Updated: 11/17/2015 - Sponsored by Leptigen

Prolessa Duo Review - Does This Appetite Suppressant Work? Are taste and ineffectiveness deal breakers?

Editor's Review: 3.5 / 5.0

prolessa-duo-product-imageDiet products either work or they don’t. Period. Let’s find out which one Prolessa Duo is. We concentrated on ingredients, side effects, scientific support and customer service. Additionally, we paid close attention to hundreds of consumer comments and reviews. We then refined and condensed to give you the info you need.

EDITOR'S TIP: Combine Prolessa Duo with a proven fat burner such as Leptigen for better results.

What You Need to Know

First off, Prolessa Duo is an appetite suppressant that has conjugated linoleic acid, palm oil and minerals. You can mix the supplement with a shake or consume as is once per day. The product supposedly assists with weight-loss. It’s easy to mix and you can drink it on the go, two benefits.

The product, offered by the MLM company Herbalife in 1980, does not include artificial ingredients, a good choice.  We do like the longevity of the business behind Prolessa Duo and there are a few positive customer comments, but read on…

Taste – “Not Flavorful?”

The first concern we had with Prolessa Duo was taste. “When you add a powdered appetite suppressant to a shake, you don’t want it to alter the flavor,” said our Research Editor. “If it just isn’t any good, dieters will more than likely stop using it.”

“This stuff taste like paint! I literally felt like I was drinking paint each time I used it,” said a consumer

“It has a medicine taste,” reported one customer.

Scroll below for one of the best products we’ve seen in 2015.

FDA Judgments – “Concerning”

The Food and Drug Administration contacted Herbalife in December of 2014 because the company used a promotional video that implied the FDA supported products sold by the business. All relevant information has since been removed.

Ineffectiveness – “It Doesn’t Work”

According to numerous customer comments, when dieters  followed the recommendations for taking Prolessa Duo they didn’t see results. “I was on the program for 3 weeks & lost absolutely nothing,” commented a consumer.

“Didn’t notice any difference and fat percentage did not decrease,” said a customer.

“Did not lose anything and I am in the military so I’m constantly moving around. I actually gained a pound,” reports a user.

Is There Any Real Science?

While the official Prolessa Duo website states the ingredients are “clinically tested,” we couldn’t locate published scientific research supporting the suggestion you’ll lose weight. At DietSpotlight, finding studies backing claims is critical. If there’s no science, why take a chance?

The Bottom Line – Does Prolessa Duo Work?

We’ve looked up and down this one – so, what do we think? After thoughtful consideration regarding Prolessa Duo, we’ve come to a conclusion. There are some positives like a few favorable comments and the longevity of the company, but we have reservations about it because of the lack of published clinical research supporting the weight-loss claims. Plus, we have concerns about the FDA judgments and the MLM opportunity, making purchasing smaller quantities more difficult.

If you’d like to rock your best body, we recommend going with a supplement containing ingredients backed by published clinical research that doesn’t have to taste good to work.

Among the best products we’ve seen in 2015 is one called Leptigen. The formula contains a four-ingredient proprietary blend, shown in published scientific research to stimulate fat loss and ignite metabolism. There’s no talk of negative side effects and reviews on the web report customers are seeing excellent results.

Additionally, the makers of Leptigen are confident in the supplement so they’re offering a Special Trial Offer, nice bonus.

Learn More About Leptigen »
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How Does Prolessa Duo Compare?

Previous Prolessa Duo Review (Updated July 14, 2014):

What You Should Know

Click Here To See Our Highest Rated Review

Prolessa Duo is a complimentary supplement that can be added to protein shakes or yogurt to improve weight loss success, according to the product description. The product is available as part of the Herbalife line, which means there is a natural push to purchase other Herbalife supplements to take in conjunction with Prolessa Duo. Herbalife, luckily, has a fair BBB rating. Prolessa Duo used to be available in pill form, but the company recently added the powdered product to the lineup. Based on the ingredient list for the supplement, there is no indication the dieter will lose weight with Prolessa Duo.

List of Ingredients

  • Safflower Oil Derived CLA
  • Palm Oil
  • Oat Oil
  • Glucose Syrup
  • Sodium Caseinate
  • Silicon Dioxide
  • Ascorbyl Palmitate
  • Sodium Phosphate
  • Potassium Phosphate
  • Soy Lecithin
  • Natural Mixed Tocopherols
  • Natural Flavor

Product Features

CLA or conjugated linoleic acid has been around for more than a decade. One of the first popular CLA supplements with Tonalin, which claimed the dieter could take CLA without changing their current diet to lose weight. CLA is not clinically proven to boost or promote weight loss, but there are a few studies that suggest a small amount of fat loss occurs when taking CLA like the kind found in Prolessa Duo. There are also studies that claim CLA intake by obese individuals can have negative side effects like increased insulin resistance and increased risk of diabetes. On the official site more detail is given. Palm oil, the next ingredient in Prolessa Duo, is not considered a healthy fat. The oil is high in saturated fat and it may be oxidized, on some level, before being added to products and supplements. The unhealthy nature of palm oil is supported by the fact that it is a common ingredient in processed foods. Oat oil doesn’t appear to be a significant source of anything other than fat and saturated fat. Prolessa Duo also adds glucose syrup – a form of sugar, and various electrolytes to the formula. These have no impact on weight loss.

See Our Featured


  • Ingredients are listed on the Herbalife website.


  • There don’t appear to be any weight ingredients in the formula.
  • Palm oil and oat oil are sources of saturated fats.


Prolessa Duo is a powdered supplement that has no effect on weight loss. The supplement will add 70 calories to your normal protein shake or yogurt, but it will not increase metabolism or decrease hunger. This is briefly touched upon on their wikipedia page. The product label claims it will reduce hunger and decrease body fat, but Herbalife does not support these claims with clinical evidence and there are no testimonials for the supplement.

Prolessa Duo FAQ:

We sorted through hundreds of customer reviews as well as the official Prolessa Duo website to find the valuable information you’re looking for to create this helpful FAQ.

What are the side effects of Prolessa Duo?

While we were unable to find reports of side effects, we did notice users complaining of issues with prescription medication interactions. One user review did complain about constipation.

What are the ingredients in Prolessa Duo?

Ingredients in Prolessa Duo include: Safflower Oil Derived CLA, Palm Oil, Oat Oil, Glucose Syrup, Sodium Caseinate, Silicon Dioxide, Ascorbyl Palmitate, Sodium Phosphate, Potassium Phosphate, Soy Lecithin, Natural Mixed Tocopherols, and Natural Flavor.

Does Prolessa Duo Work?

Prolessa Duo has helped some users be successful with weight loss. However, there are no clinical studies to support this product as a viable weight loss solution. It includes ingredients that are sources of saturated fats, added sugar, and nothing that is known to help boost the metabolism or suppress the appetite. If you’re looking to shed some pounds, you may want to consider using a supplement with clinically proven safe and effective weight loss ingredients, such as Leptigen.

How much does Prolessa Duo cost?

Prolessa Duo pricing information is not available at the official Herbalife website.

How should I take Prolessa Duo?

The manufacturer recommends Making your Formula One shake his usual and then adding one scoop of the mixture and mixing for an additional 5 to 10 seconds. Use it once a day by adding to your morning or afternoon Formula One shake, whenever you find that snacking or overeating may be a challenge. do not mix it with acidic or hot drinks.

Can I take Prolessa Duo if I have a health condition?

If you are suffering from health condition, or using any kind of prescription medication to treat any condition or disease, talk with your medical professional before beginning this or any other supplement. It is not known whether it is safe for use during pregnancy. It is not safe for children under the age of 18.

What do users like about Prolessa Duo?

Many users liked how easy it was to mix the shake and how it was designed to enhance your diet, rather than replace a meal.

What do users NOT like about Prolessa Duo?

Many users complained about the taste. Some users say it tastes like paint, while others say it tastes like medicine. Some users also complained that it doesn’t work.

Is this supplement safe for diabetics?

No, there are studies that show using CLA can cause negative side effects such as insulin resistance and increased risk of diabetes. The glucose ingredient may cause blood sugar to rise.

Do I have to have a blender to use Prolessa Duo?

Using a blender is not necessary to blend the Prolessa Duo shakes, though it may improve the quality of mixing and thus improve overall taste.

How do I contact the Prolessa Duo customer service department?

Visit http://company.herbalife.com/worldwide to get a list of countries, and the contact information for each. Customers in the United States Can call 1-866-866-4744 and reach a customer service representative any time Monday through Friday between the hours of 9 AM and 6 PM Pacific standard time and Saturday from 6 AM to 2 PM Pacific standard time.

Do you know of any special deals or discounts on Prolessa Duo?

Right now, we are not able to find any kind of special deals are discounts for Prolessa Duo. Over the past few months, we’ve seen more readers are taking advantage of Leptigen’s special trial offer, which is just the cost of shipping and handling. Click here to give it a shot.

One User Review About Prolessa Duo

Leave comments below
  • 1
    Gilbert Deniz

    I have been taking prolessa for around 2 weeks and i work out daily but i noticed that in made my muscles get smaller… is prolessa responsible for that?


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