Updated: 09/22/2015 - 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-imageThere’s a lot of interest is Prolessa Duo, so 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 Judgements

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. According to the Dietary Supplement Health and Education Act of 1994, that’s not in the power or responsibility of the government agency. All relevant information has since been removed.


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,” said a user.

The 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 clinical studies backing claims is critical. If there’s no science, why take a chance?

The Bottom Line

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 can’t recommend 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 cost-effective supplement, containing ingredients backed by published clinical research.

One of the best supplement we’ve seen in 2015 is one called Leptigen. The product 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 »

(Feel free to scroll below for our previously published full-length Prolessa Duo Review)

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. 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. 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 Diet


  • 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. 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.
GD Star Rating

One User Review About Prolessa Duo

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  • 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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