How Does SlimFast Work?

It's easy as 1-2-3


One Sensible Meal

Enjoy all your favorite foods with the SlimFast Plan. No food is "forbidden," which means you have the freedom to indulge in sensible portions of anything you choose, including dishes like bacon asparagus pasta, steak tacos or margherita pizza.


Replace Two Meals A Day

Choose from a wide variety of SlimFast products including shakes, smoothies and bars from the Original, Advanced Nutrition, Advanced Energy, Keto and Low Carb families. SlimFast has many options to suit different needs - including your own!

SlimFast Products
SlimFast Snacks

Indulge in Three Snacks

In between meals, satisfy cravings with SlimFast snacks or any low-calorie snack of your choice. SlimFast snacks offer many delectable options, ranging from sweet treats to savory snacks, there's something for every mood. They are portable and ready-to-eat, at home or on the go. Eat 6x a day with the SlimFast Plan and feel satisfied all day long.

Find delicious, easy and plan-approved recipes here or within the SlimFast Together app!




The SlimFast Plan can help you lose weight fast. You can see results in just one week!



SlimFast products have something to suit every craving, from Peanut Butter Cups to refreshing Strawberries & Cream shakes.



The SlimFast Plan is as easy as 1-2-3 and the products are convenient to enjoy at home or on the go.


Lose weight your way (and keep it off*) with the flexible SlimFast Favorite Foods Plan. No food is "forbidden," which means you have the freedom to indulge in all your favorite foods, like pasta, cheeseburgers and pizza. The Plan is compatible with any approach you choose whether it be low-carb, high-protein, vegetarian, or any other preference. You can customize your routine to suit your needs and fit your life.


The Keto diet kick starts your metabolism; Powered by the SlimFast Plan, SlimFast Keto makes managing your macros as easy as 1-2-3. This complete line of convenient, ketogenic staples includes ready-to-drink shakes, shake mixes and crave-worthy Fat Bomb meal bars and snacks. Designed to complement your busy life, each contains minimal carbs and plenty of high-quality fats. This is Keto made easy.

SlimFast Keto

Lose weight fast (and keep it off*) while continuing to enjoy delicious and satisfying foods with the SlimFast Low Carb Plan. From protein and healthy fats to whole grains and vegetables, mix and match your SlimFast products and food you love while limiting your carb intake. You’ll never go hungry because you’re eating 6x a day. Finally, a Low-Carb Plan that’s highly satisfying.

SlimFast Original

SlimFast Original has a taste you'll love with rich and creamy ready-to-drink shakes and customizable shake mixes. This Plan combines the simplicity of the SlimFast Plan and the Original line's 40+ years of proven weight loss success.

Drink Up and Stay Active!

Water and light activity are essential to weight loss success! Fill up a large water bottle and carry it around with you so it is always readily available. Get moving for about 30 minutes per day. Add some light activity, like a daily walk into your routine. Remember to always check in with a physician before starting any new exercise routine.


Does SlimFast Work for Men?

The SlimFast Plan is for both women and men, however men need to make a slight modification to ensure you are consuming enough calories. Add 200 calories to each SlimFast meal replacement daily. Enjoy a delicious mini meal or a double portion of SlimFast to keep you full throughout the day.

Keep the Weight Off with SlimFast

Once you've reached your weight loss goal, keep the weight off with the SlimFast Maintenance Plan. Replace one meal a day with a SlimFast shake, bar or smoothie, eat two sensible meals of your choice and continue to snack in between meals. Continue to stay active and hydrated too!

Hazely Keeping It Off

Meet Maryann Walsh, Registered Dietitian and SlimFast Plan Consultant!

A consultant of the SlimFast Plan, Maryann is a Registered Dietitian and Certified Diabetes Educator with Bachelor of Science degrees in Biological Sciences and Dietetics and a Master of Food and Nutrition. She has extensive experience working with clients of all ages and from all walks of life, helping them to achieve their wellness and weight loss goals. She believes in flexible, gradual lifestyle changes to achieve long-term health and happiness.

Lose weight and keep it off