Updated: 11/11/2017

There’s a lot of talk surrounding 18 Shake, unfortunately, not all of it is positive. Our team got into the ingredients and side effects of this meal replacement. We broke down the different components in an attempt to figure out why so many customers are complaining about ineffectiveness. We then turned our attention to the scientific research and found that nothing exists on this formula. The makers claim this is a “luxury meal replacement” shake, but right now we’re just hoping this isn’t another cash grab.

18 Shake Readers: Click here to find out why we're giving away samples of our product, Burn HD.

What is 18 Shake?

First off, 18 Shake is a meal replacement that contains:

  • Whey Protein Concentrate/Isolate
  • Fibersol-2
  • Vitamins
  • Minerals

This product is supposed to suppress appetite and aid weight loss, but some experts actually say that meal replacement shakes can do more harm than good – pointing to some pretty uncomfortable side effects, including hunger and even weight gain.[1]

18 Nutrition is the company behind 18 Shake. You can purchase the supplement on the official website and through trusted retailers. We would suggest caution when ordering. Some customers pointed to a lack of communication with the service department, as well as a pretty stingy return policy.

Products Similar to 18 Shake

Guarantee – “Read the Fine Print”

The first concern noted by customers was the confusing 18 Shake guarantee. “It’s clear that the company gives your money back if you’re not happy with the product,” said our Research Editor. “If you don’t read the fine print, there may be more to the process.”

“I ordered this through 18 shakes website. The return policy is a bit stingy,” said a customer. [2]

“The company said the 30 days started when I ordered it, not when I received the product,” stated a dieter.

We found that some users expressed a different view on the return policy.

“You have to read the details and I did. I didn’t like one of the flavors and returned the product without hassle,” said a customer.

18 Shake Customer Testimonials

Customer Reviews of 18 Shake – “Positive and Negative”

We found 18 Shake reviews offering positive and negative takes on the supplement. “I have only been using once a day due to the price,” reported a user.

I really haven’t seen much in the weight loss dept,” said a customer. [3]

There were several dieters that shared a more positive take on 18 Shake.

“I have lost weight, but more importantly inches, while on my shake “diet”. I have received so many compliments and I have given even more recommendations. Thank you 18Shake,” reported a dieter.

I tried 18 Shake for the first time and it’s great. I mix it with almond milk and different kinds of berries and have it for breakfast,” stated another.

Based on our research, long-term success may be reduced if customers offer a cynical take on a supplement. There are concerns if users rely on the unpleasant experiences relating to 18 Shake.

The Science – “Clinical Evidence?”

There’s no science on the official website. Meal-replacement shakes can help dieters lose weight when they are used in place of other foods. While 18 Shake offers solid ingredients, there’s no research showing the product will help you lose weight. At DietSpotlight, it’s important to find clinical support for weight-loss claims. When it’s lacking, we become a bit hesitant. [4]

Also: read our Burn HD Weight-Loss Kit review »18 Shake Ingredients

The Bottom Line – Does 18 Shake Work?

Are you ready for the final take on this one? We like that 18 Shake side effects weren’t mentioned and that it contains some natural ingredients. The lack of research connecting it to weight-loss is a bit concerning, as well as review talking about the lack of results and confusion with the guarantee. [5]

If you’re looking to drop that extra weight, we suggest going with a supplement formulated with clinically-tested ingredients shown to promote weight-loss.

Among the most exciting products we’ve seen so far this year is Dietspotlight Burn. The formula contains four clinically-tested ingredients that research says shows they can help with fat loss, improvements in metabolism and hunger. We’ve even searched for user reviews to back these claims and we found them all over the web.

Also, the makers of Dietspotlight Burn have such confidence in the formula that they’re offering a Special trial offer so you can give it a try.

Learn More About Burn HD »
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18 Shake

What are the side effects of Shake 18?

Shake 18, another name; users reported 18 Shake side effects included upset stomach, bloating and nausea.

What are the ingredients in Shake 18?

18 Shake ingredients are whey protein concentrate/isolate , Fibersol-2 (soluble fiber), vitamins and minerals.

How do I know if 18 Shake is right for me?

Choosing the right product is the #1 question asked by DietSpotlight readers. We recommend trying any product before buying it and know that finding a product with a sample offer is near impossible - so we created our own product, Burn HD, with scientifically backed ingredients.

Click here to get your sample of our powerful fat burner today.

Does 18 Shake work?

There is a wealth of information about the ingredients in 18 Shake. We found solid science showing Fibersol-2 reduces hunger, but the company doesn’t provide clinical research supporting weight-loss claims.

How much does 18 Shake cost?

18 Shake costs $79.99 for one bag, $159.96 for two and $239.95 for three. You receive a 25% discount on multiple purchases.

How should I use 18 Shake?

You should mix one scoop of 18 Shake with your favorite beverage and drink multiple times throughout the day. If used as directed, each bag lasts less than three weeks.

Is 18 Shake a meal-replacement?

Yes, 18 is a meal-replacement.

How many calories are in Shake 18?

Each serving of 18 Shake contains 90 calories.

How many grams of protein are in 18 Shake?

Each serving of 18 Shake contains 19g of protein.

Is 18 Shake gluten-free?

Yes, 18 Shake is gluten-free, meaning there’s less than 20ppm per serving.

Do I have to diet with 18 Shake?

No, you don’t need to diet with 18 Shake, but the company recommends eating healthy to better results.

Does 18 Shake come with a guarantee?

18 Shake comes with a 30-day guarantee. You can only return unused bags to receive a refund.

Do you know of any special deals or discounts on 18 Shake?

There are special deals and discounts on 18 Shake. When you purchase more than one bag, you receive 25% off the total price.

18 Shake Ingredients

18 Shake claims to be a "luxury meal replacement." If you take a look at the label, which is available on the official website, you'll see whey protein and fiber. There's nothing "luxury" about the ingredients.

18 Shake Ingredients and Supplement Facts

Serving Size: 1 Scoop
Serving Per Container: 16
Amount per Serving% DV
Whey Protein Concentrate15.7g*
Whey Protein Isolate3.39g*
Vitamin and Mineral Complex**

Other Ingredients: Xanthan gum, natural flavoring, stevia extract

After thoroughly researching the 18 Shake ingredients, we provided the details and specifics you need.

Whey Protein Concentrate

Dozens of supplement shakes and bars are made with whey protein concentrate. This key ingredient is a byproduct of cheese manufacturing. It’s known as the least expensive form of whey protein.

What is it Supposed to Do?

Often, whey protein concentrate is included in fitness shakes and bars in order to help with muscle building and workout performance. It assists with muscle repairs and minimizes downtime after workouts. Furthermore, it helps reduce appetite.

Clinical Research

According to the Mayo Clinic, “Whey protein has been studied for weight-loss and the regulation of appetite. Studies have shown whey protein to be an inexpensive source of high-quality protein and that it may reduce short-term food intake. Overall results suggest that whey protein may promote better weight-loss when compared to lower-protein diets.” [1]

Whey Protein Isolate

Unlike the concentrate variety, whey protein isolate has been further processed. In other words, the lactose and fat have been removed from this ingredient. It’s typically at least 90 percent lean protein. Furthermore, it digests faster than whey protein concentrate.

What is it Supposed to Do?

Like other types of protein, whey protein isolate is intended to reduce appetite, aid with muscle repairs, boost energy levels and help you build lean muscle tissue. It’s often found in workout shakes and bars, and can be used in place of high-fat proteins like those found in some meats.

Clinical Research

Some research has linked whey protein isolate to weight reduction. “Drinking a whey protein shake may help prevent some muscle loss, which may make it a little easier for you to continue to lose fat. Whey protein may also help you control hunger,” [2] according to a 2014 study published in the European Journal of Clinical Nutrition, which may make it easier for you to stick with your diet.

Digestive Resistant Maltodextrin

Maltodextrin is basically a polysaccharide that is used in a number of food products and supplements. It’s manufactured from starch and is used as an additive. As for digestive resistant maltodextrin, this is a variety that is not absorbed or digested by the body. Instead, it is passed through the digestive tract (intestines).

What is it Supposed to Do?

The main purpose of digestive resistant maltodextrin is to help with regularity and fullness. It functions like a type of fiber that assists with bowel movements. This in turn may help reduce bloating. An example of this ingredient is Fibersol, which is used in some weight-loss supplements.

Clinical Research

Leslie Bonci, RD, author of the American Dietetic Association’s Guide to Better Digestion, says, “Indeed, more than 160 studies have examined this little known nutrient’s remarkable health and weight-loss benefits.” Furthermore, “Not only does it increase your body’s ability to burn fat, but it also fills you up and reduces overall hunger.”

One that’s caught our attention is one called Dietspotlight Burn. It contains clinically-tested ingredients and has been shown to help accelerate metabolism and ignite fat loss. Want to learn more? Click above.

18 Shake Scientific Abstracts

Whey Protein Concentrate

Participants on Prolibra (whey-protein supplement) had lost substantially more body fat in comparison to the control participants in both the completer (2.81 versus. 1.62 kg P = 0.03) as well as responder (3.63 versus 2.11 kg, P = 0.01) groups. Fat to lean loss ratio was much greater (kg fat lost/kg lean lost) for whey-supplement group for completer (3.75 vs. 1.05) as well as the responder (3.39 vs. 0.88) groups.

In conclusion, in control as well as the treatment group, there was significant weight-loss with a 500-calorie decreased diet. Participants taking the supplement lost substantially more body fat as well as displaying greater preservation of lean muscle in comparison to the control beverage group. Because the participants ingesting the whey-protein supplement lost 6.1% of their fat mass, as well as a 5% decrease in body fat mass, which is known to decrease the risk of any obesity-related disease, this study produced results which show the supplement having practical significance. [1]

Whey Protein Isolate

There was substantially higher isometric knee extension strength following whey protein isolate supplementation three (P < 0.05) and seven (P < 0.01) days in from exercise-induced muscle damage recovery when compared to carbohydrate supplementation. Additionally, common tendencies for increased isokinetic forces (flexion and extension) were noticed throughout the course of the recovery period after ingesting whey protein isolate.

Knee extension strength was a substantially greater (P < 0.05) following seven days’ recovery. Plasma LDH levels tended to be lower (P = 0.06) in the whey protein isolate group throughout recovery. Most of the results of the study pointed to whey protein isolate attenuating the impairment in isokinetic as well as isometric muscle forces throughout exercise-induced muscle injury recovery. [2]


Significant delays had been noticed in hunger and elevated satiety for 90 to 120 minutes following treatment of 10g of Fibersol-2. The delays had not happened following intake of 0 or 5g Fibersol-2 at any given time. Control and 5g Fibersol-2 administration did not block elevations in hunger postmeal. The hunger and satiety scores had reduced significantly (P < .05) at every point in time relative to the first postmeal observation.

Glucagon-like peptide-1 and plasma peptide YY were substantially elevated in the intake of a meal accompanied with a tea containing 10g of Fibersol-2 in comparison to 0 or 5g Fibersol-2 (P < .05). This study has shown 10g of Fibersol-2 along with a meal triggered production of satiety hormones as well as elevated satiety. [3]

Summer Banks Dietspotlight Author
About the Author:

Summer Banks, Director of Content at Dietspotlight, has researched over 5000 weight-loss programs, pills, shakes and diet plans. Previously, she managed 15 supplement brands, worked with doctors specializing in weight loss and completed coursework in nutrition at Stanford University. full bio.

11 18 Shake Reviews

  • What's in it?
    YourBev Dow Name

    What is the protein from? What are the protein carbs and fat? Thank you

    • Richard (Editor)

      Hi Bev. The protein is whey protein concentrate and whey protein isolate. In one scoop (one serving) 18 Shake provides 19.09g of protein, 8g of carbohydrates and 1.5g of fat.

  •  Not worth the $!
    PattyCake (Verified User)

    The chocolate has vey little taste to it..very disappointed and definitely not worth the $$! Will be switching back to Shakeology; that one is worth the $$. Never switthing again!

    • Victoria (Editor)

      Hi! We agree, taste is a huge factor in weight-loss shakes. If you looking for a taste-less alternative, you might want to check out Dietspotlight Burn.

  •  I am down 30lbs
    Sebastien (Verified User)

    I started 18 shake 3 months agoo
    1 for lunch, light lunch and another shake for dinner
    Snack on almonds during the day
    I am down 30lbs as of this morning
    If you do it right it will work, I don’t get tired I am just motivated to keep going

    Thank you 18 shake just reorder supply for the next 2 months

    • Anonymous

      Hi, did u drink 2 scoops a day or did u make the recipes and typically have 4 scoops a day of the protien?

  •  Working toward progress.
    Joe Palacio (Verified User)

    Ive been using 18 shake for 2 months and I lost 25 pounds my goal is 40 pounds total. I’m very patient with my progress I also workout to increase muscle strength it does help suppress my appetite for about 3 hours, i believe everybody’s different when it comes to products and exercise its been working for me so I just ordered a three month supply again soon I’ll be on a natural meal program once I get to my goal. Thanks 18 shake 👍.

  • Yummmmyyyy

    I started this product 5 days ago. I love the convenience of it and I think it taste great! I use either Almond milk or skim milk to mix it. Down 4 lbs already which helps me make healthier dinner choices. It’s the boost I needed! Thanks 18shake!

  •  Very disappointed
    Sandra L.

    I ordered the shake18 after doing some research and I was very disappointed. First off I personally do not like the Vanilla flavor, but I can deal with that. The part that upset me was that 30 minutes after taking the shake in the morning I was hungry. It didn’t help with controlling my hunger and to be honest I saw nothing positive after the first week.

    • Victoria (Editor)

      Hi Sandra, you might need to lean towards more of an appetite suppressant product if that’s the case. One product that helps with suppressing appetite is Dietspotlight Burn; you should check that one out as well!

  •  Best shake EVER
    Melyssa (Verified User)

    I’ve been using 18 shake as needed for breakfast and sometimes a lunch replacement. I keep it at work so I don’t have to worry about bringing a lunch. My use is inconsistent and yet it still works. It’s the absolute best shake I’ve tried for killing hunger pangs fast!! I have the chocolate and find the sweetener to be off-putting. I put a scoop into my coffee and still use a splash of creamer and it’s my favorite way to drink it now, it really cuts the aftertaste and keeps me feeling full for hours. Going to try another flavor next time I order, hoping the aftertaste will be better.