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SlimFast Review - Does This Meal Replacement System Work?

By Summer Banks on Nov 02, 2016
SlimFast Review

Why are people talking about Slim Fast? Our attention turned toward ingredients, side effects, clinical research, peer-reviewed studies and customer service quality. Additionally, we dissected hundreds of dieter reviews and comments to see if anyone was successful in reducing caloric intake and weight. Then, we condensed and summarized to give you the information you need.

EDITOR'S TIP:

What is Slim Fast?

First off, Slim Fast is a meal-replacement system offering ready-to-drink shakes, 100-calorie snacks and nutrition bars. The ingredients include amorphophallus konjac [1], rhizome, apple pectin, oat fiber, fat free milk, water, sugar, gum arabic, canola oil, milk protein concentrate, cellulose gel, coffee powder, mono and diglycerides, potassium phosphate, hydrogenated soybean oil, natural and artificial flavors, maltodextrin, dl-alpha-tocopheryl acetate, phytonadione, thiamine mononitrate [2], riboflavin, niacinamide, pyridoxine hydrochloride, and folic acid. You’ll replace one meal and incorporate a snack as needed, ideally to curb appetite and keep blood glucose level between meals.

Slim Fast was introduced in 1977. The official website and local grocery stores sell the product line. The longevity of the company and the affordability are positives, but read on…

Poor Taste – “Is it Flavorful?”

The first concern about Slim Fast ingredients was taste. “Meal-replacement shakes [3], nutrition bars and snacks are intended to substitute regular foods,” said our Research Editor. “If the dieter doesn’t like the flavor, that is more than enough to keep them from sticking with the plan. If you don’t maintain a reduced-calorie diet, you are less likely to shed weight.”

“I purchased Cappuccino Delight. Delightful it’s NOT. The taste reminds me of burnt coffee beans,” said one customer.

“Too much sugar [4], way too sweet and chocolaty. Does not feel like a meal,” said another user.

On the other hand, we found Slim Fast reviews that didn’t mention poor taste.

“Fills me up and tastes good,” reported a dieter.

Slim Fast Side Effects – “Digestive Issues?”

As we read through more and more reviews, Slim Fast side effects were a concern. “It gave me gas and diarrhea. [5] Never tried it again,” said a customer.

“The first gave me stomach pain. Within an hour the diarrhea [6] began again,” said another.

While Slim Fast side effects were a concern for some, others didn’t mention adverse reactions.

“No gastrointestinal issues to speak of,” reported a customer.

“There’s no effects on my digestive system [7],” stated another.

Our research has shown that side effects can hamper the ability of a supplement to produce long-term results. If Slimfast causes slight digestive discomfort, a user is unlikely to stick with it.

The Science- “Any Research Behind the Shake?”

Slim Fast does mention some studies relating to its effect on weight-loss. There’s even science-based evidence supporting replacing meals and dieters losing weight. Unfortunately, when we searched PubMed and various medical journals, we were unable to find any peer-reviewed studies to prove it works. It does contain protein and human studies have shown it to “[induce] sustained reductions in appetite.” [8] We’d like to see a little more soluble fiber, as that ingredient can slow the digestive process.[9] At DietSpotlight, we look for solid science. When there’s no clear link to clinical studies, we become concerned.

The Bottom Line – Does Slim Fast Work?

So, are you heading out to buy a case of Slim Fast? Well, we like the longevity of the company and that it seems affordable, but we’re hesitant about this one because the research doesn’t directly link it to weight-loss, there are no dedicated peer-reviewed studies and elements in the formula that could disrupt / slow the digestive process, like fiber, to reduce hunger and slow the onset of appetite are missing. We’re also concerned about the fact that beverages are not as effective as solid foods in terms of satiety. [10]

Do you want to trim down a bit? If so, we suggest going with a supplement with no mention of harmful side effects and a formula containing some clinically-tested ingredients shown to help promote weight-loss.

Among the best products we’ve seen in 2016 is one called Leptigen. It features a four clinically-tested ingredients which have been shown to help accelerate metabolism and ignite fat loss. No one’s talking about harmful side effects, but dieters are exited about their great results.

Also, the makers of Leptigen are so confident in their supplement, they’re offering a Special Trial Offer.

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About the Author:

Summer Banks is an ISSA-Certified Fitness Nutrition Specialist and has reviewed over 2000 diet products. She has years of nursing training, experience as a manager responsible for 15 supplement brands, and completed coursework on Food and Nutrition from Stanford University. full bio.

How Does SlimFast Compare?

Previous SlimFast Review (Updated November 5, 2014):

What You Should Know About Slim Fast

Slim-Fast is a well established company that has been around for many years. It produces a wide variety of products that range anywhere from shakes to candy bars. Claims have been made that these products can help you to lose weight by reducing your calorie intake, but providing you with the proper nutrition and vitamins that your body needs. It is said that Slim Fast is easy to follow and it won't make you hungry. We will now take a closer look so it may be determined if these claims hold any relevance.

Ingredients

The contents of Slim Fast Ingredients, in most of their products, are Fat free milk, water, sugar, cocoa (processed with alkali), gum Arabic, calcium caseinate, cellulose gel, canola oil, potassium phosphate, cellulose gum, soybean lecithin, mono and dyglicerides, artificial flavor, carrageenan, maltodextrin and dextrose.

Slim Fast Product Features

Slim Fast does not appear to contain any special ingredients that really stick out as a "weight loss supplement". Basically, it is believed that the main purpose of the product is to make sure that your body is receiving the proper amount of nutrition by really making an attempt to include all of the daily dietary needs by combining the product with what Slim Fast likes to call "sensible meals". Similar to these sensible meals, Shakeology is a line of meal-replacement shakes high in protein discovered to reduce cravings. Although these proteins shakes are found to support a high supply of protein, the side effects still cause a concern for negative reactions. According to a source, you may be able to achieve these results by either using Slim Fast's products as a meal replacement, or by combining them with other foods that you may already have in your pantry or refrigerator. They recommend that you eat two meals a day that includes one of their products for each one, and one sensible meal at night with snacking in between. As it pertains to appetite suppressants, a good source for weight loss can be found in caffeine, one in particular product that resembles same results is Hydroxycut. Needless to say, this thermogenic can be taken once or twice a day, like Slim Fast. Caffeine is found to coincide with with healthy weight loss by suppressing the appetite and increasing energy levels. Of course, their snacks would also be Slim Fast products. It appears that Slim Fast's main goal may be to encourage you to eat less of regular everyday foods and replace them with Slim fast products. This stimulant will result in less food and less calories, but it may be delivering the proper amount of nutrition to your body while doing so. You can find identical results in PhenQ affirming the supplement elevates energy levels with it's secret ingredient, caffeine.

See Our Featured

Advantages of Slim Fast

  • One advantage of this is that it appears that you still get to eat regular foods with the available meal plan system.
  • Slim Fast products can be found nearly anywhere from shopping centers to drug stores.
  • Slim Fast provides online support and helps to plan your menus

Disadvantages of Slim Fast

  • Most nutritionist may believe that this is not a long term solution to weight loss.
  • Nutritionist may also believe that the caloric intake is not enough.
  • It seems to contain too much sugar, probably resulting in an energy boost then a crash.
  • This does not appear to contain an effective metabolism booster.

Conclusion

Slim Fast appears as though it could be an effective weight loss regimen. However, there may be some concerns about the amount of sugar that is included in these products. These days manufacturers tend to put less sugar in products due to the crash and burn effects that it can have, especially when following a diet with such low caloric intake. Also, it may not be realistic to believe that this is a lifelong solution to weight loss due to the fact that someone simply may want to go their entire lives having to buy Slim Fast products in order to maintain their weight.

SlimFast Questions & Answers:

We read hundreds of customer reviews about Slim Fast and put them into this helpful FAQ.

What are the side effects of Slim Fast?

According to some customer reviews, Slim Fast side effects may include digestive discomfort, diarrhea, and stomach pain.

What are the ingredients in Slim Fast?

Slim Fast ingredients include fat free milk, water, sugar, cocoa (processed with alkali), gum Arabic, calcium caseinate, cellulose gel, canola oil, potassium phosphate, cellulose gum, soybean lecithin, mono and diglycerides, artificial flavor, carrageenan, maltodextrin, and dextrose.

Does Slim Fast work?

Slim Fast is clinically proven to aid in weight-loss with regular use as part of a healthy eating program.

How much does Slim Fast cost?

Slim Fast cost depends on the retailer, but for an 8-pack at Walmart, it costs about $9.98.

How should I take Slim Fast?

Slim Fast is a meal replacement shake, and it can be taken twice a day.

Can I take Slim Fast if I have a health condition?

As with any meal replacement or weight-loss supplement, you should consult your doctor before using Slim Fast, especially if you are pregnant, under 18 years of age, nursing, or suffering from any health condition.

What do users like about Slim Fast?

Slim Fast customers enjoy the weight-loss results with regular use.

What do users NOT like about Slim Fast?

Some customers of Slim Fast do not like the bad taste and it caused indigestion, according to reviews.

How do I contact the Slim Fast customer service department?

You can call Slim Fast at 1-800-754-6327. They also have various social media platforms you can contact them through.

What flavors does Slim Fast come in?

Slim Fast meal replacement shakes are offered in Creamy Chocolate, Strawberries and Cream, Vanilla Cream, and Caramel Latte.

Does Slim Fast offer other products?

Slim Fast as a brand does offer other products, including snacks, smoothies, and bars.

Does Slim Fast come with a guarantee?

Slim Fast may come with a guarantee, depending on the policies of the retailer it is sold at.

Do you know of any special deals or discounts on Slim Fast?

No special deals or discounts are available for Slim Fast. If you are looking for a great deal on a great weight-loss supplement, you may want to give Leptigen’s Special Trial Offer a try. Customers love the results and the ingredients, something that is important to us. Click here to check it out.

37 User Reviews About SlimFast

Leave comments below (moderated by Leptigen)
  • 1
    Allison

    I absolutely love Slim Fast! I have tried several things to loose weight and nothing has worked for me. I started slim fast 5 weeks ago and have lost 11 pounds and several inches. It taste great to me. I have a morning shake, morning snack, lunch shake, afternoon snack and eat a regular dinner. I drink 5 bottles of water a day and do not work out. It has been the best thing for me.

    [Reply]

  • 2
    Harpers B

    I started using the product 2 weeks ago and so far I’m pleased with the taste and product price, I mixed it up with skim milk and slowly enjoyed my shake I also add some good protein to go along with my shake like a boiled egg, fresh fruit or 1/2 cup sugar free jello and so far I’m satisfied nutritionally. I’m glad it has helped me to cut down and out the late night fast food and walk and swim at my local gym, thanks slimfast I appreciate what the shake offers.

    [Reply]

    Glenn (Editor)

    Hi Harpers. Good job on making those changes. If you want to boost those results, you may want to consider adding Leptigen. Click above to read about the sample offer.

    [Reply]

  • 3
    Nancy Davis

    ..I have been using your slim fast shakes for 15 years,but with your new Slimfast Advanced (11.01ozs) I can”t get it shook up after HARD shaking I still have lumps of shake mix left over

    [Reply]

    Anna (Editor)

    Hi Nancy! For detailed product and usage instructions, please refer to the Slimfast official website for more information.

    [Reply]

  • 4
    Carol

    Why does it cause constipation?

    [Reply]

    Adrian (Editor)

    Hello Carol. All users are different and can experience different side effects, but please make sure to consult with your physician before taking this product.

    [Reply]

  • 5
    Your Name

    Slimfast makes me bloat. Equate brand doesnt

    [Reply]

  • 6
    Your NamePeter

    Just started with slimfast and it seems to be working, lost 3 lbs in 2 weeks , but it may have had cause of irregularity, do not know if any one else has had the same problemTell us your thoughts about SlimFast.

    [Reply]

    christine

    Tried slim fast in the part. What l found is losingtje natial way.you can easily. Weight more weight by eating less. Excefcisingmore. For now my excerise is mainly walking for an hour. Not leisure. Walk more like brisk. Walking. I lost 3 pounds in a week.. so can too without slimfast diet.

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  • 7
    John Rupp

    I have no problem with the Slim Fast diet program. I have lost almost 25 lbs. I plan on staying with it for another 5 lbs.I been losing 8-10 lbs per month. Plus have not had any health issues.

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    Alyssa

    How does it work? Do you drunk all day long? I plan on trying it since I just had another baby almost 9 months ago and I wanna get my old body back soon real soon cab you please help I would be greatly appreciative and thankful

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    Alyssa

    I meant drink lol ??

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  • 8
    reema

    It is about 5 days now I started taking slim fast shake.i have severe gastric problem. But I am not sure it is because of this product.i wanted to know if I consume for long term, is there any health issues with this product. Thanks

    [Reply]

    Glenn (Editor)

    Hi Reema. Considering you mentioned you experience severe gastric problems, you may want to reach out to a healthcare professional. However, the one we’re keeping our eye on is Leptigen. It contains ingredients backed by science and customers aren’t talking about harmful side effects. Click above to read about the sample offer.

    [Reply]

  • 9
    Connie Belt

    My thoughts are, that i can never find French Vanilla on the shelves at Walmart in Paducah, Ky. I love this product and it is very frustrating not to be able to find it!! I even went on line to purchase it and they were sold out! But last week they had it, but was only going to let me buy 2, when I was wanting 10 cans. I like the powder so I can mix it myself. Thank you for listening. Connie Belt

    [Reply]

    Your Name

    ITell us your thoughts about SlimFast I’m very overweight ,want lose 70 lb so going give it ago I love the coffee latte which sells out fast in UK. Read all comments which find helpful thankyou and good luck to all xx

    [Reply]

  • 10
    maby

    slim fast contain to much sugar I start to take tons of water after using this product for one month .I will quit it inmmediately.

    [Reply]

  • 11
    mary

    nursing infants….good or bad?

    [Reply]

  • 12
    John Frohock

    I have been a long time user of slim-fast shakes. Today I am quitting. The reason is inconvenience of the new plastic bottles. I use to have my shake on the run. Pop the top and drink it on the drive to work. Now I have to remove the cap, remove the aluminum foil and figure out a place to put them while I drink my shake. The top of the bottle feels funny when drinking from it, and the bottle is to small; falls over in the cars’ cup holder. Looks like the price went up when you shifted to plastic as well. I’m dissapointed.

    [Reply]

  • 13
    Judith Rubiel-Perez

    I went to the pharmacy to pick up meds and slimfast and was shocked at what I saw. Now your company is cheating us out of your product. I use to get a 12 pack now its an 8 pack. It use to be 11 ounces, now its 10 ounce. The 6 packs are now 4 packs for the same price. What the heck is going on? I feel your company is starting to screw the consumer. Does your company think that us consumers are stupid, do you think just because you put your product into a plastic bottles that we well be happy? Not me.. If your going to give us the same amount in your plastic bottles then fine and dandy, but don’t take away the volume. I think you need to talk to your marketing dept or your CEO and tell them that the public is not happy. The sales person said she had several complaints since your product hit the shelves. Its bad enough our gas and cost of living is going up, and now the one thing I felt I could afford to help me with my weight problem has gone up. I think you need to do some changes before people start to boycott your product…A concerned consumer.

    [Reply]

    david

    I agree with your comment. I will go to another brand. It is the price. slimfast take note, the price would usually be around $1.00 a can. the price per can has now gone up 40%. I don’t need that headache.

    [Reply]

  • 14
    Anon

    At 7 or 8 dollars for a 6 pack, it’s really expensive. I found some shakes at Aldi that taste just like them, same vitamins, less calories, and it’s 2.99 for a six pack on sale. Regular price is 4.29.

    [Reply]

    Mae

    What’s the name brand and do they offer a powder you can mix because I am lactose intolerent?

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    cass

    whats the name of this cheaper drink?

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    Jennifer

    I was wondering if Aldi had something like it. I just started the Slimfast diet and really like it, but was wondering if there was a cheaper version. Thank you for letting us know. I will get Aldi’s from now on. It’s my favorite place to grocery shop anyway!

    [Reply]

  • 15
    Fion

    I do love this program, it’s worked for me, and I continue exercise 3 times a week,also control myself do not eat after 6 pm. avoid from sweet. it’s good product.

    [Reply]

  • 16
    Clara

    How much sodiun is in a slim fast drink

    [Reply]

  • 17
    lynn

    Slimfast worked for me. i lost 3 lbs in the first week on the 3-2-1 plan & still losing about 2 lbs a week.

    [Reply]

    Shelly

    Hey , you said you lost 3 lbs the first week. I was wondering how much exercising your doing with the diet to get those results, and what exercises are you doing? I wanted to try the SlimFast 3-2-1 Plan, but I wasn’t completely sure if it worked. Thanks.

    [Reply]

  • 18
    melayja

    what happened when your menstrual cycle won’t for a month with slimfast

    [Reply]

  • 19
    Betty Hamilton

    When will Slim Fast be back in Southfield Mi Or Liviona MI

    [Reply]

  • 20
    Kelly Southard

    Yes, I would throw them away. All Slim Fast shakes in a can from 2009 have been recalled. The powder and slim fast bars are ok. It’s just the cans.

    [Reply]

  • 21
    Darlene Briggs

    i have 3 six-packs of Slim Fast Diet Drink that I purchased in 2009. My brother said That I should throw this away as it had been recalled. Is this correct? Please advise.
    Thanks

    [Reply]

    Lawrence Smith

    Hello: I read your article on the ingredients in slimfast. For five years I have been using slimfast once a day in the morning. I usually mix a quart bottle in the night and it last about two days. During this five year period I had colitis of the stomach. Only recently did I hear that these problems can be caused by diet. I decided to eliminate foods form my diet to see what could be causing the colitis. I got down to milk and slimfast. When I stopped drinking milk with slimfast my symptoms finally went away. I thought at first it was the lactose, so I went for several days without any milk or slimfast, the symptoms are gone. They I started to see if I could drink milk with no lactose. For several days the symptoms have still been gone and I dont have to take the medicine which cost me $100 a month any longer. I believe the slimfast has been causing me colitis all these years. I am still off the medicine and slimfast and wont use the product any more. I would like to tell other people who may have colitis about this problem. Can you suggest places I can contact? Thanks very much Lawrence Smith

    [Reply]

    Htay RN

    Lawrence, colitis of the stomach?? Colitis refers to the colon and has no referal to the stomach. Slimfast is not intended to be used “for five years” And a quart lasted you two days? That’s two servings you were drinking for one breakfast. With this is mind, I question your ability to mix the proper concentration. Don’t slam the product if you are not follwing direction of proper use.

    [Reply]

    Glenn (Editor)

    Hi Darlene. Considering the date on the bottles is 2009, they may be out of date. As a replacement, there’s one that we’ve been hearing buzz about and it’s Leptigen. It contains clinically-tested ingredients and customers are sharing positive results. Click above to read about the sample offer.

    [Reply]

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