Rapid Slim Review – Do These Fat Burners Actually Work?

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By Leslie Waterson

Reviewed by Juliana Tamayo, MS, RDN - Last Updated


Keto diets are a hot new dieting fad meant to burn fat. The point of keto diets is to lower your carbohydrate intake so your body has to resort to burning fat for energy. Over time you train your body to immediately resort to burning fat to keep your weight down. 

Keto diets are extremely popular and there is some pretty good evidence showing they are effective for short to mid-term weight loss. Keto can be hard to start though as the initial carb reduction can make you feel without energy and lethargic. You can learn more about the Keto diet in our ultimate guide to the ketogenic diet.

Rapid Slim is a fat burning supplement that is meant to help your body burn fat for energy. Rapid Slim is marketed as something that can help you on your keto diet and keep energy levels high while facilitating fat burn. 

There are tons of fat burning weight loss supplements on the market, like Slimvance and Skald. It can be hard to know which is right for you; lots of fat burning supplements make all kinds of claims and many do not live up to scrutiny. So we are going to take a look at Rapid Slim and talk about its pros, cons, ingredients, where you can find it, and if it is worth buying. 

Rapid Slim Fat-Burn Pills Diet

What Is Rapid Slim?

Rapid Slim Fat-Burn Pills Product

Rapid Slim is a fat burning supplement in a convenient pill form. Each capsule of Rapid Slim contains an advanced formula that promotes fat burn and gives you more natural energy in the day. It markets itself as a good companion to keto diets and can counteract the feelings of grogginess and lethargy that can accompany cutting your carbohydrate intake. Rapid also claims to improve mental focus and reduce mental fogginess.  

The natural ingredients in Rapid Slim are designed to help your body into a state of ketosis where fat is targeted for consumption instead of carbohydrates. The result is you burn more visceral fat, especially the fat located in the abdominal cavity. 

It is important to keep in mind that Rapid Slim is not a magic weight loss pill. It needs to be taken in tandem with a low-carb diet to have maximum effects. If you take Rapid Slim alone, it won’t do much. But combine it with an existing low-carb diet, it can help you burn fat more effectively and counteract the negatives of keto diets. 

Rapid slim has been featured on several popular television programs and has been featured in several notable magazines, including Women’s Health. The company offers a 100% money-back guarantee so you can get your full purchase refunded if you are not impressed. Rapid Slim claims to be 100% clinically proven


  • Natural ingredients
  • Easy and convenient
  • Improves mental clarity
  • Combat potential negative effects of keto diets


  • Unknown ingredients
  • Might cause nausea and upset stomach
  • Some ingredients have known negative side effects when consumed in large quantities

Who Makes Rapid Slim?

Rapid Slim is made by Rapid Slim (go figure), a fitness nutrition company. They have been pretty active for a while and have made quite the presence for themselves online. The company’s webpage is pretty simple but there are a lot of remarks about them on social media and a Google search for “Rapid Slim” brings back tons of results from big-name publishers.

Unfortunately, we were not able to find much information about the history of Rapid slim or who the founders/creators are. We found a few screenshots from apparent headline claiming the product was featured on the popular TV show Shark Tank, but these images are likely fake and are a marketing scam. 

We did find a BBB profile for the company but they have very few reviews and all of the negative. Most of the reviews are complaining about the company’s billing/shipping practices, not over the product itself. 

How Does Rapid Slim Work?

Rapid Slim Fat-Burn Pills Keto Diet

Rapid Slim works by using substances that promote fat burn and keep energy levels high. As we said earlier, Rapid Slim is meant to be taken in conjunction with following a low-carb diet and is not meant to be taken alone. Rapid Slim contains a ton of natural ingredients that are believed to promote and regulate the body’s metabolism. Rapid slim puts your body in a state where it burns more fat instead of carbs. This induced state is called ketosis.  

Ingredients In Rapid Slim

Rapid Slim Fat-Burn Pills

Rapid Slim contains a handful of ingredients that are commonly used in nutritional supplements.

  • Hoodia Gordonii: Hoodia Gordonii is a plant extract that can suppress the appetite. Nutritionists sometimes advise patients struggling with weight loss to take Hoodia Gordonii to manage cravings. Hoodia Gordonii has been used as a medicine for a long time. 
  • Cissus Quadrangularis extract: CQ extract is sometimes used to treat obesity and is often used by bodybuilders as an alternative to anabolic steroids. 
  • Soy albumin extract: Soy albumin can be used to lower blood sugar levels and can stabilize metabolic rates. 
  • White willow extract: White willow is another plant extract that is used to suppress the appetite and control food cravings. 
  • Quercetin dihydrate: QD is a known anti-inflammatory agent and mitigates allergies and helps burn body fat. 

Safety And Side Effects

No ingredients in Rapid Slim are known to have negative side effects and are not known to interact with common medications. You should talk to your doctor before taking Rapid Slim if you are taking medication, pregnant, or breastfeeding. 

Where To Buy And Cost

You can buy Rapid Slim directly from the product website or from Amazon. Rapid Slim does not seem to be available in physical retail stores at this time. A 60-capsule supply of Rapid Slim costs $59.99, which is pretty expensive for a fat burning supplement.

Rapid Slim: Worth It Or Not?

Rapid Slim seems pretty popular, but it’s hard to tell if the weight loss is due to taking the pills or just from the low-carb diet. They are pretty expensive though and the company seems to have questionable billing practices. We would say that there are better keto supplements you can buy so only try Rapid Slim if you have already tried alternatives. 

Overall Rating:
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Leslie Waterson

Leslie has been passionately involved in the health and fitness industries for over a decade. She is constantly reviewing the latest scientific research and studies in order to take a research-backed approach to lifestyle optimization. Her main areas of interest include nutrition and supplementation. Leslie shares her findings on Fitness Clone to help other health enthusiasts choose the products and routines that will help them achieve their goals.

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