Prolessa Duo shake Review: Does it work?

Expert rating: 2.8/5

Customer rating: stars-icon voted

Intro: What is it?

Prolessa Duo shake is a weight loss shake powder with 2 clinically tested ingredients intended to help reduce hunger and body fat.  It’s considered an additional additive to another one of the company’s shakes, but it can also be taken alone.

The company doesn’t give much information on this product beyond claiming it has healthy fats added. It’s made to help reduce appetite and to provide a sensation of fullness. It also claims to have healthy fats which will reduce body fat. There’s a 7 day or 30 day program offered for weight loss, depending on how much of this powder you purchase. So is there any benefit to it? What can you expect in terms of results? To find out everything you need to know about Prolessa Duo, read on.

Prolessa Duo Ingredients

There’s 12 ingredients provided:

 Safflower Oil Derived Conjugated Linoleic Acid Palm Oil Oat Oil Glucose Syrup
Sodium Caseinate Silicon Dioxide Ascorbyl Palminate Sodium Phosphate
Potassium Phosphate Soy Lecithin Natural Mixed Tocopherols Natural Flavor

Here’s a description of some of the ingredients:

Glucose Syrup: Sweetener that can be extracted from many different things such as corn, wheat, and potatoes. It’s at least 90% glucose, and is a cheap sweetener that’s easy to make. It’s only a few processing steps away from being corn syrup.

Ascorbyl Palminate: A fat soluble form of vitamin C. When added to the skin, a published clinical study by Pub Med showed it:

may intensify skin damage”

Palm Oil: Vegetable oil taken from the palm tree. It’s considered less healthy oil than other varieties. A study published by the Journal of Nutrition showed it lead to:

“Acute Myocardial Infarction”

This is another name for heart attacks.  Another study by the American Clinic of Nutrition showed it:

“significantly affected(sic) HDL”

So it not only raises bad cholesterol, but it can lead to heart attacks. It’s also known to be just as bad, if not worse than trans fats according to a study by Pub Med.

Potassium Phosphate: Often only given as a medication to increase the acidity of urine. It’s also used as a phosphorus source.  Doctors will often prescribe it in exact dosages in order to avoid side effects such as nausea, headaches, vomiting, diarrhea, and vomiting.

Conjugated Linoic Acid: Often found in meat and dairy products, this form of fatty acid is used as a fat loss tool. Though studies show its effects are weak to non-existent.  According to

“supplement for personal goals is quite lackluster”

It’s also considered a cheap ingredient which is already found in large amounts in foods.

Macronutrients and Calories

Calories 70 Calories From Fat 50 Total Fat 6g, 9% Saturated Fat 1g, 6%
Monounsaturated Fat 1g Sodium 15mg, 1% Total Carbohydrate 2g, 5% Sugar <1g


There’s only a small amount of calories at 70, of which 50 come from fat. Therefore the total fat per serving amounts to:

50/70= 0.714 times 100= 71% fat per serving.

The FDA states that anything with 20% fat or more is considered high fat. So this product is made up of an incredible amount of fat.


No fiber is provided, therefore there are no aids for proper digestion, and there’s also no appetite suppression which comes from fiber. Any hunger satiety has to come from the added protein of which there is none.


Less than one gram of sugar is added which is good. However, the sweetener added is glucose syrup, a cheap additive which is often found in processed foods.

 The Quality of Prolessa Duo’s protein

No protein is added in any form.  The company does mention that Prolessa Duo does mix well with the companies Formula One shake, but without any added form of protein it makes this brand rank poorly.

Protein is needed to keep lean muscle mass, to prevent hunger, and to promote many healthy reactions in the body.  They are used by the cells in order to act out many important functions.

The Price and Quality of Prolessa Duo

The largest container has 30 servings, of which it’s recommended to get only one serving per day. The only way to purchase this brand is through Herbalife members, so it’s unknown what the standard price is. does have it for sale for $90.00.

This means at one a day the daily cost is:

$90.00/30= $3 a day at one serving a day.

This is considerably pricy considering it’s not a full meal replacement. In fact, the label of this brand mentions it’s meant to be mixed with their Formula 1 shake.

There are no vitamins and only a few common minerals added. No form of protein or fiber is added either.  The only nutrient added is sodium, no form of copper, iodine, selenium, magnesium, vitamin A, B, C, D, E, or K is added.

The Addition of Formula 1

On the nutrition facts label there’s mention to:

“Use Prolessa Duo powder once daily by adding to your morning or afternoon Formula 1 shakes”

On the front of the website is mention that you can take this weight loss powder with Formula 1 for additional benefits, yet on the mixing descriptions it’s revealed that it needs to be mixed with Formula 1.

This increases the overall cost of the product, and it’s likely why it has many weak ingredients and a lack of protein and fiber.

Still, for what you’re getting in this powder it’s incredibly pricy. It’s basically a mixture of potentially unhealthy oils, a common fat source found in meat and dairy, and binders with flavoring agents.

Also, the same mixing directions mentions:

“Some individuals may experience digestive discomfort”

This is on top of the lack of benefits this brand admits to have, since it has to be mixed with a meal replacement shake which increases the overall price.

2 clinically studied ingredients

There’s mention of there being 2 clinically studied additives. CLA and the mixture of palm oil and oat oils.

Though they are studied, the results from the clinical studies actually go against any of the health claims.

One website called Examine which posts summaries of all the clinical studies on CLA showed that:

human studies on CLA are very unreliable”

Furthermore, it can lead to upset stomach, diarrhea, nausea, and fatigue.

Another study on palm oil published by Pub Med showed it had a:

high amount of saturated fat”

I couldn’t find any studies on oat oils. Also, Herbalife failed to cite any of their clinical studies to show support for any of these ingredients. To be fair, they’re not lying when they claim there are clinical studies; it’s just misleading since these same studies did not show any positive results.

Palm oil was seen as increasing bad cholesterol and increasing the risk for cardiovascular disease. CLA was weak at best, and sometimes it had no effect at all. Oat oils have not been studied in clinical studies.


The creators are the Herbalife of America International Inc., a multilevel marketing company. They have long been criticized for allegations of running a fraud pyramid scheme. Their information is available below:

Phone Number: (310) 410-9600

Address: 800 W Olympic Blvd #406

Los Angeles, California 90015

There have been some complications from the past:

  • The Fraud Discovery Institute ran a study into Herbalife products which showed there were elevated levels of lead.
  • A private US laboratory and the Israeli Forensic research laboratory found toxic ingredients in the supplements. Customers who took these supplements suffered from liver problems. Hospitals in Spain, Iceland, Switzerland Argentina, and the United States showed an increase of patients, some of which who died.
  • A class action lawsuit was settled for over $6 million for claims of the company running a pyramid scheme.

Customer Opinions

Currently three’s 79 review on People have the following to say:

“real garbage don’t waste your money”

“I actually gained a pound”

“it has a medicinal taste”

“This product does not work”

Major concern is expressed by customers due to the lack of weight loss benefits. A few customers also mentioned they actually gained weight.

Unfortunately there are several fake reviews available online. This is because anyone can become a distributor of Herbalife products, and these same people earn a commission of any sales that are made.

There were real reviews which came from verified customers, but several of the positive reviews are from people who didn’t have a verified purchase.


Many different things are important to consider about Prolessa Duo:

  • It’s not meant as a full meal replacement: This shake mix is intended to be mixed with another pricy shake made by the company. It’s unknown why this brand is sold by itself, since it’s not meant to produce full rounded benefits. It also fails to provide a full nutritional profile that a proper meal replacement would have. Yet it’s still incredibly pricy at $90 for a 30 serving portion. One month for this powder to be completed, and it’s still not offering a full range of benefits seen in an actual meal replacement. This powder is incredibly pricy for what you’re getting.
  • There’s no added protein or vitamins: No form of nutrients are provided besides some sodium, fat, carbohydrates, calories, and sugar. It’s completely missing any form of nutrition that the body needs in order to properly lose weight. This is likely why many customers have complained about actually gaining weight. The majority of this shake powder is a form of fat added, which is commonly found in meat and dairy. Still, without any clinical studies and only negative customer opinions, it’s unlikely this brand will have the nutritional support to help one lose weight.
  • Many customers have complained about the lack of weight loss benefits: Several reviews are available online which detail the lack of weight loss benefits that many have experienced. There are several accounts of people actually gaining weight instead of losing it. There were some positive reviews available, but there are likely from people who sell this brand, since they’re not verified purchases. Not only did some people gain weight, but there were reports against the high price, and the lack of nutrients.
  • It’s incredibly expensive for what you’re getting: It’s one of the most expensive weight loss powders available, and it’s not meant to produce full results unless you buy another meal replacement. This product is made up of a sweetener, a fat source, agents made to provide a better consistency, flavors, oils, and binders. Most of the ingredients are often found in processed foods, and they’re only included to make the product mix and taste better. There’s only added fats and oils which come from cheap often processed sources. For example, the added palm oil is seen as an additive which may actually increase the risk for heart attacks. CLA is the main ingredient which has not been shown to be any more effective for weight loss than most touted ingredients.
  • Several of the ingredients have not been proven to be effective: CLA is the main clinically studied ingredient added. This fat source is seen to produce inconsistent and sometimes weak benefits towards weight loss. It’s yet to be proven to be a superior source for weight loss. Another clinically studied additive is Palm oil and Oat oils. Oat is of course a cheap ingredient which has a health source of carbohydrates. Palm oil has been shown to actually increase cholesterol, fats in the blood, and it can increase the risk for heart attacks.

Due to the high price, lack of a full nutritional profile, absolutely no protein and fiber, and numerous negative customer reviews, this powder fails to provide what’s needed to be the best for weight loss.

The majority of the ingredients are only added to improve consistency and to make the product mix better. Overall, the main ingredients have either not been proven to be effective, or they may produce negative results.

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