Product & Plan FAQs

General Information

What is Medifast?
Medifast is a portion-controlled, nutritionally balanced, low-fat, and clinically proven program that helps people lose weight faster and more effectively than traditional diet plans. Medifast Meals come in individual packets that you mix with water and microwave or refrigerate, and are available in a wide variety of foods and flavors, including shakes, soups, stew, chili, oatmeal, scrambled eggs, fruit drinks, iced teas, hot beverages, bars, puddings, pretzel sticks, and cheese puffs. Quick and easy to prepare, they offer a healthy fast food alternative to a busy lifestyle!
How does Medifast work?
The clinically proven results of Medifast are based on the use of a structured meal plan featuring Medifast Meals, which are nutritionally designed with a proven combination of protein and carbohydrates, allowing you to successfully lose weight while minimizing loss of muscle. The Medifast Achieve Plan, our standard plan for weight loss, is medically designed to create a calorie deficit, allowing your body to burn fat for energy.
Why is the Medifast weight-loss program special?
Medifast is an effective, healthy weight-loss program, especially when compared to other diets you've likely experienced without success. Think of Medifast as a lifestyle change, not just a short-term diet or weight-loss solution. Medifast is a portion- controlled, low-calorie weight-loss program that leads to faster weight loss than traditional diets. Medifast is special because you can achieve the quick weight loss you want. Results vary. Medifast also offers specially tailored programs to meet the needs of nursing moms, seniors, teens, and people with diabetes or gout.
What is the Medifast Achieve Weight Loss Plan?
The Medifast Achieve Weight Loss Plan consists of 4 portion-controlled, nutritionally balanced Medifast Meals, 2 lean & green meals, plus 1 healthy snack each day.
What is a Medifast Meal?
Almost all Medifast products are "meals" since they contain protein, vitamins, minerals, fiber, and other nutrients. There are only a few exceptions: Flavor Infusers?, Medifast Soy Crisps, and Medifast Crackers (Soy Crisps and Crackers are optional snacks). All other Medifast offerings, including shakes, soups, stew, chili, oatmeal, scrambled eggs, fruit drinks, iced teas, hot beverages, bars, puddings, pretzel sticks, and cheese puffs, are Medifast Meals.
What is a Lean & Green Meal?

The LEAN portion of a lean & green meal includes 5-7 ounces (cooked weight) of lean protein or meatless protein (serving size varies depending on your protein choice) and 0-2 servings of healthy fat ( serving size varies depends on your protein choice). For a complete list of lean options and portion sizes, please refer to our Lean Options List (PDF) and our Meatless and Vegetarian Options List (PDF).

The GREEN portion of a lean & green meal includes 3 servings of low- carbohydrates/non-starchy vegetables from our Green Options List (PDF) ) Each serving of vegetables will be either 1/2 cup or 1 cup depending on the vegetable(s) you choose; choose any 3 vegetable servings to make up the full Green portion of your Lean & Green meal. For a complete list of approved vegetable choices and their respective serving sizes, please refer to our Green Options List (PDF).

Why are there certain "approved" vegetables for the Lean & Green Meal?

All vegetables promote healthful eating; however, during the weight-loss phase of your plan, we do suggest that you avoid "higher carbohydrates" vegetables in order to enhance your weight-loss results. Once you transition to the maintenance phase of the program, we encourage you to include ALL vegetables for long-term health.

Our Green Options List (PDF) will help you identify the relative carbohydrates levels of these approved vegetables. *NOTE: Carrots, corn, potatoes, peas, onions, edamame, and Brussels sprouts are not recommended during the weight-loss phase of your Medifast Achieve Weight Loss Plan, but you can include them in your diet again once you transition to the maintenance phase.

Can I use Medifast Meals interchangeably?

One of the great benefits of Medifast Meals is that they may be used interchangeably, so you can choose any four Medifast Meals you want - whatever you crave - each day.

The only Medifast Meals that you should limit to fewer than four per day are:

  • Maintenance Bars (green wrapper) - one per day
  • Essential1: Calorie Burn Meals - up to three a day.

What kind of snacks can I have on this program?

In addition to your four Medifast Meals and two lean & green meals, you may choose a healthy Medifast snack, including:

  • Medifast Snacks - one packet
  • 3 celery stalks
  • 1 fruit-flavored sugar-free Popsicle®
  • 1/2 cup sugar-free gelatin dessert, such as Jello®
  • Up to 3 pieces of sugar-free gum or mints
  • 2 dill pickle spears
  • 1/2 oz of nuts: almonds (10 whole), walnuts (7 halves), or pistachios (20 kernels)*

Eating more than one snack per day may hinder your weight-loss efforts. For tips to help you with slower weight loss, please refer to our Plateau Tips (PDF file).

*Be mindful that nuts are a rich source of healthy fat and additional calories-choose this optional snack sparingly.

Can I substitute a sixth Medifast Meal for my one Lean & Green?
Medifast Meals plus two lean & green meals, and one healthy snack) should be followed as written, unless otherwise recommended by your physician.

Your lean & green meals contributes needed calories and dietary fiber, vital vitamins and minerals, protein to help protect lean muscle mass, and a small amount of dietary fat which is essential for absorbing fat-soluble vitamins and keeping the gallbladder at optimal health. It also provides you with learning opportunities to better understand how to select and prepare healthy meals while still enjoying the convenience of the structured Medifast Achieve Plan.

Is the Lean serving size the cooked or uncooked weight?
It is the cooked weight (to ensure proper portion sizes, weigh your items after cooking them).
How many calories are in the Medifast Achieve Plan?
The Medifast Achieve Plan provides approximately 1,000 - 1,300 calories per day, depending on your personal selections.
Can I substitute frozen meals for my Lean & Green Meals?

Medifast does not recommend frozen dinners (e.g., TV dinners) on the Achieve Plan ? primarily due to their varying calorie levels, excessive sodium content, and lower protein and fiber levels than the Achieve Plan provides.

Has the use of Medifast been researched?

Yes! Since 1980, Medifast is the brand recommended by over 20,000 doctors. Results vary.

Is Medifast safe?

Medifast Plans and Products have been recommended by more than 20,000 doctors since 1980. Individual results vary.

Is Medifast covered by my medical/health insurance?

Weight-loss programs are generally not covered by medical insurance, but please check with both your doctor and your insurance carrier for information relative to your individual circumstances. Some policies may cover weight-loss programs in conjunction with specific medical conditions in which obesity is a factor (such as primary diagnosis of type 2 diabetes or heart disease) and weight loss can lead to management or improvement of these conditions. But again, you will need to ask your doctor and your insurance carrier this question in order to receive an accurate answer based on your coverage and medical status. Medifast does not bill insurance companies on behalf of its customers.

How does Medifast help sustain your weight-loss results?

Medifast won't abandon you the way fad diets have in the past. The Medifast Transition, Maintenance, and Exercise Plans pick up where the Medifast Achieve Plan ends, and teach you how to sustain your weight-loss results long term!

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Medifast, Inc., Health & Wellness, Owings Mills, MD HACKER SAFE certified sites prevent over 99.9% of hacker crime.Medifast makes no claim that these results are representative of all participants on the Medifast Program. Medifast recommends you consult with a physician before starting a weight-loss program. Medifast is the brand recommended by more than 20,000 doctors since 1980.

Davis, L.M., Coleman, C.D., Kiel, J., Rampolla, J., Hutchisen, T., Ford, L., Andersen, W.S., Hanlon-Mitola, A. (2010). Efficacy of a meal replacement diet compared to a food-based diet after a period of weight loss and weight maintenance: a randomized controlled trial. Nutrition Journal, 9(11). View Study