtone

Prior to our discussion, please note that the 4 Fat Burners listed and discussed present a number of important features as:

  • natural composition
  • legally (OTC: Over The Counter)
  • fast action & high efficiency
  • non-prescription
  • safe for organism
  • made by companies complying with all safety regulations
  • first in the preference of the buying public

So, here are the products selected in one by one presentation.

No.1: PhenQ

Click here to Get PhenQ from Official Website

PhenQ is a 2-phase slimming / fat burner, meaning that provides

A weight loss product preventing the formation of new fat cells in the body and fighting the existing fat cells of various fat stores, can only lead you to success.

Another very important advantage of this supplement is the way it works, due to its special (and enhanced) composition.

Its ingredients help you suppress your appetite (in general), gain a feeling of fullness from your meals in an easier way and avoid meaningless snacks (which are mainly “empty calories” of junk foods).

PhenQ also contains calorific ingredients enhancing the metabolic process, increasing fat loss on the body and strengthening energy storage.

An organism, not feeling tired and exhausted, or hungry and “unsatisfied”, makes it easier to achieve its goal.

PhenQ is a legal high quality supplement, manufactured in the United States and United Kingdom, in premises places tested and holding the GMP and FDA certifications.

This is highly important as the production mode of a supplement could give an indication for the level of help a product could offer.

The question if a selected supplement works or not, may be answered by looking at the list of ingredients contained.

The PhenQ supplement definitely provides results as verified by its ingredients.


  • Calcium Carbonate | 625 mg
  • Caffeine Anhydrous | 150 mg
  • L-Carnitine Furmarate | 142.5 mg
  • α-Lacys Reset® | 25 mg
  • Nopal | 20 mg
  • Magnesium Stearate | 10 mg
  • Capsicum Extract | 8 mg
  • Sipernate 225 (silicon dioxide) | 5 mg
  • Niacin Powder | 4.5 mg
  • Piperine Extract | 3 mg
  • Chromium Picolinate | 80 mcg


The PhenQ slimming / fat loss pill (our 1st choice for the 4 Best Fat Burners of 2020) achieves targeted weight loss.

For the simple reason that works as 5 different weight loss pills in one.

5 different actions, 5 different ways to “attack” the fat and eliminate it

  • fat burning
  • suppression of appetite
  • suppression of fat cell production
  • increase the available energy
  • strengthening the psychology / mood


  • may cause side effects (especially in people with caffeine sensitivity)

Side effects:

No other side effects related to the use of the PhenQ supplement reported to date. Some people with caffeine sensitivity reported sleep disturbances and nervousness, however, by discontinuing the administration of the supplement the problem resolves completely and almost immediately.

Anyone trying PhenQ for the first time should carefully read the instructions for use, the contraindications, the way to administer the supplement, as well as (and this is also a very important), the cases in which medical consent is required for its use.

People with intolerances, allergies, health problems, persons taking medication, women who are pregnant or breastfeeding, minors and people with severe heredity in various diseases, it is best to consult a doctor, prior to its administration.

Place – price of Purchase

Purchase of PhenQ is simple and safe via its official website (

  • 1 package USD69.95 (from original price USD79.95)
  • 2 packages + 1 package FREE USD139.00 (from original price USD239.85)
  • 3 packs + 2 packs FREE + 1 pack Advana Cleanse FREE USD189.95 (from the original price USD 399.75)

Click here to Visit the Official Website

No.2: LeanBean

Click here to Get Leanbean from the Official Website

LeanBean is a clearly “feminine” product, a fat burning and weight loss supplement of great potential.

Manufactured and sold by a legal and reliable company (Ultimate Life LTD), ensuring quality / safety / results to its customers.

A product especially for women, studied and created on very specific requirements of the female organism.

  • hormonal changes
  • genetic factors (DNA)
  • physique
  • female psychology
  • heredity

Furthermore, its composition is designed to meet the needs of every woman, regardless of age,  physical condition and weight loss objectives.


  • Vitamin B6 | 3.72 mg 240% of RDA
  • Vitamin B12 | 6.40 μg 256% of RDA
  • Chromium | 120 μg 300% of RDA
  • Green Coffee | 6000 mg
  • Acai Berry | 800 mg
  • Green Tea Extract (Maltodextrin) | 200 mg
  • Turmeric Powder | 200 mg
  • Glucomannan | 500 mg
  • Garcinia Cambogia | 400 mg
  • Cayenne Powder | 60 mg
  • Black Pepper | 20 mg
  • Raspberry Ketones | 8 mg


  • first choice of many models
  • exclusively for women
  • vegan / vegetarian friendly
  • no stimulants


  • no caloric performance / dose indicated
  • slightly lower rates for certain ingredients / dose

Side effects:

No side effects caused and is safe when the instructions and precautions suggested by the company are followed.

Place – Price of Purchase

Purchase possible via the official website of the product (

  • 1 package USD59.00 + FREE Home Training Guide
  • 2 packs USD118.00 + FREE Home Training Guide + FREE shipping to USA & UK
  • 3 packages + 1 package FREE USD118.00 + FREE Home Training Guide + FREE Healthy Eating guide + FREE worldwide shipping + 90 Day Money Back Guarantee (100% Satisfaction Guaranteed)

Click here to Visit the Official Website

No.3: Instant Knockout


Click here to Read more About Instant Knockout

This is a “new generation” fat burner, a nutritional supplement originally created for male athletes. In fact, serious athletes such as wrestling athletes, boxers, weightlifters and bodybuilding athletes, athletes using their body weight for their classification.

Instant Knockout is now aiming at women as well and at people not being professionals in the field of sports, but love their body and wish to give it a firm and ribbed look.

This pill will help you “dry out” the fat and increase your muscle mass.

Many persons call it a “legal steroid” as its action is similar to that of an anabolic.

  • increases the available energy
  • maximizes fat dissolution
  • protects & strengthens lean muscle mass
  • gives endurance / physical strength / focus / enhanced athletic performance

Its secret lies in the 10 different and effective natural fat burners contained.

It is one of the favorite weight loss products (mainly for men).


All its ingredients are of natural origin and high quality. The composition of Instant Knockout has been finalized after many years of research and clinical trials on the reasons of fat deposition in the body, how to fight fat using certain ingredients and rates.

The company has also studied the types of fat in the human body, what affects this fat and how it can be fought (ingredients and rates).

Relying on the biology of the human body – the company of Instant Knockout – reached its final composition

  • Vitamin B6 | 5 mg
  • Vitamin B12 | 10 mcg
  • Zinc | 10 mg
  • GTF | Chrome 100 mcg
  • Green Tea Extract | 500 mg
  • Green Coffee extract | 100 mg
  • Cayenne Powder | 100 mg
  • Glucomannan | 500 mg
  • Caffeine Anhydrous | 350 mg
  • Stratto di pepe nero | 10 mg


  • 10 fat burners in 1 dietary supplement
  • ideal for men & women
  • ideal for different body types
  • professional results (preferred by professional athletes with high demands)


  • not suitable for use by vegetarians & vegans
  • high dose of stimulants (caffeine)

Side effects:

No reported side effects associated with using Instant Knockout to date.

The formula of its ingredients may be extremely strong (requires special care to follow the company’s instructions for the correct use of the preparation), but it is completely safe and 100% natural (no chemical additives), not causing:

  • side effects
  • addiction
  • hormonal disorders
  • toxicity
  • mood swings
  • infections

(as happens with all synthetic anabolic steroids)

Instant Knockout is an advanced legal steroid completely safe and effective.

However, attention is necessary on people with caffeine sensitivity. The high concentration of caffeine may cause discomfort in sensitive people.

Place – Price of Purchase

The supplement is available via the official website of the product (

  • 1 package USD59.99
  • 2 packages USD118.00 + FREE shipping in USA and UK
  • 3 packages + 1 package FREE + FREE shipping worldwide + Money Back Guarantee USD185.00

Click here to Visit the Official Website

No.4: Trimtone

Click here to Get Trimtone from the Official Website

This is another “female” product (bearing high sales worldwide), claiming to curb even the most persistent and increasing desire for food, while it controls cravings for junk.

Fights even the most stubborn local fat and ensures gradual ribbing of body.

Many women use it as an appetite suppressant and others as a Pre-Workout supplement, as provides significant amounts of energy enhancing the training process and “melting” the body fat.


  • Caffeine Anhydrous | 120 mg
  • Green Coffee (Arabica Coffee) (bean) Extract | 100 mg
  • Green Tea (Camellia Sinensis) (leaf) (standardized to 50% Polyphenols) | 100 mg
  • Glucomannan 90% (Amorphopallus Konjac) (root) Fiber | 100 mg
  • Grains of Paradise (Aframomum meleguata) (seed) (standardized to 12.5% ​​6-Paradol) | 40 mg


  • fat burning
  • prevents the formation of new fat cells
  • energy elevation
  • increased metabolic rate
  • suppression of appetite
  • psychological support
  • Pre-Workout reinforcement


  • not suitable for vegetarian / vegan diet
  • not suitable for use by diabetics

Side effects

It is 100% natural – safe and effective.

Caution is required in its use by people with health problems or by people who already taking other supplements or medications (medical consent required).

Place – price of Purchase

Easy and quick purchase via its website (

  • 1 package USD49.95 + shipping costs USD4.95
  • 2 packages + 1 package FREE USD99.90 + FREE shipping
  • 3 packs + 2 packs FREE USD149.85 + FREE shipping

Click here to Visit the Official Website

Frequent questions

Q: What are the fat burner supplements?

A: Fat burners (or lipotropic supplements) are products containing certain ingredients (natural or chemical) to enhance the burning of accumulated fat, reduce the deposition of new fat cells in the body and ultimately strengthen the energy storage.

Not all the products found in the market are legal, or effective. In fact, if you do not have a basic knowledge of chemistry and biology, it is difficult to identify (only from the composition on the package) whether a product is effective or even if dangerous for you and the functioning of your organism.

Q: Do they cause side effects?

A: Some products are dangerous while others are completely harmless and friendly to organism. Today we referred only to products of 100% natural composition not causing any side effects at all.

Nevertheless, attention is required to the instructions provided by the company regarding the respective supplement, as well as to the warnings about the groups of people who should have medical approval before taking it.

Q: Are these products effective?

A: A product of good and careful composition can really bring results, even on its own (i.e. with no change in diet or physical activity).

However, this clearly depends on the body weight, as well as on one’s general habits (amount of consumption eats – if what’s consumed is quality food or junk – and when / how often eats, but also on his/her exercise training).

A fat loss product – no doubt – gives the maximum results by following a healthy diet and exercise plan while taking it.

After all, the dramatic increase in energy provided by taking these supplements is an ideal help to enhance your athletic performance. The more you exercise – in addition to the fact of extra fat – you also increase the muscle mass. However, as you increase your muscle mass, you also increase your metabolic rate. This practically means that you will be able to consume even more food (always-healthy food with rich nutrients) without gaining weight.

Q: Which ingredients are the most powerful fat burners?

A: Nature can offer a variety of beneficial ingredients that – in one way or another – work in favor of health, wellness and acquisition of a ribbed body.

Below find some of them you may meet in several natural weight loss supplements (as we will only deal with this category … and not with chemical / synthetic preparations)

  • B vitamins
  • Carnitine
  • Methionine
  • Caffeine
  • Green Tea
  • Nopal cactus
  • Garcinia Cambogia
  • Cayenne Pepper
  • Apple cider vinegar
  • the various algae
  • Zinc
  • Glucomannan

These are just some of the ingredients in fat burners that you can look for in a variety of supplements. Usually you will not find them alone. Combined by other ingredients, such as:

  • detoxifying ingredients
  • diuretic ingredients
  • ingredients against fluid retention & bloating
  • ingredients that suppress appetite
  • mood-boosting ingredients / psychology
  • ingredients to boost energy
  • vitamins, minerals & amino acids that enhance health

Q: Why do so many fat burner products contain caffeine?

A: Caffeine is capable – as shown by a special study in the American Journal of Clinical Nutrition – of increasing the metabolic rate by up to 11%, while it can also increase fat burning in the body by as much as 29% to 30% (depending on the initial weight of each person, his body and in general his case including its daily habits).

Q: Are there stimulant-free fat burners?

A:  Surely there are, aiming primarily at people who are sensitive to stimulants (such as caffeine).

These supplements contain a different – equally effective – composition (with no stimulants), in order to avoid the side effects that stimulants cause to some people.

  • nervousness
  • insomnia
  • gastrointestinal disorders
  • difficulty in concentrating

Q: Which are the best fat burners with no stimulants (stimulant-free)? [In our case we are talking about caffeine-free fat burner.]

A: While PhenQ, Instant Knockout, and Trimtone contain caffeine (with Instant Knockout clearly containing the highest amount), LeanBean is a fat-free, caffeine-free (or other stimulant) product, suitable even for women who wish to use a product with no stimulants.

Q: Which is the best fat burner of 2021 and why?

A: According to our opinion, PhenQ is in the first place of the best natural fat burners with a clear difference (conclusion reached after a relevant research in the product information, and the buying public with the clear preference for this specific product).

PhenQ has a well-structured ingredient formula working in 5 different ways against obesity:

  • activates the metabolism & “breaks” the fat cells in the body
  • prevents the accumulation of new fat cells
  • suppresses appetite
  • increases the available energy
  • improves mood / psychology

Q: What are the best fat burners for local fat?

A: All 4 products mentioned above are very effective both in general reduction of body weight and elimination of local fat.

However, especially products for women (such as LeanBean and Trimtone) have an increased ability to fight local accumulation of fat, as it is particularly common in women (due to body structure, hormones and genetic predisposition).

Q: Which are the best fat burners used as Pre-Workouts?

A:  Any fat-burning product boosting available energy can be used as a pre-workout supplement.

Q: What is the best illegal fat burner?

A: A product being banned (for sale / purchase and use) is a fat burning synthetic product including:

  • ephedrine
  • caffeine
  • and aspirin

Even though there is a combination of 3 unique super-active fat burning ingredients and its use has helped many bodybuilders to “overcome” the obstacle of stubborn weight (which is never reduced beyond a certain point), the FDA considered it as inappropriate and dangerous for use, so applying a ban on its circulation.

The reason was mainly the presence of ephedrine in the formula of this fat burner.

Ephedrine (otherwise known as Ma Huang) is an active synthetic ingredient, a member of a broader category of sympathomimetic substances, working by stimulating the CNS (Central Nervous System), achieving:

  • increase in heart rate and blood pressure
  • bronchodilation
  • and vasoconstriction

Its use is legal only as a medication (prescription) to fight diseases such as asthma or allergic rhinitis, also used in case of cardiovascular disease.

In recent years, ephedrine has been used extensively for its fat burning / weight loss properties.

In the US, the use of ephedrine with no prescription has been banned since 2004 (ordered by the FDA), also detected (and prosecuted) with special anti-doping controls in various sports events (ordered by WADA and IOC).

Jenna Walter

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