Diet 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.
What is Prolessa Duo?
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. 
There’s no mention as to when Prolessa Duo hit the market, but the parent company, Herbalife, was founded in 1980.  You can purchase the product on the official website and through third-party retailers. We do like the longevity of the business and that we found a few positive customer comments, but read on…
Prolessa Duo 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.
We found that some customers had a different take on the taste of Prolessa Duo ingredients.
“I have always enjoyed Herbalife products. I find their price to be a bit high, but the taste makes it worthwhile,” commented a dieter.
FDA Advisories – “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. 
There were some users that reported changes while using Prolessa Duo. “I notice myself resisting the urge of snacking in-between meals and it feels awesome,” stated a dieter.
“I think it really works with a good nutrition plan,” said another.
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? Also: read our Dietspotlight Burn Weight-Loss Kit review »
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 this year is one called Dietspotlight Burn. 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 Dietspotlight Burn are confident in the supplement so they’re offering a Special Trial Offer, nice bonus.
Previous Prolessa Duo Review (Updated July 14, 2014):
What You Should Know about Prolessa DuoProlessa 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. Aside from the CLA in this product, we'd like to point out Slendertoxtea is a dietary supplement instilled with green tea, yerba mate and senna that helps the body detox and flush toxins.
List of Prolessa Duo IngredientsIngredients:
- 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 FeaturesCLA 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.
Advantages of Prolessa Duo
- Ingredients are listed on the Herbalife website.
Disadvantages of Prolessa Duo
- There don’t appear to be any weight ingredients in the formula.
- Palm oil and oat oil are sources of saturated fats.
ConclusionProlessa 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 is a powdered supplement from Herbalife. The formula claims to help with "hunger control" and "fat reduction." The active ingredient has been clinically tested with some positive results. However, there's no strong evidence that this product will promote lasting weight-loss.
Prolessa Duo Ingredients and Supplement Facts
Serving Per Container: 7
|Amount per Serving||% DV|
|Conjugated Linoleic Acid||*||*|
Other Ingredients: Silicon dioxide, ascorbyl palmitate, sodium phosphate, potassium phosphate, soy lecithin, natural mixed tocopherols, natural flavor
We dug deep into the Prolessa Duo ingredients to give you the details you need.
Conjugated Linoleic Acid
Conjugated linoleic acid is a group of chemicals found primarily in beef and dairy products.
What is it Supposed to Do?
There has been some research linking them to anti-cancer properties and weight loss.
According to a study published in Lipids, “CLA supplementation in women produced a transient decrease in leptin levels but did not alter appetite.” 
Palm oil is made from the fruit of a palm tree.
What is it Supposed to Do?
It is believed to combat high cholesterol and high blood pressure. It has also been used for increasing metabolism and to promote weight loss.
According to a study published in The American Journal of Clinical Nutrition, there is “Some evidence to suggest that the minor components of palm oil might have useful biological effects.” 
Oat oil is derived from oats, a type of cereal grain.
What is it Supposed to Do?
There are many health benefits associated with oat due to their high content of essential nutrients and vitamins.
According to a study published in Food and Nutrition, “This study suggests that intake of fractionated oat oil prolong lipid digestion affect postprandial plasma lipids and have an effect on satiety.”
One that’s caught our attention is one called Dietspotlight Burn. The supplement contains clinically-tested ingredients and has been shown to work. Click above to learn more.
- 1. Conjugated linoleic acid supplementation in humans: effects on circulating leptin concentrations and appetite. (2000). Lipids. October 27, 2016.
- 2. Introduction: nutritional aspects of palm oil. (1991). The American Journal of Clinical Nutrition. November 9, 2016.
Prolessa Duo Side Effects:
Nowadays, weight-loss supplements play a key role in a lot of lives. This doesn’t mean the natural choice doesn’t have a possibility for a negative reaction. With every formula there is a chance for an adverse effect, and while Prolessa Duo side effects are relatively rare, it doesn’t mean they don’t happen to some people.
Migraines are a painful type of headache that is usually accompanied by nausea and vomiting. Another characteristic of a migraine is abnormal sensitivity to light. 
What causes migraines?
Migraines are believed to be the outcome of abnormal brain activity that temporarily affects nerve signals, blood vessels, and chemicals in the brain. Migraine triggers can be emotional or physical in nature. Stress, depression, or poor diet can also result in this condition.
Bloating is an uncomfortable condition in which the abdomen feels distended, tight and overstuffed. Bloating may cause nausea and sweating. It is fairly common in adults and children.
What causes bloating?
Bloating is commonly caused by swallowing air into the digestive system. This swallowed air can make the stomach feel full and extended. Other factors may include constipation, gas, fiber intake, irritable bowel syndrome (IBS) and even heartburn. 
Stomach pains (abdominal pains) can be a sharp or burning sensation in the abdomen region of the body between the pelvic area and the chest. These pains may cause sweating, nausea, and vomiting depending on the cause of the issue.
What causes stomach pains?
Constipation, stomach flu, or another infection can cause stomach pain. Peptic ulcers are also a known factor, along with any inflammation or infection of the organs. Appendicitis and kidney stones are good examples of more serious causes for stomach pain.
Constipation is the hardening of bowel movements and the inability or difficulty passing stool. More severe cases of constipation are called obstipation, which is the failure to pass stool or gas, or fecal impaction, which could lead to bowel obstruction.
What causes constipation?
Lack of fiber in the diet is among the most common causes of constipation. Other factors include physical activity or consumption of dairy products. Constipation is the result of lack of fluid in the digestive track, so dehydration is a common issue.
Prolessa Duo side effects are few and far between, although some users have noted a negative experience such as constipation, stomach pains, and migraines, among others. In an effort to safeguard yourself from any possible negative reactions, it’s always wise to consult a physician before taking any supplement. Especially if you are pregnant or nursing, under the age of 18, are taking prescription medications, or have a medical condition of any kind.
Prolessa Duo is a weight-loss supplement with side effects reported by customers who’ve used the formula. However, we’d also like to share that these reactions are few and far between.
“It also gave me stomach issues that I don’t have now that I’m off the product.” Nichole
“Taste like paint very clumpy and hurt my stomach.” Ari
“It’s supposed to make you feel full longer and apparently it does that by making you super bloated.” Sam
“It might work but I wouldn’t know it gives me migraines.” Karrie
“I have been taking Prolessa for one week and lost 4 pounds but when i woke up this morning i have indents on both sides of my waste that actually look like bruises i am concerned.” Rhonda
“I felt hyper at night and could not fall asleep last night..” Ann Marie
“I have been taking for two weeks and the only thing this product did so far is give me gas.” Shirley
“It left my shaker bottle smelling like mold and it even started to mold a little in the bottle of the shaker even if I washed it out right away.” Ruth
“It made me more hungry. I poured it into my shake I rather just drink the herballife shake. Too expensive. For it do to nothing.” Lazzette
“We would also have terrible gas all day and night, plus sharp stomach pains.” Kristin
Supplements causing adverse reactions are rare, that’s why one that’s caught our eye is called Dietspotlight Burn. There’s no mention of harmful side effects and customer comments are postive. Want to learn more about it? Click above.
Prolessa Duo Questions & Answers:
We sorted through hundreds of customer reviews about Prolessa Duo to create this helpful FAQ.
What are the side effects of Prolessa?
Prolessa is a pen name for Prolessa Duo. According to customer comments, Prolessa Duo side effects may include constipation, upset stomach, nausea, headache and sleeplessness.
What is in Prolessa Duo?
Prolessa Duo ingredents 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.
What is the active ingredient in Prolessa Duo?
The active ingredient in Prolessa Duo is safflower oil. 
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 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.
How much does a bottle of Prolessa cost?
A bottle of Prolessa Duo costs $28.05 for the seven day program and $106.85 for the 30-day plan.
How do you take Prolessa?
You should take one scoop of Prolessa Duo, mix with your Formula One shake and drink once per day.
What do users like about Prolessa Duo?
Many users liked how easy it was to mix Prolessa 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 of Prolessa Duo.
Is Prolessa Duo safe for diabetics?
While there are no studies that show using CLA can cause negative side effects such as insulin resistance and increased risk of diabetes, it’s best to contact a healthcare professional prior to using this supplement.
Do I have to have a blender to use Prolessa?
Using a blender is not necessary to blend the Prolessa Duo, although it may improve the quality.
Who makes Prolessa Duo?
The makers of Prolessa Duo is Herbalife.
Are there deals or discounts on Prolessa Duo?
Yes, there are special deals and discounts on Prolessa Duo, but you may need to reach out to an Herbalife distributor. However, our readers have been going wild over the past few months taking advantage of the Special Trial Offer offered by Dietspotlight Burn. Click above to learn more about it.
- 1. Palm Oil (2015). Medline Plus. October 23, 2016.
- 2. Comparison of dietary conjugated linoleic acid with safflower oil on body composition in obese postmenopausal women with type 2 diabetes mellitus. (2009). The American Journal of Clinical Nutrition. November 2, 2016.
Prolessa Duo Scientific Abstracts:
Conjugated Linoleic Acid
Results from studies have shown that conjugated linoleic acid (CLA) could cause a small reduction of body fat in humans, specifically in the abdomen, however there is no effect on body mass index or body weight. There aren’t any simultaneous improvements in glucose or lipid metabolism found in the research. The trans-10, cis-12 CLA isomer had surprisingly triggered substantial peripheral insulin sensitivity impairment as well as in blood glucose and serum lipid concentrations. In conclusion, CLA significantly increased lipid peroxidation. The metabolic actions of conjugated linoleic acid in humans seem complex, thus further trials and studies are needed. 
Analysis of the dosages and their effects had suggested that loss of fat when compared to placebo was −0.024 kg · g CLA−1 · week−1 (P = 0.03). Following a change in the median dose 3.2 g CLA/d, conjugated linoleic acid was found to be effective and created a decrease in fat mass for the CLA group (0.05 ± 0.05 kg/week; P < 0.001) as well as that same group when compared to placebo (0.09 ± 0.08 kg/week; P < 0.001). In conclusion, at a dose of 3.2 g/d, conjugated linoleic acid triggered modest body fat loss in humans. 
Aside from palmitic acid, palm oil is made up of linoleic and oleic acids which are both polyunsaturated and monounsaturated. Palm oil is made up of vitamins E and A, boasting powerful antioxidant effects. Palm oil has shown, on a scientific level, to protect the heart and blood vessels from ischemic injuries and plaques. When the oil is ingested as a dietary fat (in conjunction with a healthy diet) does not possess incremental risk for cardiovascular disease. Very little (if any) benefits are obtained when replacing palm oil with other oils that are abundant in mono or polyunsaturated fatty acids. 
When ingesting 35 and 14 g of lipids from fractionated oat oil, there had been substantial elevation in plasma levels of CCK, GLP-1, GLP-2, and PYY postprandially. This had concurred with an elongated increase of triglycerides and large cholesterol-containing particles. The satiety in women had risen 7 hours following consumption of 35 g lipids from fractionated oat oil without any alterations in food intake. Results of have also displayed that consumption of 14 g lipids from fractionated oat oil in the morning (with breakfast) had significantly decreased every intake throughout the duration of the day. In conclusion, the study has indicated that fractionated oat oil intake prolongs lipid digestion, has an effect on postprandial plasma lipds and has an effect on satiety. The traits of fractionated oat oil on GLP-2 suggest that consumption of fractionated oat oil improves gut health as well. 
- 1. Metabolic effects of conjugated linoleic acid in humans: the Swedish experience (2004). The American Journal of Clinical Nutrition. November 3, 2016.
- 2. Efficacy of conjugated linoleic acid for reducing fat mass: a meta-analysis in humans (2007). The American Journal of Clinical Nutrition. November 3, 2016.
- 3. Palm oil and the heart: A review (2015). World Journal of Cardiology. November 3, 2016.
- 4. Postprandial effects on plasma lipids and satiety hormones from intake of liposomes made from fractionated oat oil: two randomized crossover studies (2014). Food and Nutrition Research. November 3, 2016.