Updated: 02/02/2016 - Sponsored by Leptigen

Best Slim Review - Does This Dietary Supplement Work? Are Side Effects and bad legal practices deal breakers?

Editor's Review: 3.5 / 5.0
Best Slim Review

I was interested by the mention of Best Slim the other day, and I decided to look into the supplement to see if it really works. I dug around looking for side effects. I looked at the ingredients and searched for clinical studies. I even tried to find customer service information. Then I tried to find a collection of user reviews online. Here is the condensed version of my findings.

EDITOR'S TIP: Substitute Best Slim with a proven fat burner such as Leptigen for better results.

What You Need To Know

Best Slim is a dietary supplement made with a blend of Cassia Seed Extract, Coicis Extract, Mulberry Leaf Extract, Lotus Leaf Extract, Mustard Extract, and Medical Amylum. Instructions are for the user to ingest 2 pills per day with meals. When taken consistently, Best Slim supposedly supports weight loss. One plus to this particular supplement is that it is easy to take when compared to shakes, mixes, and pills that require 3 or more servings per day.

Best Slim is sold through Best Group USA, and the supplement is supposedly “Made in the USA”–an ironic claim, seeing as the description below the product name is written in Vietnamese. The “About Us” page on the website is currently blank. In spite of our concerns, the pills seem easy to take and they aren’t as expensive as some other supplements we’ve come across. Don’t stop reading, though…

“No Ingredients Listed on the Website?”–Our First Concern

We found our ingredients list from an earlier published source on the product, but when we went to verify the list on the Best Group’s website, no ingredients were listed. “Under no circumstance should someone buy a supplement that doesn’t list its ingredients openly,” says our research editor. “Herbal supplements can be both helpful and harmful, and consumers need to know what’s inside.” The website certainly doesn’t have much to offer in the way of reassurance about their products.

The supplement costs about $35.00 for 60 capsules, which would be a month’s supply. If the ingredients list we found from another source is correct, that would be $35.00 worth of laxatives–as none of the listed ingredients directly support weight loss. Laxatives, of course, can be found for a much cheaper price. The real concern here, however, is that the website doesn’t even list ingredients.

Scroll below for one of the best products we’ve seen over the last year.

Bad Legal Standing–Another Concern

Upon searching the product online, we discovered an FDA safety alert for Best Slim. Apparently, the makers of Best Slim failed to list Sibutramine on the label, even though they included it in the ingredients of a previous release of the supplement. Sibutramine has become a banned ingredient because of the cardiovascular risk it presents; Best Slim was not only dealing dishonestly with customers, but it was also endangering them.

Best Slim with an expiration date through 2016 has been recalled, and Bestslim.net is no longer available. Although Advanced Best Slim is still available on the Best Group’s website, extreme caution is advised.

If even one element of a weight loss supplement is a little bit off, the chances of long-term success are pretty slim, and Best Slim has many. Whether it is an unwanted side effect, a sketchy ingredient list, or a lack of measurable results, customers are not likely to succeed if they can’t trust a supplement 100%.

What Does Science Have to Say About Best Slim?

Not surprisingly, there isn’t any science to back up Best Slim’s claims. In fact, it has the opposite effect–several of the ingredients have been proven to have a laxative effect rather than being involved in fat burning or metabolism. Furthermore, Sibutramine has been linked to severe heart and blood pressure irregularities. The most important issue at present, however, is that the ingredients are not listed on Best Group’s website. We at Diet Spotlight place a lot of value on scientific research, and supplements that ignore this aspect of consumer health altogether don’t rate very highly for us.

What Is the Bottom Line?

Is Best Slim worth a shot? In our opinion, the final verdict is fairly obvious: It’s difficult to trust a company that sneaks a banned substance–sibutramine, no less–into a supplement for mass sale across the country. Many people could have been endangered by this ingredient. Furthermore, the Best Group is not forthcoming about the current ingredient list on Advanced Best Slim, and none of the previous ingredients actually helps consumers lose weight. Lastly, the cost of $35.00 is not warranted for a laxative-based product.

If you need to burn fat or shed unwanted weight, we suggest looking for a product that is shown to aid weight loss and boost metabolism, rather than spending money on ingredients that won’t help you reach your goals.

One of the best supplements we’ve found in 2015 is one called Leptigen. It offers a proprietary blend of 4 ingredients that are clinically proven to both aid your metabolism and weight loss, and it doesn’t come with risk of harmful side effects. User reviews around the web are great too.

The makers of Leptigen are offering a special trial value right now, so there’s very little risk involved in giving it a try.

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GD Star Rating

How Does Best Slim Compare?

Previous Best Slim Review (Updated April 17, 2012):

What You Should Know

Click Here To See Our Highest Rated Review

Best Slim offers an official website and online ordering. The website is not as professional as major diet company websites, but it offers a bit of information on the product and contact information for CTV Best Group in Union City, GA. Best Slim is the only product sold on the website, but it looks like the site is set-up to carry multiple products.

We found it interesting that the ingredient list in Best Slim is identical to Beautiful Slim Body, a supplement we have reviewed in the past. The fact that two supplements contain the same ingredients leads us to believe the two are one in the same. It is simple to give a diet supplement a new label and a new name.

List of Ingredients

Cassia Seed Extract, Coicis Extract, Mulberry Leaf Extract, Lotus Leaf Extract, Mustard Extract, Medical Amylum.

Product Features

Cassia is the first ingredient on the label and likely the most concentrated. Cassia is another name for senna and senna is a laxative. Laxatives are sneaking into the weight loss world right and left, but there is no known weight loss benefit associated with cassia or other laxatives. The companies selling these supplements sell a lie. Laxatives cause increased bowel movements that may tip the scale for a few days. Soon after, the body will just produce more waste and the weight will return.

Coicis Extract is also known as Job’s Tears. Job’s Tears is a source of fiber. It also has antioxidant properties. The fiber will likely increase waste removal supporting the laxative effect of cassia seed.

None of the ingredients in Best Slim will increase metabolism or decrease appetite. The ingredients are included to calm the stomach and increase bowel movements. Dehydration and electrolyte imbalance could occur after a few days. Prolonged use is not advised.

See Our Featured


  • Ingredients for Best Slim are listed on the official website.
  • The supplement may help relieve occasional constipation.
  • Testimonials are listed on the official website.


  • Best Slim is identical to Beautiful Slim Body.
  • The price is higher than other laxatives.
  • Laxatives are not safe for long-term use.


We noticed immediately that Best Slim was being sold on a website created just for this supplement. We are not sure the history of the supplement, but we are pretty certain the company behind the website is not the manufacturer. Companies simply have to contact supplement formulators with an idea and an ingredient list. The formulator will create the supplement and wrap a label on the outside. Some formulators will even store and ship the product for a small fee. We believe the company behind Beautiful Slim Body is behind Best Slim.

3 User Reviews About Best Slim

Leave comments below
  • 1

    how & where to get this product


  • 2

    why do i get goosebums also sweeting but not lost any weight


  • 3

    Really worried because I’ve taken this product for a few weeks. Beautiful Slim Body was found to contain sibutramine (as stated by the FDA) and if best slim is the same product then I’m going to assume it also contains sibutramine…


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