Updated: 05/17/2016 - Website operated by Leptigen

Muscle Milk Review - Does This Protein Supplement Really Work? Are unpleasant taste and artificial sweeteners deal breakers?

Editor's Review: 3.5 / 5.0
Muscle Milk Review

We’re hearing lots of buzz around Muscle Milk, so we decided to do an in-depth review, examining the side effects, ingredients, customer care and scientific studies. We also focused on numerous experiences and responses from all over the internet. Lastly, we condensed all of the data we collected to give you the bottom line.

EDITOR'S TIP: Combine Muscle Milk with a proven fat burner such as Leptigen for better results.

What You Need To Know

First off, Muscle Milk is a protein shake available from CytoSport. The ingredients are milk protein isolate, whey protein isolate, L-carnitine, L-glutamine, taurine, whey peptides and a vitamin and mineral blend. This supplement is suitable for men and women of all body types. A powder formula and a ready-to-drink shake are available. Muscle Milk comes in flavors like chocolate, vanilla creme, mocha latte, chocolate pecan caramel, strawberries n’ creme, orange creme, dark chocolate and several more. The purpose is to help build lean muscle mass, speed up recovery after workouts and boost energy levels. Also, you can drink Muscle Milk as a meal substitute in order to help with weight-loss.

This product has been around since 2006 and is available in common stores as well as online. Muscle Milk provides 16 grams of protein per serving and this supplement shake is lactose-free, but read on…

Unpleasant Taste – “Uh Oh?”

The first thing we noticed that came up time and gain about Muscle Milk ingredients was that dieters couldn’t manage to swallow it. According to our Research Editor, “There are countless customer complaints concerning the taste of Muscle Milk. We found a lot of these discouraging reviews on dealer websites like Amazon.”

One customer stated, “YUCK, cannot cover up the taste of this drink, have all kinds of protein drinks, including soy, none of them this bad, so bad it was intolerable, undrinkable, making me nauseated upon attempting to try.”

“Taste is horrible….nothing like cake batter,” said another user.

Scroll below for one of the best products we’ve seen over the last year.

Artificial Sweeteners – “Another Issue”

There are quite a few complaints regarding the artificial sweeteners used in Muscle Milk. These include acesulfame potassium and sucralose. One customer said, “Too much artificial sweetener. Yuck! Can’t get past the real sweet taste.”

Another dieter commented, “Too sweet, I regret buying this.”

According to our extensive research, if there is a certain facet of a diet product or program that is especially annoying or concerning (bad taste, high price, artificial sweeteners) the chances of real weight-loss are not very good at all. In other words, if Muscle Milk does is unpleasant to a lot of customers, this could be a serious problem.

The Science – “Any Proof?”

First of all, Muscle Milk does contain a good amount of protein and amino acids to aid muscles. On the other hand, there is no solid evidence that links Muscle Milk to weight-loss. Since we at DietSpotlight prefer to see documented clinical research that supports the diet product, we’re not sure the dieter should give it a try.

The Bottom Line – Does Muscle Milk Work?

So, are we ready to clear the shelves of this one? Some dieters will appreciate that Muscle Milk is easy to use as a meal replacement supplement. On the other hand, many customers do not care for the artificial sweetener taste of this protein product, which is one reason we’re not sold on recommending it. Furthermore, we found some user complaints about “dangerous chemicals” being used in Muscle Milk, which is definitely concerning.

If you are looking to drop some serious pounds of excess body fat, we recommend you go with a protein supplement or weight-loss pill that is backed by solid clinical results, does not cost you a fortune and is supported by plenty of positive user reviews.

Among the best products we’ve seen in 2015 is one called Leptigen. It uses a unique blend of four key ingredients, in which some have been shown in clincal-tests to help increase metabolism and improve overall fat loss. Furthermore, we were unable to pinpoint any user complaints concerning side effects and user responses on the web show people are seeing solid results.

Also, the company behind Leptigen is so confident in their supplement they’re offering a Special Trial Offer, which is a positive sign.

Learn More About Leptigen »
GD Star Rating

How Does Muscle Milk Compare?

Previous Muscle Milk Review (Updated February 3, 2014):

What You Should Know

Click Here To See Our Highest Rated Review

Muscle Milk, created by CytoSports, is a replenishment or preparation drink for pre or post workout. Many athletes use Muscle Milk before and after events, as well. Muscle Milk is also the name for a line of products by CytoSports. The line includes shakes, bars, and oats. Muscle Milk recently revealed a light version for women and men trying to control caloric intake.

List of Ingredients

Water, calcium and sodium caseinate, milk protein isolate, sunflower oil, canola oil, maltodextrin, fructose, potassium citrate, whey, natural and artificial flavor, vitamin mineral blend, cellulose gum, soy lecithin, monosodium phosphate, medium chain triglycerides, potassium chloride, sodium hexametaphosphate, acesulfame potassium, carneegnan and sucralose.

Vitamin and Mineral Blend: Vitamin A palmitate, cholecalciferol, vitamin E acetate, biotin, niacinimide, D-calcium pantothenate, thiamine mononitrate, cyanocobalamin, riboflavin, pyridoxine hydrochloride, folic acid, ascorbic acid, tricalcium phosphate, chromium chloride, copper gluconate, potassium iodide, ferric pyrophosphate, magnesium phosphate and zinc oxide. In depth information on what the effects of these ingredients can bound on the Muscle Milk Ingredients page.

Product Features

The name muscle milk is a misnomer - there is no muscle support in the ingredient list unless you stretch the inclusion of sunflower and canola oil to support lean muscle mass, which is commonly claimed, but not proven. Muscle milk is a calorie replacement shake that can be used in place of other fitness shakes. The taste is what draws in many fitness people and athletes as protein powders tend to have a less than desirable taste and gritty feel in the mouth. Each Muscle Milk shake contains 25 grams of protein and only 10 grams of carbohydrate thanks to the addition of sucralose - a calorie free sweetener.

Each Muscle Milk shake is packed with tons of vitamins, including a long list of B vitamins. The trouble is, B vitamins are used by the body and then pushed out quickly. If a multi-vitamin was taken in the morning before leaving for the gym, none of the B vitamins will be used by the body before being eliminated.


The fiber content is nearly non-existent in all Muscle Milk products. Even the oats and Muscle Milk bars contained a very small amount of fiber. Why not include a healthy ingredient like fiber when there is at least 25% of the RDA for nearly every other vitamin and nutrient?

Muscle Milk is priced about the same as other protein shakes and powders. Premixed shakes can retail for $2 or more a piece with powders priced $11, $21 and $56 depending on the size of the container.

See Our Featured


  • All ingredients are listed online.
  • High protein content should stave off hunger.
  • Lower carbohydrate totals.


  • Low fiber content.
  • Some Muscle Milk products have a lot of sugar.
  • Vitamins may be pushed out of the body if Muscle Milk is consumed after taking a multi-vitamin.


For the extreme athlete, Muscle Milk could be a viable alternative, but the dieter will not find the ingredients they are searching for in the 220 calorie Muscle Milk container. Muscle Milk Side Effects could also be a potential harm to some dieters. Light and diet versions are available, but protein always carried 4 calories per gram, so more protein will equal more calories. Light and diet versions tend to have less protein and thus fewer calories.

Muscle Milk Questions & Answers:

We narrowed down hundreds of user comments about Muscle Milk into this helpful FAQ.

What are the side effects of Muscle Milk?

Muscle Milk side effects reported by users include upset stomach, nausea, irregular bowel movements, bloating and gas.

What are the ingredients in Muscle Milk?

Muscle Milk ingredients include casein, milk protein concentrate/isolate, vitamins, fiber and amino acids, among others.

Does Muscle Milk work?

We didn’t find research proving Muscle Milk works. There’s solid science linking protein to weight-loss, but nothing points toward this product.

You may want to think about your decision to go with Muscle Milk and combine it with a supplement like Leptigen, which contains a formula containing ingredients that have been clinically-tested.

How much does Muscle Milk cost?

The cost of Muscle Milk depends on the product you purchase. On average, the RTD beverage cost $8 and the powders run $28.

How should I take Muscle Milk?

You should take Muscle Milk according to the directions on the label. Typically, you will use one to two scoops per day or consume one RTD beverage, multiple times per day.

Can I take Muscle Milk if I have a health condition?

People taking prescription medications, anyone with health conditions, those under 18 years of age or women who are pregnant or nursing should seek the advice of a healthcare professional prior to using a weight-loss supplement of any kind, including Muscle Milk.

What do users like about Muscle Milk?

Customers reported liking the cost of Muscle Milk and the variety of flavors.

What do users NOT like about Muscle Milk?

We found some users didn’t like the taste of Muscle Milk.

How do I contact the Muscle Milk customer service department?

You can contact the Muscle Milk customer service department by using the consumer feedback form or mailing correspondence to CytoSport 4795 Industrial Way Benicia, CA 94510.

Are there any regulatory issues with Muscle Milk?

Yes, there are regulatory issues with Muscle Milk. The parent company, CytoSport, was cited by the Food and Drug Administration in June of 2011 for mislabeling products. Supplements stated they didn’t contain milk, when in fact they did.

Is Muscle Milk lactose-free?

Muscle Milk RTD is lactose-free, but the powder contains milk ingredients.

What are the calories in Muscle Milk?

The calories in Muscle Milk vary by product. Several RTD products contain 100 calories, while the powder can contain as much as 300 calories per serving.

Does Muscle Milk come with a guarantee?

Considering Muscle Milk isn’t sold on the official website, there’s no mention of a guarantee. Contact the seller for additional details.

Do you know of any special deals or discounts on Muscle Milk?

There are deals and discounts on Muscle Milk, just not through the official website. Trusted retailers selling the supplement offer promotions. However, the last few months have been racing by with our readers taking advantage of Leptigen’s Special Trial Offer, which is simply the cost of shipping and handling. Click here to give it a go.

23 User Reviews About Muscle Milk

Leave comments below
  • 1

    I been drinking muscle milk for about a year I actually love the taste, if it taste like cake add a little bit more water or milk to it,or buy the pre made bottles,I use 1%milk, and I do mix at times with water but I put an ice cube to make it nice and cold.


  • 2
    brian borelli

    I just started this product yesterday it seems to keep me full I dont mind the taste at all maybe it taste like cake batter but I have had way worse like medicines you have to take like immodium liquid when your sick that taste awful.


  • 3
    Kyle Czworkowski

    can a 13 yr old drink or take muscle milk ?


    Arnold (Editor)

    Hey Kyle, we do not advise you to take this or any muscle enhancing supplements until you have reached at least 18 years old. sorry…


  • 4

    please tell me any side effect of muscle milk… and my ages is 22 year can i use this..????


  • 5
    Your Name

    can u drink muscle with out workin out


  • 6
    Your Name

    please tell me any side effects of muscle milk..???



    did U even read the review??


  • 7

    I live off muscle milk “love the taste” I can’t swallow solid foods due to paralyze throat from bacteria meningitis muscle milk has kept me alive I drink 10 cases a month am having bathroom problem any suggestions?


  • 8

    Is if safe for 13 years old boy to take? He’s likes to work out and lift weights.


    Your Name

    No it would affect his growth hormones


  • 9
    d. mcquillon

    Horrible after taste on both the regular and light. Too too sweet.


  • 10

    I’m wanting to build my muscles back up & I am afraid that if I start muscle milk & I get off schedule working out (my work shift changes a lot) I will gain unwanted weight. I’m a 20 y/0 female & I don’t wanna try anything that will harm my body or health when I start trying to have kids. Any suggestions???


  • 11

    Can you get muscle milk without the sweetners?


  • 12

    My husband had gastric bypass. they told him to drink protein drinks. Would muscle milk help to with muscle mass. And how much should he drink


    Big D

    You may want to read the Livestrong review. A dietician recommended the Ensure Active. 25g protein at 210 caleries. I had a similar surgery and try to get protein first; I’ll have to for the rest of my life.


  • 13
    rod at muscle milk side effects

    Very detailed article about muscle milk the problem I have with muscle milk is that I’m lactose intolerance and the side effects can be pretty bad side effects because of the milk content, and when I do take any kind of protein drink I have to mix it with water, not a very good taste….not sure if my post went through so I posted again…sorry admin



    They have Muscle Milk Soy ( non lactose ) it’s in every grocery store.


    Your Name

    I mix my whey into maple sugar oatmeal makes the chocolate peanut butter fast great with no milk


  • 14
    Dale F Stockstill

    I am 65 years old and was in a very bad industrial accident 3 yrs ago that left me with a smash up right leg. I lost 50 lbs and was down to 143 pounds. My daughter got me started on Muscle Milk and I have been able to regain 20 lbs back to 163 lbs in 6 months. So the produt can be used in more ways than one.


  • 15
    Bj smith

    Muscle Milk has “metal” in it can it cause my muscles in my legs to hurt?


  • 16
    sam doucette

    I’m wondering if the sweetners in muscle milk meal relacement will hinder my weight loss? im using 1 scoop in the morning for breakfast and 1 scoop in the afternoon for lunch….. is this wise?



    U wAnt to try the protein meal replacrment shake i been using for the past 5 months its tastes sooo good not only is it exellent for protein and a satifyin meal replacement it also helps wir weight loss cuz it helped me loose 19 in less than a month and i gained around 13 pounds in muscle


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