Plenity Review – Does it Work for Weight Loss? (Updated)

Plenity Review - Does it Work?

Plenity Review: In this review, we’ll see if Plenity can reduce your appetite and improve fat loss, as well as how it compares to the current market-leading fat-burning supplements in terms of safety, effectiveness, and value for money.

At the moment, you can only get Plenity on its official website, assuming you qualify for it (explained in detail in the following sections).

Plenity costs $98 per bottle/30 servings. This is quite a steep price for a weight loss pill! The question is, what exactly does Plenity do?

In terms of benefits, Plenity is said to help you:

  • Reduce cravings
  • Control appetite and hunger
  • Increase fat burning within the body

Essentially, Plenity is designed to help you eat less so you can lose weight consistently over the long term. This obviously sounds good, but these benefits are nothing new. Many other diet pills on the market claim they can do the same thing! So, what makes Plenity any different?

For one, Plenity is an FDA-cleared diet aid. Additionally, the fact that only select groups of people can obtain Plenity adds to the marketing appeal of the product.

However, is Plenity really that effective for weight loss, or is the ‘exclusivity’ and the FDA-cleared label merely being used as a marketing trick? Is it better than some of the current best-reviewed weight loss supplements on the market today?

We set out to inspect Plenity’s formula and check it for ourselves to see if the company’s claims hold up. Starting with a short summary!

Plenity Simplified

Although we’ve found Plenity to have some positive things going for it, it’s a massive letdown overall. This might be presented as a “professional” fat loss pill, but the ingredient profile tells us another story.

Plenity is an overpriced, over-hyped weight loss product. It contains only 2 ingredients – cellulose and citric acid. Cellulose is a plant fiber with some evidence showing it promotes satiety. That is, if the dose is high enough. Since Plenity uses a proprietary blend, we can’t see the ingredient doses on the label. The other ingredient, citric acid, is untested and ineffective as far as weight loss goes.

For a pill that costs $98 per bottle, that looks disappointing. There are a number of ingredients that could’ve been added to Plenity’s formula to improve effectiveness. These include green tea extract, cayenne pepper, and a higher-quality source of fiber such as Glucomannan. Don’t let the company’s FDA claims and the product’s supposed exclusivity fool you. If you have problems losing weight, make sure to talk to a qualified professional first and foremost, and if you’re looking for an effective weight loss pill, we would do more research. There are definitely better options on the market today.


  • Features a studied appetite-suppressing ingredient
  • Cost-effective alternative to surgery
  • Stimulant-free


  • Linked to a number of gastrointestinal side effects
  • Lack of transparency with the proprietary blend
  • Slim formula with 2 ingredients, only one of which is proven by research to work
  • Steep price
  • Complicated to obtain

What fat burner supplements do we recommend?


Plenity Key Facts

Benefits: Promotes Satiety and Fullness, Helps Reduce Calorie Intake
Ingredients: Cellulose, Citric Acid
Price: $98 for a one-month supply
Company: Gelesis

What is Plenity?

Plenity is a weight management pill designed with active ingredients that swell in your stomach, making you feel fuller, so you consume fewer calories throughout the day.

According to its manufacturers, Plenity has been ‘proven by science’ and ‘inspired by nature. At first glance, Plenity looks just like any other fat burner out there.

Similar to its competitors, Plenity is marketed to promote healthy weight loss but they tackle it through one key aspect: hunger control. They say it will suppress your appetite and support you in making healthier food choices so you can achieve healthy long-term weight loss.

Essentially, Plenity acts like an invisible gastric band – but without the steep cost of surgery. However, there are some major differences in how this weight loss supplement works – and who is permitted to take it. Yes, you’ve read that right – you can’t simply “add it to cart.”

Who is Plenity for?

In order to get Plenity, you have to undergo an assessment through an online consultation with a doctor qualified to prescribe Plenity – but only if it’s right for you. This is based on whether you’re obese or overweight, or if your body mass index (BMI) is 25-45kg/m2.

As it’s one of the only FDA approved weight loss pills on the market, Plenity does get somewhat of an authoritative air in the fat burner industry. Coupled with the fact that you can’t get it over the counter (OTC) but only with a prescription also adds to the exclusivity surrounding the product.

Sound intriguing? We thought you might say that…

Here at QC, we’ll be inspecting Plenity with a fine-tooth combo to see how it will work for you, and whether it lives up to the big claims.

Is Plenity really just that effective? Or is this whole prescription thing yet another trick to try and stir up interest in a supplement which actually doesn’t work as well as marketed?

Our team finds out.

How to Use Plenity (Dosage Directions)

Plenity instructions for use is to take 3 Plenity capsules with water, 20 minutes before your lunch or dinner. According to the manufacturer, it’s important that you drink 16 oz of water (2 big glasses) for the capsules to work.

Another tip is to use the 20 minutes you’ve got before eating to plan what you’ll have for the meal and “eat mindfully.” Setting the intention to be present while eating your food can further contribute to consuming fewer calories.

Does Plenity break a fast? It does not! The only 2 ingredients in Plenity are cellulose and citric acid, neither of which have any nutritional value, and by consequence, they won’t break your fast.

Plenity: The Ingredients

Plenity label information reveals there’s only 2 natural ingredients in the product. If Plenity is as effective as its competitors, than having just 2 ingredients is pretty impressive.

The ingredients are cellulose and citric acid. They’re meant to work together as a “three-dimensional matrix” which is designed to swell in your stomach and small intestines to promote fullness and satiety.

The whole idea behind Plenity’s ingredients is to reduce hunger to an extent that you’ll eat smaller portions without cravings. The result? Potentially quicker fat loss.

There are a few slight downsides to Plenity’s ingredient profile except for its lack of more ingredients. Mainly, this includes the use of a proprietary blend, which means you can’t see the doses of cellulose and citric acid which are found in it – you can only see their combined dosage.

Here’s a closer look at the ingredients in Plenity:


So, the first of the two is cellulose which you’ll commonly find in food products, where it’s used as a thickening agent. Cellulose’s connection to reducing appetite is also the reason why it’s a common filler in diet foods, having the potential to keep you satiated without extra calories.

As humans can’t digest or absorb cellulose, it instead takes up space in your stomach, delaying hunger in a similar way to soluble fiber, without increasing the number of calories consumed. Bear in mind that, although cellulose is often referred to as a “dietary fiber” on some labels, you could be fooled into thinking you’re getting actual fiber. However, cellulose doesn’t have the same nutritional benefits as natural food.


Citric Acid

Citric acid is, like the name suggests, commonly found in lemons, limes and other citrus fruits. Its widely used in household cleaners for removing stains and odors, in food products to keep them fresh, and cosmetics like hair sprays, deodorants and lipsticks to prolong their shelf-life.

In terms of weight loss, citric acid is thought to increase metabolism so you burn more fat. This is down to a chain of chemical reactions starting with citrate, a molecule of citric acid, which you may have heard of as “the citric acid cycle.” This chemical reaction sparks a conversion of food into energy that you can burn off, leading to higher calorie consumption.

Citric acid is also beneficial for enhancing the absorption of minerals so your body gets more from the foods you eat. In other words, if you’re eating a nutrient-dense diet, citric acid helps to optimize every meal.


Our Thoughts on the Ingredient Profile

Citric acid and cellulose both have evidence showing they may promote weight loss in one way or another. Cellulose helps through appetite suppression, and citric acid aids your metabolism to burn more fat for energy.

With that said, could Plenity include more proven fat loss ingredients to be more effective? It certainly could.

There are numerous natural compounds out there that are shown to improve satiety, increase thermogenesis and calorie burning, and even improve mood and willpower to help you make healthier diet choices. Such ingredients include Cayenne Pepper Extract, Green Tea Extract, and Glucomannan (Konjac Root Fiber) among others.

There’s a good reason why the market-leading fat burner supplements use at least 5 or more ingredients in their formulas. Together, these ingredients work synergistically to target weight loss from multiple angles. With only 2 ingredients, Plenity leaves a lot to be desired in its formula.

Editor’s Pick:

The Five Best Fat Burners in 2024

How Does Plenity Work? Explained in Detail

Plenity is formulated to provide appetite support so you can control your cravings and lose more weight faster.

Each hydrogel capsule consists of a proprietary blend of citric acid and cellulose.

Once it hits your stomach, the capsule shell dissolves, releasing the “three-dimensional hydrogel matrix.” When combined with water, each hydrogel cell can swell up to 100 times its weight.

As the cells soak up the water, they expand, taking up room in your stomach which makes you feel fuller and more satiated from food. As a result, you’re less likely to overeat.

After you’ve eaten, the cells break down in your small intestine and re-circulate the water absorbed back into your digestive system.

Plenity capsules aren’t absorbable or digestable so you don’t need to stress about any unwanted calories.

As a result of its bioactivities, Plenity provides the following benefits:

  • Helps reduce calorie intake – filling up the stomach temporarily, making it easier to reduce portion sizes
  • Assists in making healthier choices – because the active ingredient in Plenity will be swelling in your stomach, you’re less likely to crave unhealthy foods or overindulge.
  • Promotes healthy metabolism – some studies link citric acid in Plenity with slightly increased metabolic activity.

Plenity Reviews & Testimonials: What do People Say?

Almost all reviews we’ve found were videos from Plenity so, it’s hard to say whether these are genuine reviews or paid ads.

One user from a Plenity testimonial video said that the supplement helped them eat less without restricting their food choices. The person mentioned they could still eat the foods that their family was eating, without having to sacrifice their progress.

As it’s still a new supplement, Plenity is not broadly available at the moment. So, perhaps in the near future, we’ll have more independent reviews to judge Plenity’s effectiveness in a more balanced way.

Plenity Before and After Results

As we said, it was a struggle finding much in terms of before and after pictures. Mainly because Plenity is still new to the market.

However, you can find a video advertisement on Plenity’s own website and on their Youtube channel which, truthfully, is difficult to say whether it’s PR-let or genuine user testimonials.

Does Plenity Have Side Effects?

Does Plenity make you poop? Does Plenity cause diarrhea? These are some of the more common side effects of using a fiber-containing supplement like Plenity. If you have a sensitive stomach, then you may experience the aforementioned gastrointestinal side effects from using Plenity, along with constipation and nausea.

Studies done on Plenity show that it can also increase issues like bloating, gas, and stomach pain. However, these side effects are often mild and transient.

Because of the way Plenity works, we do advise sticking to their recommendations in terms of staying hydrated and drinking plenty of water.

Plenity Price – How Much Does Plenity Cost?

A one-month supply of Plenity will cost you $98. There are no discounts for Plenity at the moment.

Additionally, Plenity isn’t covered by the insurance of most medical plans.

Plenity isn’t available in Australia, UK, Canada, or anywhere else other than the USA at the moment. As it’s a prescription-only supplement, there are no coupons for Plenity and you won’t find it at Walmart, Amazon or Walgreens.

Plenity FAQs

  • Does Plenity work right away? In terms of appetite suppression, Plenity is claimed to work shortly after consumption. When ingested, Plenity’s contents swell in your stomach resulting in increased feelings of fullness and appetite suppression.
  • Does Plenity give you energy? Plenity doesn’t contain any stimulants, and as a result, it doesn’t provide an energy boost or other benefits that are common to competitor fat burner supplements.
  • Does Plenity break a fast? Plenity does not break a fast, because it doesn’t contain any calories or nutritional value.
  • Plenity vs Phentermine: which is better for weight loss? Plenity and Phentermine are both prescription-only products. However, Plenity is a nutritional supplement while Phentermine is an amphetamine-like medication. Consult your doctor to determine which one is right for you and whether you can take Plenity and Phentermine together.
  • Is Plenity the same as Metamucil? Although Plenity and Metamucil are both fiber-based supplements, they’re not the same. Plenity uses cellulose, whereas Metamucil uses another form of dietary fiber, Psyllium. Each one has different effects on your body. Metamucil is more targeted towards cardiovascular and digestive health whereas Plenity is strictly focused on weight loss.
  • Plenity and keto – can you take Plenity while on a keto diet? Plenity contains no carbohydrates, which makes it suitable for those on a ketogenic diet.

Plenity Review Summary: Is Plenity Legit?

Despite some early concerns, Plenity does like like a good way to help you lose weight. Its simple concept and ingredient formula means it can suit a wide range of people.

Most of the weight loss pills we review contain natural stimulants like caffeine, which may not be ideal for those who are sensitive – so it’s nice to see a company that has come up with something a bit different to appeal to a wider audience.

The only issues we had is mainly, the price. Compared to other fat loss aids on sale, the cost is incredibly steep and may deter many people who simply can’t fit it into their budget. Secondly, you can only get Plenity if you meet their guidelines – e.g. if you’re obese or within their BMI metrics. It’s also quite a tedious process, having to arrange online consultation and use a prescription to buy it. Some people will just want the freedom to try out a new fat burner without all the headaches.

Since Plenity is FDA-cleared, it does make it stand out from the crowd. It feels more official and clinically proven than your run-of-the-mill weight loss supplement. But you should be aware that, while they have had this backing, Plenity doesn’t qualify as actual medication. It’s still just a weight management pill like others, but more targeted towards people who struggle to control their hunger and cravings.

From our experience, we do think Plenity’s formula could’ve included more proven ingredients for the price they’re charging, which would make it more effective and better value for money overall.

If you’re looking for a weight loss supp to improve exercise, boost motivation or enhance fat burning, there are plenty of other more tried and tested alternatives out there you can ‘add to card’ without any hassle! If you’re unsure where to start, why not check our Editor’s Pick of The 3 Best Fat Burners for Women for this year’s list of safe, effective products.

-Click for Top 5 Fat Burners of This Year-

1 Comment

  1. Thank you for demystifying this product. FDA approval for this product is ludicrous when they seldom, if ever, give approval to vitamins.

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