3.6/5 (707 reviews)
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Overall Rating3.6 out of 5
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About Medifast

Medifast is ideal for dieters who haven’t gotten results from a traditional healthy meal plan or are considering surgery to achieve weight loss. Medifast is a simple weight loss program that features five meal replacement items and one meal per day. It includes options for support through support groups and health coaches.

Pros & Cons


  • Weight loss tracker
  • One-on-one counseling with coaches
  • Free online meal planner
  • Options for vegetarians, diabetics


  • Not available in grocery stores
  • Expensive products

Bottom Line

Medifast helps dieters lose weight at a steady pace. Products aren’t sold in grocery stores, but you can get free shipping. Medifast provides a free meal planner, access to a support coach and an online weight tracker.

Top Medifast Reviews


… If you follow it exactly and make a pact with yourself to be different expect to lose 2 LBS a week. After you hit your weight loss goals and feel like a new person, remember as ...

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I could have never imagined that this could have changed the way I eat and want to eat so drastically and in such short period of time. Even with the changes that my doctor insist...

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What is Medifast?

The Medifast program has three weight loss plans with three phases each and more than 70 meal replacements to choose from. In addition to eating five meal replacement items each day, users have a meal of lean meat and nonstarchy vegetables each day.

Dieters who choose Medifast as their weight loss program enjoy access to weight loss counseling and support, weight loss maintenance programming and perks like digital food trackers and free or cheap shipping.

Medifast cost

Medifast has three weight loss programs designed to keep you satisfied while helping you achieve weight loss over the course of several weeks. Each program has options to help you hit particular health goals.

  • Medifast Go ($451/month): The Medifast Go program features a 30-day kit with meals that help burn fat and aid in weight loss. These include 154 Medifast meals with a wide variety of on-the-go and low-prep options, a startup guide, a 30-day food journal, a Medifast blender bottle and a Medifast dining out guide. Among the foods in this plan are soup, pudding, pretzel sticks, shakes, oatmeal, bars, mashed potatoes and marinara sauce.
  • Medifast Achieve ($478.30/month): Medifast Achieve includes 126 meals, 21 bags of crunchy snacks and a 30-day supply of Heart Health and Digestive Health supplements. Bonus items include 13 “lean and green” meal options, a Medifast blender bottle, a Medifast dining out guide, popcorn, crisps and strawberry lemonade flavor infusers. Some items are only included in the first Medifast Achieve meal plan.
  • Medifast Thrive ($325.90/month): Designed for healthy weight maintenance, Medifast Thrive plans include two “lean and green” meal options, smoothie packets, shakes, yogurt bars and chocolate bars. Items in the Thrive kit are portable and convenient and offer various health benefits, such as necessary protein and fiber. After you complete your weight loss goals, using Thrive is a great way to maintain results.

How does Medifast work?

Medifast provides five prepackaged meal replacements to help consumers lose weight. Medifast meals are low-calorie and low-fat and designed to make you feel satisfied. Medifast bars, for example, contain 24 vitamins and minerals, 11 grams of protein, 4 grams of fiber and 13 grams of carbohydrates.

The Medifast food list includes items like shakes, bars, oatmeal, pudding, soups, salads and scrambled eggs, plus “lean and green” meals that feature healthy proteins and three servings of vegetables. Greasy, fried or sugary foods are not permitted on the Medifast program.

Medifast is clinically proven. A Nutrition Journal study showed that dieters who adhered to the Medifast program achieved meaningful weight loss, and the study concluded that customers' “mean body weight decreased steadily and significantly.”

Medifast FAQ

How much does Medifast cost?

Medifast costs between $325 and $480 per person for a four-week supply.

Is Medifast safe?

Medifast is usually safe. Plans feature replacement shakes, soups, bars and simple meals that provide between 800 and 1,000 calories daily. People with special nutrition requirements or who are breastfeeding or have certain health conditions can still benefit from a Medifast program. Those considering Medifast should consult with their doctor before beginning a plan, and some should complete the program under the supervision of their doctor.

How much weight can I lose on Medifast?

Medifast is designed to help people lose between 1 and 5 pounds per week. How much weight you lose on Medifast largely depends on how committed you are to the program.

What is Medifast food made of?

Ingredients in Medifast food include soy protein isolate, cocoa, whey protein concentrate, modified corn starch, soy lecithin, salt and corn syrup solids plus natural and artificial flavors. Medifast meals include shakes, soups and bars.

Can you buy Medifast in stores?

No, you can’t buy Medifast in stores. Medifast is currently only available through the company's website. Some people try to resell Medifast products on classified advertisement websites like Craigslist. It’s smart to purchase products only through the Medifast website to ensure you’re receiving the correct product and program information.

Does Medifast cause cancer?

No, there are no studies or scientific literature that indicate Medifast directly causes cancer.

What snacks can I have on Medifast?

Medifast snack options vary by plan, but permitted snacks include brownies, shakes, oatmeal, pudding, celery stalks, a half-ounce of nuts, a sugar-free popsicle or sugar-free gum. Some plans allow vegetables and lean proteins for snacking as well.

Is Medifast safe for people with diabetes?

Yes, Medifast is safe for people with Type 1 and Type 2 diabetes. Medifast meals have balanced nutrition and low glycemic index measures and emphasize portion-controlled eating at regular intervals throughout each day.

What can I drink on Medifast?

You can drink water and coffee on Medifast, but no alcohol. You can have regular coffee with one tablespoon of low-fat or fat-free creamer, half-and-half, skim milk or sugar-free flavorings. Additionally, the company offers low-calorie latte and cappuccino alternatives.

What is the difference between Medifast and Optavia?

Optavia is a subsidiary of Medifast. Medifast and Optavia products are similarly designed to help clients achieve their optimal weight loss goals. Optavia permits some food items that Medifast doesn't, like macaroni and cheese, and is priced higher than Medifast's monthly programs.

How much exercise does the Medifast diet require?

Medifast recommends completing around 30 minutes of moderate exercise each day while you're on a Medifast plan. It's also important to maintain proper fluid intake, particularly on hot days. Medifast suggests listening to your body and only doing what it allows. It's OK to stop exercise and rest if you become lightheaded or faint.

Does Medifast work?

Consumers who follow the Medifast program can benefit from losing weight in a reasonable, effective manner. Most consumers who use Medifast do see results from completing a program, though results vary by program and person. Studies indicate some participants regained some of the weight they lost after reintroducing regular foods to their diets.

Medifast Reviews

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Page 1 Reviews 0 - 10
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Verified Reviewer
Original review: April 16, 2021

I joined Optavia, formerly known as Medifast, with the understanding there would be a full refund if you are not satisfied for any reason and return your items within 30 days. I wholeheartedly embraced the program, eating my fuelings as described, weighing my food and following guidelines for my one lean and green meal a day, upped my water intake, eliminated carbs, sugar, alcohol, etc! I gleefully lost 5 lbs the first week and then only 1 pound over the next 14 days! I felt I could have the same amount of success on my own diet eating real food, especially since I disliked the food, and cancelled one week early and thank God I did or I would not have received a refund at all. The refund the company grants is for the food you are returning yet if to try the program you have to eat their food, 5 fuelings a day, you will have consumed most of it so one should not expect much of a refund. Additionally you pay the postage back to return it as well! I felt misled by this claim made by the company plus did not lose the weight so am dissatisfied with the company and the program. :-(

18 people found this review helpful
Verified Reviewer Verified Buyer
Original review: March 5, 2021

I wish I could give them zero stars. One is being kind. The website is difficult to navigate, orders aren’t processed correctly and when you call to cancel, they can’t. They request cancellation and it will take up to 18 days with only a 50/50 chance. If mailed to you, you now must pay to ship back plus a restocking fee. Every employee will tell you something different and emails are replied with auto-generated responses. This has been a horrible experience, I haven’t received my refund or confirmation that it was cancelled or shipped. Save your money and count calories. This company is a nightmare to work with!! Total SCAM.

22 people found this review helpful

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    Verified Reviewer
    Original review: Jan. 21, 2021

    I am trying to lose 80 pounds, and I have looked at a number of weight loss programs, and this looks promising...? It is not easy doing this, but I really think I can do this one. Great Company!!!

    7 people found this review helpful
    Verified Reviewer
    Original review: Jan. 20, 2021

    It works and you're never hungry. Have used it twice and had great results both times. I would highly recommend. The coaches are great too...Food delivered right to your door. I trust Medifast and am so glad it's available to the public.

    3 people found this review helpful
    Verified Reviewer
    Original review: Oct. 1, 2020

    While Optavia and Medifast plans do actually help to lose weight, once you go off plan, the weight comes right back on just like any other diet plan. The WORST part about the plan is the company itself. They have the WORST customer service that I've ever seen in any company...ever. I've spent 2 completely separate, full hours on the phone with them about the same subject without ever getting a satisfactory resolution from their incompetent customer service agents who are answering from the Philippines.

    20 people found this review helpful
    Verified Reviewer
    Original review: June 22, 2020

    VISA, MC Gift unreloadable cards are not allowed, because credit card info is automatically SAVED without your consent. They told me it was Visa Gift card company, so I called and was advised it's not them. They verified the card amount for the purchase, you need to tell them not to save the card. I'm like what I did not ask them to, nor was there a box to confirm to save. Medifast refused to UN SAVE the card for the order to go through.

    19 people found this review helpful
    Verified Reviewer
    Original review: June 3, 2020

    Order Kit for the first time. Changed kit preferences and foods that would be ordered. Got an email confirmation. When the kit came it was the prepicked foods in the kit. Called Medifast on 5/21. Was on hold for over an hour and on the phone for almost two hours. First they wanted me to pay to return products. Then they were going to send me a shipping label and then I could reorder the products, but were going to give me the first time buyer discount. Finally they agreed to send me a shipping label and still allow me to call back and get the discount to reorder, but would have to wait 5-7 days on the shipping label and then for the products to be returned before I could place the new order. Never got shipping label. Calling again today 6/3. Been on hold currently for over 30 mins. Will NEVER use this company or recommend this company to anyone. Very dissatisfied.

    36 people found this review helpful
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    Verified Reviewer
    Original review: May 13, 2020

    I lost over 100 pounds with Medifast several years ago. It was perfect for me because I could grab one of these bars and I was set. I never felt like I wasn't getting nutrients, I didn't have crashes, and it just worked. I continued to order the bars, mostly for convenience and maintenance, but I have ordered my last box. I started to notice that, after they started coming in an Optavia box, they not only didn't taste as good, they caused tons of gas and I started to have crashes and feel like I was not getting the nutrition I needed.

    As time went on, I would get a little sick after eating them, maybe every other bar or so. Finally, I ate one this morning and, 2 hours later, here comes the food poisoning. I have always reacted to bad food more quickly than the average person, so yes, it was the Medifast bar. I don't know what Optavia did to the Medifast products, but I would say Medifast is done. It's a shame, too. Medifast has helped a lot of people, only to be ruined by what is likely corporate greed.

    50 people found this review helpful
    Verified Reviewer
    Original review: Jan. 7, 2020

    I get an email that my Optavia reorder will process in 7 days. I simply go into their site, log on and change the date for my next shipment if I don't want it at that time. I'm not sure why all of the reviews I've read complaining about getting orders they don't know about are happening. Maybe speak to your coach and tell them you aren't receiving those reminders?

    31 people found this review helpful
    Verified Reviewer
    Original review: Dec. 10, 2019

    So I’ve only been using the Medifast/Optavia program for two months. So good. I know how to eat and lose weight. This is just an easy way to do it after a long illness that was a cause of weight gain.

    22 people found this review helpful
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