Updated: 04/18/2017 - Site operated by Leptigen

Fat Killer Review - Does This Diet Pill Actually Work?

  • 86 User Comments
  • Rating: 3.6. From 67 votes.
By Summer Banks Apr 01, 2017

No joke – over 50% of diet products simply don’t work. So what about Fat Killer? There’s been plenty of chatter about these pills, so we wrote a comprehensive review, examining the ingredients, side effects, customer care and clinical studies. Plus we took a look at numerous dieter comments found all over the web. Finally, we compacted the data we found to give you the information you need.

Fat Killer Readers: Click here to find out why we're giving away samples of our product, Leptigen.

What is Fat Killer?

To begin with, Fat Killer is a weight-loss supplement. The ingredients are garcinia cambogia, African mango, green coffee bean, guarana, L-carnitine, white willow bark, green tea extract and Korean ginseng. This “slimming pill” claims to burn off fat three times faster and target problem areas such as the midsection. It should be taken daily, as two capsules, for maximum results. No specific diet or exercise plan is mentioned.

Fat Killer has been around since 2013, and it does contain some natural ingredients. Multiple third-party retailers sell the supplement. We like the use of some natural ingredients and that we found a few positive comments, but read on…

Cost of Fat Killer – “Expensive?”

Our first consideration with Fat Killer ingredients was the price. “It looks like the actual cost of Fat Killer diet pills, after shipping and handling, is about $100 per bottle, which is a one-month supply. This is certainly not affordable for many people trying to lose weight,” says our Research Editor.

According to one dieter, “Too expensive for me, and I can’t even tell if it works.”

Another user said, “Better off just eating less. It’s a lot cheaper.”

Lack of Real Results – “No Loss”

From what we gathered, there are quite a few complaints about dieters simply seeing no results. One customer stated, “Are you sure this pill actually works??”

“Don’t see the weight loss! It’s been four weeks now!,” said another dieter.

Our research has revealed if there is some individual facet of a diet pill or fat-loss program that is very concerning (serious side effects, high price, no real science) the chances of success is quite minimal. Therefore, if Fat Killer pills do not yield real weight-loss results in numerous people, this could be a big problem.

The Science – “Clinically Proven?”

There is no real clinical study presented for Fat Killer pills. In fact, we could not even locate an official website, which means this weight-loss product has likely been discontinued. Here at DietSpotlight, we need to see actual science to support the diet supplement’s claims. When no dedicated information is available, there’s no reason for dieters to try this one on for size.

The Bottom Line – Does Fat Killer Work?

Well now, what’s the final take on this one ladies and gentlemen? It’s important to be cautious when shopping around for a weight-loss product. The reality is many of them are not backed by any real research. This appears to be the case with Fat Killer pills. We also noticed that this aid contains fad diet ingredients such as garcinia cambogia. Moreover, there is no official website for Fat Killer.

Those who really need to shed more pounds and get into shape faster, we recommend you select a diet supplement that is both affordable and backed by actual clinical studies.

Among the best products we’ve seen this year is one called Leptigen. It contains a unique blend of four key ingredients, which have been shown in documented scientific research to help kick-start metabolism and encourage more fat loss. We have not discovered any talk of negative side effects and user reviews around the internet show people are seeing excellent results.

Also, the formulators of Leptigen are so very sure of their product they’re offering a Special Trial Offer, which is a good sign.

Previous Fat Killer Review (Updated May 5, 2014):

What You Should Know

Fat Killer is a product that is designed to do just what the name suggests – Kill Fat. The manufactures claim that Fat Killer will rapidly help you lose weight around your midsection.

While some doses of Fat Killer are manufactured in the U.S., they are not sold here. This drug is primarily being used throughout Europe. The FDA has failed to certify the product.

The manufacturers of Fat Killer claim that their product is able to accomplish their claims due to the use of thermo genetics. By raising body metabolism levels, the product is able to speed up weight lose. The product tries to not focus so much on heavy dieting as it does boosting the metabolism and eating better.

List of Ingredients

The ingredients list on the back of the bottle states that Fat Killer contains LCarnitine, Korean Ginseng, Green Tea, Guarana, White Willow Bark, and Vitamin B5. According to their online site, this appears to be the complete listing.

Product Features

With the purchase of Fat Killer, the manufactures include a nutrition guide. Also, there is a downloadable book online with tips on healthy living and how to use the dieting aid correctly.

Fat Killer uses the idea of thermo genesis which is the method of boosting the metabolism and other bodily processes. This helps your body work harder, burning more fat instead of hanging onto it.


  • Fat Killer provides all customers with a full money back guarantee if they are not fully satisfied with their product.
  • The manufacturers include a health and nutrition guide with their weight-loss supplement.
  • Fat Killer uses healthy ingredients and thermo genetic formulas to aid in weight-loss.


  • Fat Killer is not certified by the FDA.
  • Currently, Fat Killer is only being sold in Europe, it is not available in the States.
  • While the manufactures do include a nutrition’s guide, their product is relatively expensive.
  • The company is not currently running any type of promotional ad for their product.
  • The manufacturers website fails to show before and after pictures of satisfied customers of Fat Killer.


Fat Killer, according to the manufactures, will help you lose weight around your midsection in a safe and healthy way. They claim that it has been proven that the use of thermo genetics is one of the healthiest ways in which to lose weight quickly and still keep the weight off. The manufactures claim that Fat Killer is not just a weight-loss supplement, it is a change in life.

While Fat Killer appears to be a healthy alternative to many of the dieting products currently on the market, the fact that it is not available in the States is a downside.

Fat Killer Questions & Answers:

If you’re looking to learn more details, check out these Fat Killer FAQ.

What are the side effects of Fat Killer?

Fat Killer side effects may include nausea, insomnia, anxiety, increased heart rate, and increased blood pressure, as reported by some users.

What are the ingredients in Fat Killer?

Fat Killer ingredients are vitamin B5, garcinia cambogia, African mango, green coffee bean, guarana, L-carnitine, white willow bark, green tea extract and Korean ginseng.

Does Fat Killer Work?

The single ingredient that caught our attention was guarana. This is a source of caffeine and that stimulant has been tested and shown to help boost energy. There is also a connection with increased metabolism. The rest of the formula is not so strongly supported.

Combine a healthy diet and exercise routine with a supplement made with clinically tested ingredients, such as Leptigen. You may be more likely to see results.

How much does Fat Killer cost?

Fat Killer doesn’t appear to have an official website with pricing information available. The best we can determine with our research is to expect around $100 a bottle for a 30 day supply..

How should I take Fat Killer?

Take two capsules once a day.

Can I take Fat Killer if I have a health condition?

Consult with your doctor before starting this or any other supplement. It’s high in stimulants, so it could affect blood pressure and heart rate. It may also interact with certain prescription medications. Do not use if pregnant, nursing, or under the age of 18.

What do users like about Fat Killer?

Many users liked how simple it was to just take the supplement and go.

What do users NOT like about Fat Killer?

Many users complained about the price, side effects, and seeing no real weight-loss results.

How do I contact the Fat Killer customer service department?

Due to the lack of an official website, you are advised to contact customer service for the seller where you purchased the product.

Do you know of any special deals or discounts on Fat Killer?

Right now, we are unable to find any kind of discounts or special deals on Fat Killer. If you’re looking for something else, you can take advantage of Leptigen’s Special Trial Offer, which is just the cost of shipping and handling. Click here to give it a try.

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Dietspotlight Author
About the Author:

Summer Banks, a content strategist at Leptigen, has researched over 5000 products in the past 10 years. She has years of nursing training, experience as a manager responsible for 15 supplement brands, and completed coursework on Food and Nutrition from Stanford University. full bio.

Rating: 3.6. From 67 votes.
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User Comments

86 Comments on "Fat Killer Review"


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I used fat killer for only 10 days it raise my blood pressure .so I stop it


I don’t go to gym and I take 2 fat killer pills at day its working or not?

Hello. All users are different and can experience different weight-loss results.


can we eat every thing if we ae useing this prodect .for example chiken beef manat . what we can not eat if we taking this pill

Hi! For detailed product and usage instructions, please refer to the Fat Killer official website for more information.

daniyal Azmi

I want to buy fat killer but i confused do work it anyone useing this product please tell me




They are a crazy company I ordered 1kpl they sent 4 and when I say it’s not know and sent back they try to Rick me and send new bill after 1 month 291euro.I sent them an official complain and I’m telling everyone else careful with them.

Jana singh

Same happened with me.


omg same here ** i tried to send it back but then i got a letter saying they would sue me if i don’t pay it **

farida m mohamed

i want to try ,but how can i get,am from kenya.


Hi Farida! For more information on where to purchase this product, please refer to the Fat Killer official website.

Your NamRahma e

How much cost?


$ 100 dollars per bottle with shipping and carefull handeling


Hi! For more information on the price of this product, please refer to the Fat Killer official website.


Hi Kaur. Please refer to the Fat Killer official website for more information on how to cancel your subscription.


ICH HAB DAS EIN MALL BESTELT !!! Und hab 2 mall kriegt, hab zurück gesicht und trozdem muss ich noch zahlen . Das ist ei schweinerei . So was geht nicht !!! Machen Sie was ich will nicht mehr für nix zahlen .



John Magne

I orded fat killer but the customs in my country has stopped my order in customs.
Customs say this is not legal to import to my country.


but did you pay the bill you got later?


Its been more than a week, am taking this medicine . But i found no result in me till now.
How much time i shall wait more to reduce extra fat

Hello. All users are different and can experience different weight-loss results, but exercise in conjunction with a healthy diet and supplements have shown to help with weight-loss.


The best way to loose weight is to eat less every time you eat and always drink water before meals not after meals….I ve been trying this and I didn’t even gained a pound. I am from India

Your Name

I get those stupid pills every month! and I didn’t even order them! And ofcourse bills from over the 100 euros… what the hell am I supposed to do with this? they don’t answer my e-mails. And I would like to cancel this. Killer.


The same thing happend to me.I only wanted to try it and I got the Fat Killer three times allready.I sent an Email at FatKiller Support and succesfully got myself out for further receiving the product.Apparently,you are getting it automaticly if you don’t cancel your order account.There are a few stepps to follow and your buying account will be frozen.You don’t get it anymore.


If you don t answer me how to return your product I will go to the police in Austria. I m not paying anything to you.


hi claudia i am too from austria even i got this fatkiller and extreme dragon without order i just see in internet and they send me what you did with this packet please let me know because i just go to the police and they told me to return back this item

Candace (Editor)

Hi, we are not affiliated with this company. There seems to be a lack of information on this company. For cancelling information we recommend contacted the person from whom you originally bought this product.

Dutnath Sahu

Any side effects in Denmark Fat killer

Stephen (Editor)

Hi, Dutnath. Some dieters report mild nausea, insomnia, anxiety, increased heart rate among others. More info in the Q&A section of this review.


I don t know if it works. they are no contacts, no pfone. and apears to me like a Virus. the product doesn t have prospect. it is not normal that some pills have no prospect. what did you do, those who order?


Hi i did not oder fat killer what should i do

Hi. For product issues please refer to the Fat Killer official website to contact their customer service department.

Stephen (Editor)

You would have to contact the seller you originally bought from.

Kaur sandeep

Please not send me .I am no ask you send me fat killer
I have no money to pay .please.I send you back.fat killer.please

Stephen (Editor)

Hi, Kaur. Sorry, we are not affiliated with Fat Killer. You will have to contact the seller you purchased from.


hello , I order Fat killer in Germany,I buy with PayPal Weiting like 2 weeks no send me nothing.How much time I must weight? I spoke PayPal money back. Bad

Devon (Editor)

It can take some companies up to two weeks for shipping (longer if you are outside the country of manufacture).

Ande haymanot Leteyesus

I don”t want more, please stop sending me more i don”t even received your product and you want me to pay money.And i want to know how to pay because i received a bill of 198kr.

Stephen (Editor)

You have to contact the company to unsubscribe you.