Updated: 04/18/2017 - Site operated by Leptigen

WonderSlim Review - Does This Meal Replacement System Work?

  • 38 User Comments
  • Rating: 2.9. From 47 votes.
By Summer Banks Mar 21, 2017

We’ve heard a lot of buzz about the “wonderful results” from Wonderslim, so we decided to check it out for ourselves. We took a look at the ingredients, side effects, clinical research and customer-service behind this meal replacement system. We also raked through hundreds of user experiences. That information was then condensed and summarized to give you the bottom line.

WonderSlim Readers: Click here to find out why we're giving away samples of our product, Leptigen.

What is Wonderslim?

To start, Wonderslim is a meal replacement system that allows you to use the company’s products in place of real food.[1] Supplements are also part of the equation. They offer a large variety of options for you to choose from, with varying ingredients. The end goal with this one is always the same, eat less to lose more.

Wonderslim was created by parent company Diet Direct in 2001. Their program does have some longevity, which is a good sign, but their products are only available directly through their website. Their meals do a good job at limiting caloric intake,[2] which can lead to some positive weight-loss results, but read on…

Price – “Yikes?”

The first concern with Wonderslim ingredients was the huge price tag. Most meal replacement programs are expensive, but this company took that to a whole new level. [3] You can consume up to seven products from this program meaning the monthly cost ranges from $250 to $400. “Wonderslim has the right idea,” said our Research Editor. “But with it costing as much as it does, most dieters won’t be able to keep it up for long.”

“$11 per day was their cheapest plan for 7 meals per day, there’s no way I can afford that!” said one user.

“Reduced caloric intake should help lose weight, but how can I afford to add $400 a month to my expense?,” claims another dieter.

Taste – “Nasty Food”

According to several reviews online, taste was another negative aspect of this meal replacement system. Customers complained that after just a few days they got sick of the bland, tasteless foods offered by Wonderslim. The feeling in the mouth was a deterrent to many as well. “I can’t get past the texture of these products, I don’t think I’ll be able to continue with Wonderslim,” said one dieter.

“Their food tastes horrible, I didn’t place a second order, even though I did see some weight loss,” offers another.

Our research has shown that diet programs with a difficult or troublesome aspect (cost, poor taste or texture, painful workout, etc.) are less likely to provide dieters with the long-term results that they’re looking for. If Wonderslim leaves the user wanting for something that is palatable, that’s when they’ll turn and run.

The Science – “Is Wonderslim Legitimate?”

The research behind Wonderslim is simple; a lower caloric intake requires your body to start using existing fat stores for energy, causing you to lose weight. [4] These products do provide that, but there are many others on the market that are more affordable. We’d like to see data confirming that Wonderslim is a higher performing choice than similar meal replacements. At DietSpotlight, it’s that science that gives us the information we need to make a final decision. In this case, there’s nothing there to set this one apart from similar options.

The Bottom Line – Does Wonderslim Work?

So now, what do we have to say about this one? We were excited to write about Wonderslim because of their realistic results and the benefit of a low-calorie diet. [5] We like the ease of ready-to-eat meals and the customer testimonials online, but without research proving that it performs better than more affordable options, we don’t feel comfortable recommending this as a weight-loss product. We’re also concerned about the poor taste and texture that many dieters complained about and the high cost.

If you’d like a more affordable way to lose weight, we suggest you find a supplement that offers proven weight-loss at a good price. It is has a formula with ingredients that are supported by unbiased clinical data, that’s even better.

Among the best products we’ve seen this year is one called Leptigen. This formula contains a four-ingredient proprietary blend that has been featured in multiple scientific studies and double-blind clinical trials showing it can help spark metabolism and boost fat loss. We were unable to find a single mention of negative side effects, but the consensus among dieters is that you can achieve great results.

Also, the company behind Leptigen is currently offering up a Special Trial Offer as a show of confidence, which is a low-risk way to see if it works for you.

Previous WonderSlim Review (Updated March 19, 2014):

Wonderslim: What You Should Know

WonderSlim is a company that manufactures various weight loss products. There variety of weight loss products consists of hot beverages, meal replacements bars, diet fruit drinks, shake mixes and pudding. They also offer a starter kit that retails for $470.40 and includes soups, protein shakes, meal replacement bars, protein puddings and cold and hot drinks. It is not stated how long this starter kit is supposed to last, but they do say that those who strictly use the starter kit can expect to lose eight to twenty pounds in a four week period. WonderSlim claims that all of their products can be used by any adult regardless of age, gender or fitness level. All of the WonderSlim products are high in protein and low in calories. One in particular, WonderSlim KLB Formula is a supplement used to increase the metabolism. The Wonderslim: WonderSlim website does clearly display their customer service and buying information clearly. This company's website does not have any ingredient lists or user testimonials posted though. Those wishing to use any of the WonderSlim products can do so without a prescription because they are considered food or dietary supplements.

List of Ingredients in Wonderslim

List of ingredients is not disclosed for any of the WonderSlim products.

Product Features: WonderSlim

The WonderSlim shakes come in a variety of flavors such as chocolate mint, vanilla, strawberry, chocolate and mocha. The protein puddings come in a variety of flavors such as toffee bits, lemon chiffon, custard crème, chocolate marshmellow and dulce de leche. The meal replacement bars also come in a variety of flavors such as peanut butter, oatmeal raisin and chocolate mint. The WonderSlim starter kits also include a shopping list, guidance from the company via email or phone, a daily meal plan and a lifestyle guide.


  • The WonderSlim products come in a large variety of flavors.
  • This company's products can be found at discounted prices through certain online retailers.


  • There is no ingredient lists posted for any of the WonderSlim products.
  • This company's weight loss products do contain sugar.
  • None of the WonderSlim products seem to contain any proven fat burners or appetite suppressants.
  • Some of the WonderSlim products may caffeine so those who are sensitive to caffeine should avoid this product because adverse side effects such as insomnia and irritability may occur.
  • Those taking MAOI's, SSRI's, antidepressants, NSAIDS, corticosteroids or certain other medications may not be able to use any of this company's products.
  • Those who have diabetes, hypoglycemia, high blood pressure, cardiovascular ailments or certain other medical conditions may not be able to use any of WonderSlim's products..
  • Women who are pregnant or nursing may not be able to use this company's products.

Wonderslim Conclusion

WonderSlim does not really stand out from the rest of the weight loss product companies available today. The WonderSlim products may not be effective for weight loss because there does not seem to be any products with any proven appetite suppressants or fat burners in it so those seeking a weight loss supplement with the ability to suppress the appetite and burn fat may want to research other products that are intended for appetite suppression and fat burning. Those seeking weight loss may also benefit from developing a healthy diet and exercise program that suits them and their lifestyle. Users will need to assess their health and fitness goals and decide if using any of the WonderSlim products is right for them.

WonderSlim Questions & Answers:

We boiled down dozens of dieter responses and user comments about WonderSlim into this informative FAQ.

What are the side effects of WonderSlim?

Possible WonderSlim side effects could include upset stomach, diarrhea, constipation, allergic reactions, headache, nausea and gastrointestinal problems.

What are the ingredients in WonderSlim?

WonderSlim ingredients are (On The Go! Vanilla Meal Replacement Shake) Calcium Caseinate (From Milk), Fructose, Resistant Maltodextrin (Dietary Fiber), Natural and Artificial Flavors (Includes Barley, Tree Nuts [Walnuts] and Sulfites), Corn Syrup Solids, Sunflower Oil, Magnesium Phosphate, Nonfat Milk, Sodium Caseinate, Potassium Bicarbonate, Guar Gum, Modified Cornstarch, Dipotassium Phosphate, Salt, Soy Lecithin, Sucralose, Vitamin C, Carrageenan, Ferric Orthophosphate, Tocopherol (To Protect Flavor), Coenzyme Q10, Monoglycerides, Acesulfame-K, Zinc Sulfate, Vitamin E (Alpha Tocopherol Acetate), Niacinamide, Copper Gluconate, D-Calcium Pantothenate, Maltodextrin, Manganese Sulfate, Yellow #5, Vitamin A Palmitate, Pyridoxine Hydrocholride, Riboflavin, Thiamin Mononitrate, Yellow #6, Chromium Nicotinate Glycinate Chelate, Folic Acid, Molybdenium Glycinate Chelate, Selenium Glycinate Complex, Microcrystaline Cellulose, Biotin, Potassium Iodide, Vitamin K (Phytonadione), Magnesium Carbonate, Vitamin D3, Vitamin B12 (Cyanocobalamin). [1]

Does WonderSlim work?

How effective WonderSlim is depends on the user. While some people have stated that it works for weight reduction, others have said it doesn’t. Put simply, this diet program involves reducing your meal portions and minimizing your overall daily calorie intake, which can result in weight-loss over time. However, it only works if you’re able to stick to the plan and take the provided supplements and eat the healthy foods on a daily basis.

You may consider substituting WonderSlim with a more convenient product that is backed by amazing dieter support such as Leptigen.

How much does WonderSlim cost?

There are three WonderSlim programs mentioned on the official website, and these include the Basic (starting at $120.46), the Core (starting at $141.07), and the Premium (starting at $39.95). Shakes, bars, entrees, soups, breakfasts and supplements can also be purchased separately via the official website.

How should I take WonderSlim?

In order to follow the WonderSlim plan, you need to eat six times a day. This is basically every 2-3 hours. This includes a WonderSlim breakfast, two meal replacement products, a serving of fruit, one WonderSlim bar, two servings of vegetables, an entrée and a WonderSlim dessert. All of these foods and supplements are provided in the kit you choose.

How do I contact customer service?

You can contact WonderSlim customer service by calling 1-800-295-7600. There is also an email form provided on the official website, which can be filled out and submitted at any time.

Can I contact WonderSlim through social media?

Yes, you can contact them on their Facebook or Twitter.

Can I take WonderSlim if I have a health condition?

People with health conditions and those taking prescription drugs need to speak with a licensed doctor prior to starting WonderSlim. Also, women who are pregnant or nursing a child and people under the age of 18 must consult a physician before trying WonderSlim.

What do users like about WonderSlim?

Some customers like that WonderSlim offers a wide array of meals, supplements, desserts and snacks. Also, some users appreciate that WonderSlim is suitable for women and men of all body types.

What do users NOT like about WonderSlim?

Some users do not like the taste of WonderSlim shakes. Furthermore, some customers have stated that WonderSlim is quite expensive and the foods and supplements can leave you feeling hungry.

Are artificial sweeteners used in WonderSlim shakes?

Yes, some WonderSlim shakes contain Sucralose.

Can you customize a WonderSlim diet kit?

Yes, you can customize a WonderSlim diet kit (according to the company website).

Do you have to exercise with WonderSlim?

No, you do not have to exercise with WonderSlim, but regular exercise is encouraged for weight-loss and overall health. [2]

Can you still drink coffee and tea with WonderSlim?

Yes, you can still drink coffee and tea with WonderSlim, but these beverages must be non-caloric.

Do you know of any special deals or discounts on WonderSlim?

At this time, we’re not aware of any special deals or discounts on the WonderSlim official website. However, recently many of our readers have been going crazy about Leptigen’s Special Trial Offer, which is just the cost of shipping and handling. Click here to give it a shot.

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Dietspotlight Author
About the Author:

Summer Banks, a content strategist at Leptigen, has researched over 5000 products in the past 10 years. She has years of nursing training, experience as a manager responsible for 15 supplement brands, and completed coursework on Food and Nutrition from Stanford University. full bio.

Rating: 2.9. From 47 votes.
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User Comments (38)


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I am drinking the meal replacement shakes, 5 to 7 a day. This is day 5 for me and I have lost 17 pounds. I know it sounds crazy, I had to weigh myself a few time to make sure the scale was reading right. I am not eating anything, that is the hard part, and I started a weight lifting program on day 1 of this diet. Fighting the cravings is the hard part, you have to want to lose weight in the worst way. I just found out I have diabetes and I developed a blood clot, so I had a lot of incentive to lose weight quickly. Also I need to lose about half my body weight.

You can go to Youtube and type in wonderslim to see testimonials of regular people on this diet.


I have done a lot of research on wonderslim, and I have found no bad reviews. the Impatient dieter on youtube gives A LOT of helpful info for this diet and several other helpful hints on being successful at dieting.


So glad to read about someone else recognizing the MF soy issue. I lost 30 lbs on MF but I had to stop using it because I was getting terribly sick from the soy. I’m excited to checkout WS smile


I’ve tried MF in the past & although it was effective, it was absolutely DISGUSTING!!! I’ve been using Wonderslim for about 2 weeks now & the food is by far the best I’ve tasted. No need to add spices, etc. and I’m losing weight! No thought has to be put into it….just follow the plan. I love it!

Shaylee norman

Sweet! Good job I did MF also and had great success but was so expensive with no discounts no breaks anything and I just stumbled across wonder slim three days now I like the food it taste good !


Just started wonderslim 3 days ago. I’m the worst dieter ever and I don’t struggle with a lot of weight just abou 15 pounds I’d like to lose. My twin sister did medifast about 6 years ago and dropped 10 pounds fast, but she is dedicated. I thought the food was terrible. WS shakes are great! Chocolate creme and chocomint creme taste great and you can drink them easily, no chalkiness. The shaker they send with them is perfect and I just use the water cooler at work and shake a little and it mixes easily. Love the Vegetarian Joe, esp with some iceberg lettuce leaves, easily makes lettuce wraps almost like PH changs. Oatmeal tastes much better than Medifast, not like your mother’s oatmeal but much easier to eat. The bars are better and don’t have the xylitol or mannitol flavor so many have. I’d highly recommend WS and price is much better than medifast.

Shaylee norman

Well I decided to try wonder slim after gaining some weight back I did medifast for a year and had great results but the price was so expensive I found wonder slim and ordered right away! I found myself waiting with excitement to get it in the mail I got it in the mail this is day number three and I’m down 2.5 pounds it’s basically the same concept as medifast but their food I think personally taste better it’s crunchy it’s well seasoned I love it and did I mention the price oh my god so affordable I will keep an update .


How has your weight loss gone on Wonder Slim, Shaylee? I too did the medifast, but it’s just so expensive that I’m exploring other options. Is WS 5 meal replacements then one lean and green like MF? Successful??

Your NAngieame

I don’t know if I’m “doing Wonderslim right”, but for about 1.5 months I’ve eaten a bar for breakfast with low fat milk, eaten a bar for a mid morning snack, eaten a bar for lunch, eaten a bar for a mid afternoon snack, a reasonable dinner, and sometimes a bar as an evening snack. I’m a type 1 diabetic on an insulin pump. My levels are great this way! I use a variety of bars and have not found one I don’t like, I have more energy. I sleep better. I’ve lost a little bit, so I don’t see see a reason to stop. It is easy, and I pay less than $200 per month. I do not get hungry unless it is time to eat another bar which fills me up. I drink water or flavored water, but I’m sure I need to drink even more.


I was on Nutrisystem about 5 years ago and loved it. I would have returned, except that discontinued my favorite lunch, which was fettachini alfredo. Then I found WonderSlim. So here’s my meal plan (I’m following Nutrisystem’s OLD plan):

Breakfast: 1 cup cheerios with 1/2 cup fat free milk
AM Snack: 1/2 cup low fat cottage cheese, 1/2 cup melon
Lunch: Alfredo with a huge salad. I put the alfredo over my salad after it cools for a bit so I don’t need to use salad dressing!
PM Snack: Chobani yogurt (yup, the one with the fruit in it that’s 120 calories)
Dinner: 4 oz. lean protein, steamed veggies (non starchy veggies), 1/2 Tbsp. grass fed butter
Dessert: 1 Wonderslim Vanilla pudding (I add some vanilla extract into it for a more vanilla flavor)

Calories: vary between 927 – 1080 (depends on whether or not I have chicken breast or 93% lean ground beef)
Fat: 16-23 g
NET carbs: 100
Sodium: 1560 g
Fiber: 15 g
Sugars: 69 g

Bernardine Wey

Very good written post. It will be beneficial to anyone who utilizes it, as well as me. Keep up the good work – i will definitely read more posts.

rolig skylt

I do believe this can be just about the most info for me. With this particular contented mastering your own content. However need to opinion for quite a few standard items, It taste is wonderful, the articles or blog posts is really superb : Deb. Very good activity, best wishes

radica ramlal

well i would like to know if i could use it because i want to lose weight but it seems like nothing is happening.


hi i will like to know if the wounder slim tablet will work and if any one used it

johan homan

question 1) how many bottles of tablets must be used to loose wieght?
question 2) can my 8 year ols son use this tablets?




Hello – I work nights – at night, I get HUNGRY – like 3 am – does anyone suggest anything that might take off the “edge” at that time of the night – oops – morning? What foods/treats are the best? ANY INFO would be MUCH appreciated. Thanks!!


The best thing to do if you are on this diet and get hungry prior to a meal, is have an extra shake. It is better to have the 100 calories than the 500 calories of impulse snacking. I had to do that for the first week on WS. Now, month three in and 27 pounds lighter, and I don’t have to do that anymore. In fact, I find that it is a chore to get all the food in during the day…I am just not that hungry anymore.


I have just started with Wonderslim. I tend to be a picky eater but the food tastes fine. Is it a prime rib at Outback Steak House? No. This is a diet, not a gourmet restaurant. The food is edible and fairly tasty and if you stick to the plan, more or less, you will lose weight. I lost 7 pounds the first week. I don’t follow the plan exactly, I have a very small baked potato as a starch or some carrots if I get really hungry but I still am losing.


I can’t believe how sweet these products are, sickeningly sweet. I had used Optifast and the chocolate shake was delicious. I had hoped to continue with something just as good and cheaper. There’s really no comparison. I don’t understand why anything has to taste that sweet. Very disappointing…


I am starting month two on WonderSlim, and I love it! I have lost 17 pound, and recommend this product. Just realized I can “customize” so I will get all my favorites, and try some new.


17 pounds in one week, wow. Can I ask you how much you want to lose. I was thinking of trying Ideal Protein but all the sucralose in it scares me.


hi all, I am about to start wonderslim on the 2 wk plan and have a problem. I don’t sleep at night and tend to graze on fruit or small meals and am diabetic. I need to know what to do during this time at night any suggestions?


I use to have the awful habit of getting up in the middle of the night and looking for food. What worked for me was this. Everyday I would make a package of sugar free jello- I would add a can of fruit in natural jucies drained and would eat that when I got up at night. It did not stop me from losing weight and really helped me. Hope this idea helps for you. Good luck! I’m thinking about starting on Wonderslim also.


Hello – I am “thinking” of trying WS myself. And, like you, I don’t sleep at night. I work. Anyway, did you ever find out what works for you? What is good? ANY info would be soooo much appreciated. Thanks so much and GOOD LUCK! Pam


1. WonderSlim does have an ingredient list for the products.
2. There are testimonials about the products on the website. Since they are pretty frank, it can help to steer you away from a product that is not as tasty as others.
3. I am using WonderSlim in conjunction with Weight Watchers. I am using the protein bars and chocolate marshmallow snack bars (YUM!) for sweet snacks.
They offer free shipping for orders over $49 and also have an introductory pack with 12 items for $19.99.


Very surprised that anyone could dislike this program!! I lost weight very easily. However, like any program … you must want to lose weight and be ready to so just that. For me, this was the easiest way I have ever lost weight and I HAVE TRIED THEM ALL!! I wan not hungry after the first few days. The meal replacement shakes are the best on the market. And you can do so much with them, or make them into a yummy pudding. Just love it!! Have lost 25 lbs so far!!


Did you ever cheat on the diet? I’m not sure if my lean and green dinners are always perfect. Just curious if you still had great results? Sometimes I have a small spelt cracker with soup just because I miss crunch.