If you have been searching for an effective solution for shedding extra pounds, you have probably come across WonderSlim, a weight loss meal delivery service famous for its meal replacement products. The service promises fast results with minimized effort, which sounds perfect. However, before you invest your cash in WonderSlim products, let us first find out what you can expect to gain or lose if you opt for the program.
Stick around as we discover how WonderSlim works, how easy it is to follow, how much it costs, what kinds of results it produces, and much more in this fact-based WonderSlim review.
What Is WonderSlim
Established in 2001, WonderSlim is a popular weight loss meal delivery that offers proprietary meal replacements and dietitian-endorsed diet plans. Its effectiveness is evidenced by thousands of success stories, with numerous dieters shedding over 100 pounds.
The service offers separate diet plans for men and women as well as specialized weight loss assistance for nursing mothers. Its plans include meal replacements and healthy ready-made meals designed to help you get in the best shape of your life. Exercising is optional. While it may help produce better results, it is not a prerequisite for weight loss.
As a WonderSlim customer, you can expect to eat frequently in small portions and drink lots of water. You can decide how many of your meals are prepared by WonderSlim chefs and how many of them you want to prepare on your own. Weight loss results may vary depending on your current weight, metabolism, lifestyle, and how strictly you adhere to the program. However, if you stick to the prescribed guidelines, steady and healthy weight loss is guaranteed.
WonderSlim For Weight Loss
Before we explore additional details regarding WonderSlim diet plans, we will first answer the most important questions about this weight loss meal delivery program. In this section of our WonderSlim review, we will focus on the science behind the program, its overall restrictiveness and effectiveness, and its potential effects on your health.
Does The WonderSlim Diet Work
The WonderSlim diet does work because it limits your calorie intake, which almost inevitably leads to weight loss. The company no longer makes concrete effectiveness claims, but based on its archives, the average weight loss is 1 to 4 pounds per week.
On the WonderSlim program, you get to consume 1,000 – 1,200 calories a day if you are a lady or 1,500 – 1,700 calories per day if you are a gentleman. This is much lower than the weight maintenance calorie intake of 2,000 for women and 2,500 for men. Since weight loss normally occurs after reducing daily calorie intake to 1,500 in women and 2,000 in men, extra pounds should disappear rather quickly with this rather restrictive regimen.
During the first week with WonderSlim, dieters can expect to lose 3 to 4 pounds. Later on, the expected weight loss is 1 to 3 pounds per week. Keep in mind that results may significantly differ from one week to another.
It is further important to note that these are average values. Based on user reports, it could be concluded that dieters who had plenty of pounds to shed experienced greater weight loss while on the program. Some of them report losing as many as 4 pounds during the first 3 days or 6 pounds during the first week.
Logically, the total weight loss varies depending on the difference between the current weight and the goal weight. Dieters who needed to lose a large portion of their weight report shedding more than 50 pounds with WonderSlim. The most drastic changes in weight reported include loss of as many as 115 pounds.
In sum, user reports show that the vastest majority of WonderSlim customers are satisfied with their weight loss results. Although there is no definite scientific evidence that would confirm the program’s effectiveness, there is a clear consensus among dieters that this diet indeed works.
Why Does WonderSlim Work
WonderSlim’s effectiveness is the result of 4 crucial factors that have been proven to lead to accelerated but healthy weight loss. These include meal replacement, calorie restriction, increased protein intake, and frequent meals.
Previously in this WonderSlim review, we stated that calorie restriction equals fewer extra pounds. However, the question is what makes WonderSlim more effective than simply eating fewer calories.
In comparison to losing weight on your own, WonderSlim can produce faster and more visible results because its specially designed meal replacements and diet plans help reduce cravings, speed up your metabolism, and accelerate fat burning. Here is how these processes take place.
One of the main reasons why many people fail to stick to more restrictive diets is that they feel hungry all the time, which affects their mood and performance in different aspects of their lives. WonderSlim makes dieting easier by allowing you to eat plenty of proteins.
The company’s signature meal replacements and prepared meals are always protein-rich, which is why they help curb cravings and leave you feeling pretty full in spite of portions being pretty small. Proteins keep you energized as well and prevent you from feeling weak due to the significant decrease in the amount of food consumed.
While there are disputes over the effect frequent meals have on the metabolism, the general consensus is that infrequent and irregular meals are more than likely to cause your metabolism to slow down. This makes sense because your body is not sure when your next meal is going to be, which is why it stores fat to ensure you have enough energy to survive longer periods without food consumption.
With WonderSlim, you get to eat 6 meals a day, which translates to eating something every 2 or 3 hours. This way, you are making sure your metabolism runs efficiently and does not go into starvation mode in which it stores excess fat.
Burning Fat Faster
In order to burn fat more quickly, you should give up unhealthy sugary drinks, say goodbye to refined carbs, and start eating more fiber and protein. These are all important elements of the WonderSlim program. The WonderSlim diet includes high-protein, high-fiber meals and meal replacements and it eliminates bad carbs. Therefore, it allows your body to start burning fat more efficiently.
WonderSlim Food List
As mentioned in the previous sections of this WonderSlim review, the cornerstones of your diet while on the program are Wonderslim meal replacements and ready-made meals. However, you are encouraged to enrich your diet with a limited selection of healthy foods you can purchase and prepare on your own. To eliminate guesswork, the service provides a full list of foods you can eat, along with the exact quantities you are allowed to consume.
Your average day on the program includes foods you receive in your kit, 8 or more glasses of water, and 1 or 2 healthy meals you prepare yourself. The number of homemade meals you enjoy depends on the meal plan you choose. Your meals should always include:
- At least 3 ounces of protein;
- At least 2 servings of veggies;
- 1 serving of starch.
If you want your diet to be less restrictive or if you have a lot of pounds to shed, you can add other foods, increase your calorie intake by 200 calories, and still lose weight. You can enrich your meals with:
- Optional extras (e.g. condiments).
Let us now convert these general categories into concrete foods. Here is a handy categorized list of foods you can use when preparing your healthy meals at home.
A single serving of vegetables in your meals should contain about 25 calories. One vegetable serving is equal to 1 cup of raw veg or ½ cup of cooked veg. You are allowed to use the following veggies:
- Brussels sprouts;
- Green or yellow beans;
- Green or red peppers;
- Pea pods;
- Romaine lettuce;
- Summer squash;
When it comes to fruit, the selection is more limited and includes about 20 options. A single fruit serving should contain approximately 60 calories. Your serving of fruit can contain:
- 4 ounces of apples;
- 8 dried apricot halves;
- 4 apricots;
- 4 ounces of bananas;
- ¾ cup of blackberries;
- ¾ cup of blueberries;
- 3 ounces of cherries;
- 3 ounces of grapes;
- ½ of a grapefruit;
- 1 cup of melon;
- 6 ounces of oranges;
- 6 ounces of peaches;
- 4 ounces of pears;
- ¾ cup of pineapple;
- 5 ounces of plums;
- 3 dried plums;
- 3 dried prunes;
- 1 cup of raspberries;
- 1 cup of strawberries;
- 8 ounces of tangerines;
- or 1 ¼ cup of watermelon.
Proteins you can enjoy with WonderSlim are divided into 2 categories: lean and very lean. A serving of lean proteins contains about 170 calories while 1 serving of very lean proteins contains around 140 calories.
A serving of approved lean proteins can contain:
- 3 ounces of beef, including sirloin tip, flank steak, choice, round roast, and tenderloin;
- 3 ounces of veal chop or roast;
- 3 ounces of pork, with options including tenderloin, center chop, and lean ham;
- 3 ounces of Atlantic salmon or catfish;
- 3 ounces of low-fat cheese with no more than 3 grams of fat per ounce;
- 3 ounces of low-fat deli meat with no more than 3 grams of fat per ounce;
- 3 medium eggs, which is also the weekly limit for eggs;
- or 10 ounces of curd-regular tofu.
A serving of very lean proteins can include:
- 4 ounces of turkey breast, skin removed;
- 4 ounces of chicken breast, skin removed;
- 4 ounces of cod, flounder, trout, halibut, mahi or tuna;
- 4 ounces of clams, scallops, crab, lobster or shrimp;
- 4 ounces of fat-free cheese;
- 8 ounces of fat-free or low-fat cottage cheese;
- 8 ounces of egg substitute;
- 8 egg whites (8 ounces);
- 3 ounces of meat alternative crumbles;
- 1 black bean burger patty;
- or 4 ounces of cooked edamame soybeans.
You can enjoy fats as long as you limit your intake to 45 calories per serving. Your 1 serving of fat can be:
- 1 tablespoon of soybean or canola oil;
- 4 tablespoons of margarine free from trans fats;
- 1 teaspoon of mayonnaise;
- 1 tablespoon of reduced-fat mayonnaise;
- 8 grams of walnuts;
- 1 teaspoon of butter;
- ½ tablespoon of peanut butter;
- 2 tablespoons of low-fat dressing;
- 1 teaspoon of olive oil;
- or 8 large and ripe olives.
A serving of starches should not have more than 80 calories. For your serving of starches, you can choose:
- ½ cup of whole-grain cereal;
- 2 slices of whole-wheat diet bread;
- 1 slice of whole-wheat bread;
- ½ whole-grain bagel (1 ounce);
- ½ whole-grain English muffin;
- 1 low-fat, whole-grain waffle;
- ½ whole-grain pita bread (6-inch);
- 1 ounce of whole-wheat roll;
- 6 low-fat crackers;
- ¾ ounces of pretzels;
- 3 cups of air-popped popcorn;
- 2-4-inch rice cake;
- 1/3 cup of cooked pasta;
- 1/3 cup of cooked brown rice;
- ½ cup of frozen corn or peas;
- 3 ounces of mashed potato, sweet potato or yam;
- ½ cup of cooked oatmeal;
- or 1/3 cup of whole-grain couscous.
You have to be careful with dairy because most products are off limits. You are allowed to consume 50 calories of select dairy per serving, which translates to:
- 4 ounces of non-fat skim milk;
- 4 ounces of non-fat, fruit-flavored yogurt;
- 3 ounces of non-fat, plain yogurt;
- or 4 ounces of non-fat Greek yogurt.
To make your meals tastier and more satisfying, you can add optional extras that contain fewer than 20 calories per serving. For your serving of extras, you can choose:
- 1 tablespoon of non-fat cream cheese;
- 4 tablespoons of non-fat margarine;
- 1 teaspoon of reduced-fat margarine;
- 1 tablespoon of non-fat sour cream;
- 2 tablespoons of non-fat salad dressing;
- ¼ cup of salsa;
- 1 tablespoon of taco sauce;
- 1 tablespoon of ketchup;
- 2 tablespoons of sugar-free syrup;
- 2 teaspoons of low-sugar jam or jelly;
- or 1 packet of artificial sweetener.
When it comes to beverages, you can enjoy a range of non-caloric drinks. As expected, sugary sodas and fruit juices are not allowed. You can drink:
- Spring water, with or without carbonation or flavoring;
- Low-sodium bouillon;
- Sugar-free drink mixes;
- Diet or club soda;
- Black coffee or tea;
- Herbal tea, which is not recommended for nursing mothers.
Is WonderSlim Healthy
WonderSlim is a health-centric weight loss program that promises to improve your overall well-being. It eliminates a variety of unhealthy foods from your diet, prevents overeating, and helps you maintain balanced nutrition with regular healthy meals.
So far, no major side effects of WonderSlim have been identified. As long as you are not allergic to any ingredients in WonderSlim products, such as dairy, and you do not suffer from health issues like diabetes or hypoglycemia, it is perfectly safe.
Minor transient side effects may include diarrhea, constipation, upset stomach, headache, nausea, and gastrointestinal problems. However, these issues are normal when radically changing your diet and they are rather rare among dieters.
It is important to note that WonderSlim goes an extra mile to ensure you do not only get slimmer but healthier as well. It provides a variety of supplements that allow you to get all the vitamins and essential fatty acids your body needs. Therefore, by following the program and using WonderSlim products, you can actually improve your health.
How Does WonderSlim Delivery Work
To get started with WonderSlim, you should simply choose a plan that fits your schedule. The diet plans come in 3 standard versions: Basic Essentials, Core Classic, and Premium Complete. Each plan is available in 2 iterations – for women and for men.
The plans differ in the number of ready-made meals and meal replacements included in your deliveries, ranging from 4 to 7, and the average daily calorie count, ranging from 1,000 to 1,700 calories. We will explore the plans in greater detail in the following section of this WonderSlim review.
The service has a vast range of diet items in its offer, including meals, snacks, drinks, bars, and more. The company’s products are included in each diet plan, but they are available for a la carte ordering as well.
The great news is that you do not have to subscribe to get a diet plan. You can simply order a kit of your choice and opt for a one-time purchase. However, if you subscribe, you can save 15% on your orders and you can cancel at any time. The decision is completely up to you.
WonderSlim is as flexible as it gets, allowing you to adjust your deliveries to your unpredictable schedule.
WonderSlim Meals and Recipes
To make sure you do not only lose weight but also diversify your diet, WonderSlim has included more than 150 items in its offer. The items are divided into 8 categories: drinks, bars, snacks, entrées, soups, desserts, breakfasts, and supplements.
In the drinks section, you can find around 50 items. These include meal replacement shakes, hot drinks like hot chocolate and cappuccino, fruit drinks, including meal replacement, protein, and energy drinks, smoothies, and fiber drinks such as iced tea. This section features WonderSlim’s proprietary Fast Boost energy drinks designed to support your immune system while you are losing weight.
The bars section features nearly 40 items. The bars are divided into 5 sub-categories: meal replacement bars, snack bars, gourmet bars, wafer bars, and protein & fiber bars. They come in all popular flavors, including salted toffee, marshmallow chocolate, chocolate nutty almond, vanilla, peanut butter, and cinnamon.
The snacks section features around 70 products. It is divided into 8 sub-categories: chips & crisps, pretzels, chocolates & sweets, jerky, snack bars, granola, trail mixes, and brownies. In this section, you can find WonderSlim’s own Snackergy protein snacks, designed to keep you energized and full and thus prevent constant cravings.
The entrée section features 20 items divided into 2 sub-categories. You can opt for lite entrées, which are high in protein and low in calories, and pasta entrées, which are comforting, low-calorie dishes that taste like cheat meals.
Breakfasts, Soups & Sweets
In addition to meal replacements and entrées, you can choose from half a dozen soups, a dozen of breakfasts like pancakes, cereals, and oatmeal, and nearly 20 desserts like puddings and brownies for when you are craving something sweet.
Finally, the service offers about 10 weight loss supplements that come in the form of tablets, capsules, and energy drink mixes. You can opt for multi-vitamin tablets, essential fatty acid capsules, lipotropic blend capsules, and more.
If you have special dietary requirements, you can filter the products by diet type. You have 15 options at your disposal, including kosher, gluten-free, no gluten-containing ingredients, vegan, vegetarian, non-GMO, aspartame-free, sugar-free, fat-free, low-fat, low-carb, low-sodium, wheat-free, lactose-free, and bariatric.
Now that you know what the menu looks like, it is time to get better acquainted with the service’s 3 diet plans: Basic Essentials, Core Classic, and Premium Complete.
With the Basic Essentials plan, you get 4 WonderSlim meals per day. The daily meals include 3 meal replacements and 1 bar or snack. Apart from the meals in your kit, the program requires you to eat 2 additional healthy meals per day, including lunch and dinner. You prepare these 2 meals yourself, using the ingredients you purchase and following the WonderSlim guidelines.
Thus, your day with the Basic Essentials plan includes a breakfast, a morning snack, a lunch, an afternoon snack, a dinner, and a dessert. Both men and women enjoy the same number of meals per day, but men get to add extra servings of protein, dairy, and other nutrients to the meals they prepare, so their daily calorie intake is greater in comparison to that of women.
If you opt for the Basic Essentials for women, your daily calorie intake is 1,000 calories, including 110 g of protein (45%), 100 g of carbs (40%), and 15 g of fat (15%). If you want to consume 1,200 calories per day, you should add 1 dairy serving, 1 fruit serving, and 1 optional serving to the meals you prepare yourself.
If you opt for the Basic Essentials for men, your daily calorie intake is 1,500 calories, including 150-170 g of protein (45%), 140-160 g of carbs (40%), and 15-35 g of fat (15%). If you want to increase your daily calorie intake to 1,700 calories, you should add 2 starch servings, 1 vegetable serving, and 1 optional serving to the meals you prepare yourself.
You can opt for the 14-day version or the 28-day version of the plan.
With the Core Classic plan, you get to enjoy 5 WonderSlim meals per day. These include 3 meal replacements, 1 lite entrée or soup, and 1 bar or snack. In addition to WonderSlim meals, you get to enjoy 1 healthy meal you prepare yourself and additional fruit and veggie servings.
Just like with the Basic Essentials plan, your day with the Core Classic plan includes a breakfast, a morning snack, a lunch, an afternoon snack, a dinner, and a dessert. The main difference between the two plans lies in the fact that you get to enjoy a ready-made lunch and only prepare the dinner yourself with the Core Classic plan. Once again, men get to add extra servings to the meals they prepare because they need more calories.
If you choose the Core Classic plan for women, you get to eat 1,000 calories per day, including 110 g of protein (45%), 100 g of carbs (40%), and 15 g of fat (15%). If you want to eat 1,200 calories per day, you should add 1 dairy serving, 1 fruit serving, and 1 optional serving to the meal you prepare.
If you opt for the Core Classic plan for men, you get to eat 1,500-1,700 calories per day, including 150-170 g of protein (45%), 140-160 g of carbs (40%), and 15-35 g of fat (15%). Your daily calorie intake varies depending on your food choices.
You can choose between the 14-day and 28-day versions of the plan.
Finally, with the Premium Complete plan, you get to enjoy 7 WonderSlim meals per day. The meals in your delivery include 3 meal replacements, 1 breakfast, 1 lite entrée or soup, 1 bar or snack, and 1 dessert. Plus, you get to prepare one healthy meal on your own.
During the day, you get to enjoy a breakfast, a morning snack, a lunch, an afternoon snack, a dinner, and a dessert and you only prepare the dinner yourself. Men get extra servings indicated in the guidelines provided by WonderSlim.
With the Premium Complete plan for women, your daily calorie intake varies between 1,000 and 1,200 calories, depending on your food choices. You get to consume 110-120 g of protein (45%), 100-120 g of carbs (40%), and 15-25 g of fat (15%).
With the Premium Complete plan for men, you get to eat between 1,500 and 1,700 calories per day, consuming 150-170 g of protein (45%), 170-190 g of carbs (40%), and 25-28 g of fat (15%). You can opt for the 14-day, 28-day or 3-day trial version of the plan.
With all the plans, you get to choose the meals and meal replacements you want to receive in your delivery. You do not have to eat the meals in the same order every day – you can rearrange them in accordance with your schedule. In order to enhance your results, you should never skip a meal, you should avoid frying, and you should drink at least 8 glasses of water per day.
Nursing mothers have the same 3 diet plans at their disposal, but they follow a distinct set of guidelines that are designed in accordance with their special dietary needs. The primary difference between the standard WonderSlim rules and those that apply to nursing mothers is the daily calorie count. Namely, it is increased to 1,800 – 2,000 calories in order to allow for a steady weight loss of approximately 1 pound per week without interfering with milk production.
WonderSlim Diet Kit Extras
In addition to meals and meal replacements, WonderSlim kits include a Food Shopping List to help you get the right ingredients for the meals you make yourself, a Food & Activity Diary to keep track of your meals and physical activity, multi-vitamins, essential fatty acid softgels, and a 20 oz. WonderSlim shaker bottle. Plus, to help you stay on track, the service provides the WonderSlim Lifestyle Guide, which comprises 12 steps and teaches you everything you need to know about proper nutrition, exercising, and behavior modification techniques.
How Much Does WonderSlim Cost
If you opt for a WonderSlim diet plan, you can expect to pay $1.25 to $2.20 per meal, which is surprisingly affordable. The price you pay depends on the plan type you opt for as well as the number of food items you want to receive in your diet kit.
With all the plans, you can opt for the 2-week, 4-week, 8-week or 12-week kit. If you just want to give the service a try, you can purchase the convenient 3-day easy-start kit, which gives you a sense of what the Premium Complete plan offers.
Whichever plan you opt for, you get to save plenty of cash in comparison to individual product prices. More specifically, you can save between 20% and 43% on every order. Take a look at the table below and discover exactly how much each plan costs.
|Number of weeks||Meals per day||Total price||Price per meal|
|Number of weeks||Meals per day||Total price||Price per meal|
|Number of weeks||Meals per day||Total price||Price per meal|
The prices listed above apply to one-time purchases. As mentioned earlier in this WonderSlim review, you get a 15% discount if you opt for a subscription.
As far as WonderSlim a la carte products go, they are all individually priced. You can handpick items one by one or opt for value bundles that allow you to save some cash on your orders. The prices range from $6.99, which is how much multi-vitamin tablets costs, to $287.04, which is the price of the 24-box protein bar value bundle. The prices of diet plan kits are fixed and allow you to get more products you love for less money.
Within the contiguous US, shipping is free on orders of $69+. Orders under $69 come with a $7.99 flat shipping fee. For orders outside the contiguous US, there is no free shipping and the shipping fee depends on location.
Where Does WonderSlim Deliver
WonderSlim products are available throughout the United States, including Alaska, Hawaii, and Puerto Rico. Within the continental US, orders are shipped via FedEx. Deliveries to Alaska, Hawaii, and Puerto Rico are made via USPS Priority Mail Service.
The service offers international shipping as well. Countries where WonderSlim products are available, other than the US, include Australia, Bermuda, Canada, the UK, Ireland, Italy, Japan, the Netherlands, and New Zealand. International orders are shipped via FedEx International Priority and FedEx International Economy.
It is important to note that WonderSlim boasts a unique 150% money-back guarantee. If you are not satisfied with your order for any reason, you can return the products within 60 days after the date of purchase, no questions asked, and receive a 150% refund (shipping costs not included) or exchange the undesired products for other products of equal value. Orders shipped internationally can only be returned for a refund.
Finally, it is good to know that orders worth $200+ require a signature upon delivery.
WonderSlim Pros And Cons
To make sure WonderSlim meets all your standards and expectations, it is important to know its biggest advantages and disadvantages. With a short overview of its pros and cons, you can easily decide if WonderSlim is the right meal delivery service for you.
- Dietitian-endorsed weight loss program
- 150+ healthy diet items on the menu
- Plenty of meal options for special diets
- 3 diet plans for different needs and budgets
- Special assistance for nursing mothers
- All plans are fully customizable
- A la carte ordering option
- No subscription required
- Excellent rewards program
- 150% money-back guarantee
- Free shipping on $69+ orders within the contiguous US
- No dedicated plans for special diets
With WonderSlim, you get delicious meals prepared by pro chefs at affordable prices. To find out what kinds of delights you will receive in your delivery, we have chosen a couple of sample dishes that accurately represents its offer and can help you decide if it is the right service for you.
Which one is better – WonderSlim or Nutrisystem?
Both WonderSlim and Nutrisystem are excellent meal delivery services offering healthy meals that can help you lose weight and improve your general health. Find out more in our detailed WonderSlim vs Nutrisystem comparison.
What kind of ingredients does WonderSlim use?
WonderSlim uses healthy ingredients and offers various options for special diets, including kosher, gluten-free, vegan, vegetarian, non-GMO, aspartame-free, sugar-free, fat-free, low-fat, low-carb, wheat-free, lactose-free, and bariatric items.
What is the nutrition information for WonderSlim items?
With the WonderSlim plans for women, the daily calorie intake is 1,000–1,200, including 110-120 g of protein (45%), 100-120 g of carbs (40%), and 15-25 g of fat (15%). Men get to eat 1,500–1,700 calories, including 150-170 g of protein (45%), 140-190 g of carbs (40%), and 15-35 g of fat (15%).
Does WonderSlim offer fat replacer ingredients?
WonderSlim currently does not offer fat replacer products.
Is WonderSlim the same as Medifast?
Both cater to people who want to lose weight in a healthy way. They generally use healthy, natural ingredients. What sets Medifast apart is that the program was developed by a doctor and reviewed by more than 20,000 physicians and nutritionists.
Which one is better – Medifast or WonderSlim?
Both are excellent meal delivery services that can help you lose weight and stay healthy. Their meals are low in calories and fat but rich in lean protein and nutrients. Check out our objective WonderSlim vs Medifast comparison.
Where to buy WonderSlim products?
All products are available on the WonderSlim website. You can opt for a diet plan or order a la carte.
Does WonderSlim work?
The diet program minimizes your daily calorie intake, which should result in weight loss over time. However, you will get good results only if you stick to the plan day after day.
What can I make with WonderSlim shakes?
There are numerous ways to prepare WonderSlim meal replacement shakes. For example, you may prepare the puddings as listed on the mix packet or use your blender to combine your shake with your meal plan’s fruit serving.
Can you follow the Medifast diet with WonderSlim?
While both Medifast and WonderSlim diet plans provide some unique benefits, they use different methods and foods to promote weight loss. Therefore, you should either follow one or the other.