Slimful Review

One of the reasons so many people fail to lose weight is because they can’t rein in their appetite. Second helpings, snacks between meals, desserts, and midnight meals all sabotage your hard work.

Slimful is presented as a way to help you conquer these cravings and make real progress in your weight loss goals.

According to advertisements, Slimful is a 90-calorie chew that keeps you feeling full with less food for longer periods of time. By eating a Slimful chew before meals and finishing it off with a glass of water, Slimful makers say you can “lose weight easier” because the idea is you will eat less.

Does it really help you eat less? Let’s find out what you should really expect from Slimful.

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The Slimful Formula

Slimful manufacturers don’t tell us the core formula used in Slimful chews, but they do provide a copy of the nutrition facts for each Slimful product. The formulas differ by flavor, but each contains the same few ingredients to suppress appetite.

You can find the full list at, but for now, I’ll cover the ingredients I found most noteworthy.

Maltodextrin – Maltodextrin is generally known as a food additive. However, this corn-based sugar replacement is also a good carbohydrate source. Carbs may seem like the last thing you want when trying to lose weight, but they’re a good energy supply. If taken after a workout, maltodextrin replenishes energy sources. However, maltodextrin also spikes insulin production, which tells your body to store sugars as fat. For this reason, you should be careful about when you consume Slimful.

Soy Protein Isolate – Any protein source is good for building muscle, soy protein isolate included. With greater lean muscle mass, your metabolism and caloric expenditure improves. This makes it easier for you to lose weight, and also gives you better muscle tone. However, protein doesn’t directly stimulate weight loss.

Konjac Flour – Konjac flour contains konjac root, also known as glucomannan. A potent dietary fiber, glucomannan creates a thick gel in the stomach that delays gastric emptying and keeps you feeling full. It also slows sugar and cholesterol absorption. In a 1984 study, test subjects taking glucomannan lost an average 5.5 pounds in 2 months [1].

Other ingredients in Slimful are food additives or flavor enhancers. They don’t do anything to promote weight loss.

As for the core formula itself, I’m not particularly impressed. Konjac flour is the only ingredient with real weight loss potential. Soy protein takes an indirect route to weight loss, and maltodextrin can even cause weight gain if used incorrectly.

However, perhaps there’s enough konjac flour in Slimful to make up for these deficiencies. According to the nutritional facts, there’s 2 grams of daily fiber in every Slimful bar. The proven amount is three 1-gram doses per day. If you eat at least 1 ½ Slimful chews daily, you’ll be getting that amount.

Remember, however, that in the clinical trial, this amount resulted in just 5.5 pounds lost over 2 months. This is slow, steady weight loss—not a miracle.

How to Use Slimful

Slimful is pretty easy to use. Manufacturers recommend eating a Slimful chew any time you have a craving. The best time to eat Slimful is before sitting down to dinner. This is said to help you eat smaller portions.

Always follow Slimful up by drinking a glass of water. Never eat more than 3 Slimful chews per day, and space them at least 4 hours apart.

Slimful Safety

Slimful doesn’t contain a lot of ingredients that cause side effects. Konjac does cause some minor bloating and gastrointestinal issues, but the water you drink after taking Slimful should dispel some of this.

The biggest concern I have with Slimful is its effect on blood sugar control. Konjac may interfere with blood sugar control and lower it to unsafe levels. This is especially true if you’re diabetic and taking medication to regulate blood sugar. If that’s the case, you can still use Slimful, but you should monitor your blood sugar carefully.

Otherwise, Slimful is gluten-free, and 3 out of the 4 flavors are also dairy-free. This should prevent most people from having an allergic reaction to Slimful.

Purchasing Slimful

Because it’s still a relatively new product, you won’t find much variety in pricing for Slimful. Generally, retailers charge $8.99 for a box of 5 bars and $20.99 for a 12-bar box.

Per bar, this isn’t outrageous, but you’d expect a discounted rate when buying in bulk. For example, similar products have sold 12-bar boxes for as low as $10.99.

However, Slimful does have good availability. You can find the product at online hubs like Amazon and, or in person at Wal-Mart, Walgreens, Rite Aid, Winn-Dixie, and A&P.

Recommendation on Slimful

Slimful isn’t a bad product, but it’s not a great one either. There’s a chance it can help you increase feelings of fullness, but if you use this as your sole weight loss aid, you’ll probably be disappointed. Instead, use Slimful as part of a well-regulated diet and exercise program, or alongside another weight loss supplement.


[1] Walsh, D.E., V. Yaghoubian, A. Behforooz. 1984. Effect of glucomannan on obese patients: a clinical study. International Journal of Obesity: Vol. 8, Issue 4.

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Comments on "Slimful"

Leave a Comment about Slimful here.

  1. Comment

    Ok for me it’s working. #1Not sure if y’all are realing giving the product a chance to show what it can do . #2 the person who said it taste nasty umm then you should just work out at the gym. #3 did u not read the complete review you can’t just take the bar and not work out n not try to eat right , you have practice workin out and eating right while on the bar so when you loss weight and no longer need the bar you can continue to loss weight even without it

    September 14, 2013 at 6:24 am
  2. Comment

    waste of money, false advertising, top 2 ingredients are sugar and corn syrup!!!

    Denise R Burnes
    July 10, 2013 at 10:55 pm
  3. Comment

    I had serious stomach pain and constipation for 24 hours plus and my energy level was incredibly low. I’m a type 2 diabetic. Unfortunately I didn’t check my blood sugar. I won’t EVER use it again. They may need to add a warning.

    V. Russell
    May 1, 2013 at 3:33 pm
  4. Comment

    ugh, what a disappointment. the taste was okay (it looked like an airhead with the color sucked out, lol) but i was ravenous an hour after i ate it, and i’d had a decent-sized lunch a couple hours before. my appetite hasn’t changed at all. then again, i am pmsing which makes me a hungry monster, so maybe nevermind.

    April 15, 2013 at 8:56 pm
  5. Comment

    I took one bite and it made me gag! I did not like the texture of the bars at all.

    April 11, 2013 at 7:16 pm
  6. Comment

    There is not enough fiber in each bar and too much sugar (12g). I noticed no more difference than drinking a glass of water when I feel hungry. I follow Jorge Cruise’s plan of 15/6 and eating one slimful bar I am three-fourths of my day’s limitation of sugar. Skip and bar and continue to drink water when you feel hungry.

    Miss Joyce Fox
    April 5, 2013 at 4:45 am

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