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WonderSlim Review 2024: Easy Weight Loss?

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Author Kenaz Filan
Kenaz Filan
Updated on Apr 3rd, 2024
Fact checked by Deborah Leigh


At first glance, WonderSlim appears very similar to other weight loss meal delivery services. WonderSlim offers meal bars, meal replacement shakes, and low-calorie meals. But a closer glance reveals some differences in WonderSlim’s weight loss approach. 

I’ve done a deep dive into WonderSlim’s different diet offerings. I’ve considered the taste, nutritional value, and cost of the meal plans offered and compared them to those of its competitors. I’ve read reviews from satisfied and unsatisfied customers, consulted my colleagues, and scanned medical and nutritional journals to get professional opinions on WonderSlim’s approach.

Overall, I think WonderSlim can be a good choice for short-term weight loss. But if you’re looking to make long-term changes in your eating habits and keep the weight off after you lose it, I think a better option is to choose a diet meal delivery service like BistroMD that offers fresh, low-calorie prepared meals.

Read on to learn more about WonderSlim and find out if it’s a good fit for you. 



Caters to a number of different dietary needs

Lots of processed food

Gets high marks for taste

You have to cook many of your own meals

WonderSlim products available on Amazon and other outlets

Fewer choices than many meal delivery services

What’s on the Wonderslim Menu

WonderSlim offers diet meals, shakes, meal replacement bars, and breakfast cereals. All WonderSlim items are shelf-stable, so you simply put them in your pantry until you’re ready to eat.

Meal Options 

WonderSlim offers 3 weight loss plans: the Basic Plan, the Core Plan, and the Premium Plan. Regardless of the plan chosen, Wonderslim emphasizes the importance of consuming all recommended meal replacements and foods to maintain optimal nutrition, curb appetite, and support lean muscle. A screenshot of WonderSlim's 3 plans: Basic, Core, and Premium

The Basic Plan includes 4 portion-controlled WonderSlim meals per day. Customers select from a menu of meal replacement shakes, smoothies, bars, and snacks. Individuals on this plan incorporate a variety of healthy foods into their diet. On this plan, customers consume 6 meals a day, ensuring regular eating intervals of approximately once every 2 or 3 hours.

WonderSlim’s Core Plan is their most popular option. It consists of 5 WonderSlim meals per day, including shakes, smoothies, bars, and snacks. In addition, customers get to choose 1 WonderSlim lunch dish each day. For the evening meal, a balanced low-fat dinner comprising lean protein, starch, and vegetables is recommended.

The Premium Plan from WonderSlim provides the most comprehensive meal selection, with 7 WonderSlim meals per day, including dessert options. This allows you to satisfy your cravings for sweets while still maintaining your weight loss goals.


Is WonderSlim Good For This Diet?

Weight Loss

Yes, WonderSlim is good for weight loss dieters


Yes, WonderSlim has keto products


Yes, WonderSlim has kosher products


Yes, WonderSlim has diabetic-friendly products


Yes, WonderSlim has products


Yes, WonderSlim has low-sodium products

Low Carb 

Yes, WonderSlim has low carb products

High Fiber

Yes, WonderSlim has high fiber products


Yes, WonderSlim has lactose-free products


Yes WonderSlim has low-fat products


Yes, WonderSlim is suited for bariatric patients


No, WonderSlim is not good for organic diets


No, WonderSlim may not be good for dieters with severe allergies


As with most diet meal delivery services, WonderSlim doesn’t allow much customization. However, with most WonderSlim plans you’ll be preparing 1 or more meals for yourself with the help of the WonderSlim suggested menu. This gives you more flexibility than plans that provide dieters with all meals, though it also gives you more chances to cheat. A screenshot of WonderSlim's Diet Types selection

WonderSlim offerings are suited for a number of different dietary needs. Most of its meals are vegetarian, diabetic-friendly, and kosher. There’s also a good selection of gluten-free products, though WonderSlim isn’t certified gluten-free. Celiacs or those with severe gluten sensitivity should check out our list of the best gluten-free meal delivery services.

WonderSlim has lactose-free and vegetarian products, but there are no menu filters that let you sort out specific ingredients. You’ll have to check the ingredients on each WonderSlim offering. And if you have severe allergies, there’s a risk of cross-contamination, as meals are prepared in the same facility. Check out our list of the best allergy-friendly meal delivery services instead.


WonderSlim’s products are shelf-stable, so they don’t need to be shipped with cold packs and insulation. Since WonderSlim is sold in a number of online stores, your order may arrive in a Walmart, Amazon, or other box. If you order from the company, your box will be labeled with the name of WonderSlim’s parent company, Diet Direct. Promo photo of different WonderSlim products

WonderSlim’s meal boxes fit well in your pantry or on your kitchen shelves. Each box is clearly marked and contains complete nutritional information for the meal or meal replacement it contains. In many cases, calorie, carb, and protein counts are emblazoned on the front of the packaging. Some snacks, like the Pea Protein Chips and Savory Crisps, come in single-serving bags.

Cooking with WonderSlim

WonderSlim’s meals and meal replacements require no cooking skills. You add cold water to WonderSlim shakes, open the packaging on WonderSlim bars, and add hot water to WonderSlim’s shelf-stable prepared meals. All you need is a microwave or a tea kettle. But while the WonderSlim diet is quick and convenient, it also relies on a lot of heavily processed food. Screenshot of the ingredients list for WonderSlim Double Chocolate Protein Cake

WonderSlim’s meals are shelf-stable because they’re loaded with preservatives and artificial colorings. According to the USDA, the ingredients in the Double Chocolate Protein Cake are all officially safe for human consumption. But I think eating fresh, lower-calorie meals is a healthier way to lose weight. That’s why I recommend you check out our list of the best low calorie meal delivery services.

Shortlist of My Favorite Meals

Best Breakfast: Protein Pancake & Waffle Mix

Screenshot of Wonderslim Blueberry and Chocolate Chip Protein Pancake & Waffle Mix

This is 1 of the most complicated meals on the WonderSlim menu, as you have to cook the pancakes on a stovetop after adding water to the mix. But when you’re done, you get to enjoy a pancake breakfast that has 12 grams of protein and just 120 calories. The Chocolate Chip flavor has 140 calories, but for chocolate, I’ll take an extra 20 calories.

Protein Pancake & Waffle Mix is available in Original, Blueberry, and Chocolate Chip flavors. If you can’t decide, you can always order the Variety pack and try them all.

Best Meals & Entrees: Vegan Curry

Vegan Curry from WonderSlim

WonderSlim’s vegan curry comes in 2 flavors, Lentil and Vegan Chicken. Both recipes offer 15 g of plant-based protein with 4 g of fiber, 1 g of fat, and no added gluten or sugar. Put a packet in a bowl with 6 oz of lukewarm water, microwave for 3 minutes, stir, and you have a lunch or dinner that’s more filling than you would expect from 100-110 calories.

These curries have fewer artificial ingredients than many of WonderSlim’s other meals, though they do contain artificial colors and Polysorbate-80, a preservative commonly found in processed foods.

Best Snacks: Pea Protein Snacks

Pictures of the different flavors of WonderSlim Pea Protein Chips

WonderSlim's Pea Protein Chips are a light, nutritious alternative to junk food. Each 1-ounce bag provides 10 g of pea protein and 10 g net carbs with no added sugar, saturated fat, cholesterol, or gluten and only 120 calories. They’re also certified gluten-free, accommodating those with dietary restrictions. Pea Protein Chips come in Salt & Vinegar, Cool Ranch, and Hickory BBQ flavors.

You get 7 bags per box and a Variety Pack containing all 3 flavors is available. 

Best Bars: Gourmet Snack Bar

Pictures of two boxes of WonderSlim's gourmet snack bars

WonderSlim’s Gourmet Snack Bars are tastier than most meal replacement bars. Each bar is packed with 10 g of protein with only 150-160 calories, 0 g trans fat, and 17-20 g of carbs. You can satisfy your sweet tooth without the excessive sugar and carbs typically found in similar treats. The high protein levels help curb the sugar spike and crash that lead to binging on junk food.

Gourmet Snack Bars come in 5 flavors: Lemon Meringue, Marshmallow Brownie Crisp, Chocolate Chip, Sweet & Salty Peanut, and Peanut Butter Mousse.

Best Shakes: Meal Shake

Pictures of three flavors of  WonderSlim Meal Shakes

WonderSlim's Meal Shakes are made with calcium caseinate, a slow-digesting dairy protein that promotes muscle growth and keeps hunger at bay. These meal replacement shakes have just 100 calories and contain a blend of essential vitamins and minerals. And all flavors are vegetarian and certified kosher.

In addition to the Mocha Cream, Orange Creamsicle, and Strawberry Cream shakes pictured above, you can also get Wonderslim Meal Shakes in Chocolate Cream, Vanilla Cream, Choco Mint Cream, Chocolate Salted Caramel, and Dark Cocoa Cream.


Starting From

Order Size and Price 

Shipping Fee

$1.94 per portion

BASIC 4-Week Plan: $217.00


$1.84 per portion

CORE 4-Week Plan: $257.00


$1.73 per portion

PREMIUM 4-Week Plan: $332.00


The prices listed above are for WonderSlim’s most popular plan, the 4-Week Plan. You can order 1-Week or 2-Week boxes, which will cost a bit more. Or you can order 6-Week, 8-Week, or 12-Week plans, which will cost more upfront but will save you money per portion.

You can also get 20% off if you subscribe to individual meals with WonderSlim’s Subscribe & Save. But WonderSlim welcomes one-time orders, so you can try it out with no commitment. And you can buy many WonderSlim products at retail and online outlets to see if its products suit your tastes.

Shipping is free on all orders over $79. All other orders ship at a flat rate of $8.49. Shipping to Alaska, Hawaii, and Puerto Rico is $29.99 for smaller orders and $69.99 (minus an $8.49 shipping discount) for larger boxes.

Shipping & Delivery

Wonderslim's free and flat-rate shipping is via UPS or DHL. Paid shipping to Hawaii, Alaska, and Puerto Rico via USPS is available, as is expedited shipping. You’ll receive tracking information as soon as the order ships.

All orders over $79 ship free to the continental US. When I placed a smaller order, shipping from WonderSlim’s North Carolina warehouse to my New Jersey address cost $8.49 for regular shipping (7-10 business days) and $12.99 for expedited shipping (3 business days).

How WonderSlim Works

WonderSlim’s Subscribe & Save plan provides regular deliveries of diet food to your door. You can choose between deliveries every 4, 6, 8, or 12 weeks. This is a much more flexible arrangement than most meal delivery services offer. And if you purchase the items on sale, WonderSlim will continue to honor that price throughout your subscription.

But if you’re looking for a more structured diet, you can sign up for 1 of WonderSlim’s Plans.

How to Sign Up

Here’s how you sign up for 1 of WonderSlim’s plans. You’ll save over 30% vs. the cost of buying individual items when you purchase a 4 week plan, and there’s no obligation involved.

1. Choose Your Plan

Screenshot of WonderSlim's Plan options

When you choose your plan, you can choose between a 1, 2, 4, 6, 8, or 12 week box. The bigger the box, the greater the savings – and vice versa.

2. Choose your items

A screen shot of WonderSlim's menu selection section

You choose the items that you want from the menu. While WonderSlim lets you filter by diet when buying individual items, you’ll have to sort the different meals for yourself while filling the cart.

3. Push the Checkout button

Screenshot of WonderSlim's checkout page

When you’ve filled your cart, you enter any promo codes. If you’re paying by PayPal, you can go straight to PayPal Checkout, and PayPal will input your shipping information for you.

4. Enter your shipping address

Screenshot of WonderSlim's Shipping Info page

When you enter your order, you have the option to choose standard ground shipping or expedited 3-day shipping. If you’re outside the continental US, your only option is USPS shipping.

5. Enter payment info and review order

Screenshot of WonderSlim's payment information page

Diet Direct, WonderSlim’s parent company, accepts Visa, Mastercard, American Express, Discover, and PayPal. After you review your order, you confirm your payment, and your WonderSlim order begins processing.

Managing Your Subscription

WonderSlim sends you a reminder email 5 days before your order is processed. You have 4 days after receiving that email to change your order, delivery date, payment method and shipping address. You can also skip or cancel items.

The Manage Subscriptions tab on your WonderSlim account lets you make Subscribe & Save changes. Log into your account, then go to My Account/Manage Subscriptions.

Customer Service

WonderSlim customer care is available by phone or through the webform. You can call (800) 567-3438 Monday through Friday from 9 am to 6 pm Eastern Time.

You can return 1 opened box, bottle, or container of any product, and any unopened WonderSlim product, within 30 days of purchase. Simply contact customer care for an RMA number, and WonderSlim will give a full refund or exchange for any product of equal price with no questions asked.

How WonderSlim Compares to Other Meal Delivery Services

The Bottom Line: Is WonderSlim Worth It?

WonderSlim is a reasonably priced, restricted-calorie diet plan. Its meal replacement products get high marks from reviewers, and if you stick to the WonderSlim plan, you’ll almost certainly lose weight. But it may not be the best choice for those who are trying to make lasting changes in their eating habits. A service such as BistroMD is known for its great weight loss results.

WonderSlim is a very good choice for dieters who keep kosher. Very few diet meal delivery services offer certified kosher options. There are only a few kosher meal delivery services. Most WonderSlim meals are kosher, so you can lose weight without worrying about the ingredients.

As somebody who has struggled with my weight, I’ve found that losing those pounds can be easier than keeping them off. That’s why I recommend that those who are serious about dieting combine their calorie-cutting with exercise and a commitment to eating better over the long term. Our list of the best weight loss meal delivery services features companies that’ll help you get into the habit of healthy eating.


Does WonderSlim work?

WonderSlim is a restricted-calorie diet that’ll result in weight loss if followed. Many WonderSlim customers have reported weight loss when they stuck to the plan, with some reporting losses of 100 pounds or more.

Is WonderSlim gluten-free?

Many WonderSlim products contain no added gluten and are suitable for those with mild to moderate gluten sensitivity. But WonderSlim’s meals aren’t certified gluten-free and may not be suitable for those with celiac disease or serious gluten sensitivity.

Is WonderSlim vegetarian?

Many, but not all WonderSlim products are vegetarian. You can click the Vegetarian icon in the Diet Types section. These vegetarian offerings may contain animal products, so vegan dieters may want to check out our list of the best vegan meal delivery services.

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We rank vendors based on rigorous testing and research, but also take into account your feedback and our commercial agreements with providers. This page contains affiliate links.Advertising DisclosureThis is a user-oriented comparison website, and we need to cover hosting and content costs, as well as make a profit. The costs are covered from referral fees from the vendors we feature. Affiliate link compensation does not affect reviews but might affect listicle pages. On these pages, vendors are ranked based on the reviewer’s examination of the service but also taking into account feedback from users and our commercial agreements with service providers. This website tries to cover important meal, coffee and pet food delivery services but we can’t cover all of the solutions that are out there. Information is believed to be accurate as of the date of each article.
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