Muscle Milk Vs Whey Protein: Which is The Best For Muscle Gain?

Proetin powder with the title "Muscle Milk Vs Whey Protein: Which is The Best For Muscle Gain?"

Both muscle milk and whey protein are good protein sources geared towards workout enthusiasts.

Whey protein is an excellent way to increase your protein intake for fitness benefits and weight loss.

Muscle milk, on the other hand, is an better choice for bodybuilders looking to add serious bulk.

Best Muscle Milk

Muscle Milk Pro Series Protein Powder, Intense Vanilla, 2.54 Pound

Muscle Milk

Pro Series Protein Powder

Best Whey Protein

BSN SYNTHA-6 Whey Protein Powder, Micellar Casein, Milk Protein Isolate, Chocolate Milkshake, 48 Servings (Packaging May Vary)


SYNTHA-6 Protein Powder

A large percentage of people who hit the weight room are doing so to get serious gains. One way to do this quickly (aside from lifting some hefty iron) is to ensure you have the right supplements in your stack.

With so many options on the market these days, it can be hard to keep up with which is your best option for muscle gain and whether they can live up to the hype.

In this article, I’ll give you the lowdown on everything you need to know about muscle milk vs whey protein.

What is Protein and Why do we Need it?

Not only is protein present in every cell in our bodies, it is what helps our body to build new cells and repair damaged ones.

When you workout with weights, your muscles rip a little bit – that’s why it’s called ‘getting ripped’.

What protein does is repair those muscles, while at the same time making them bigger and stronger. We do this over and over again and thus, earn our tickets to the gun show!

For your muscles repair the damage after a brutal training session before your next workout begins, a high dose of protein is needed.

Protein is not only for gym ninjas though. It has many benefits for those looking to lose weight as it promotes satiety and helps you to eat less.

Believe it or not, numerous studies have shown using whey protein could help fight against some of the more common cancers. (source) These include both prostate (source) and colon (source) cancer.

Measuring scoop of whey protein powder with a bowl on wooden surface

What is Muscle Milk?

Muscle Milk is a protein supplement made popular by manufacturer CytoSport. Their protein supplement offers a mix of whey and other milk proteins, with added benefits of vitamins and minerals.

Muscle milk is designed specifically as a meal replacement and is more beneficial to those looking to gain weight.

Each scoop of the powder variety offers over 300 calories. It’s recommended to take three times daily, meaning a total of 900 calories added each day. This will easily create a caloric surplus, leading to weight gain.

If you happen to be Dwayne ‘The Rock’ Johnson and workout about three times daily, six days per week and are looking to get seriously huge, muscle milk could be an excellent option for you.

It’s worth mentioning though that muscle milk has faced some controversy since it appeared on the scene, mainly due to the way in which it is advertised.

Firstly, CytoSport received an official warning letter from the U.S. Food and Drug Administration (FDA) as they advertise the product as containing ‘no milk’. However, it does include milk derivatives like whey and casein protein and therefore may cause allergic reactions. (source)

Moreover, the company got in some trouble for advertising muscle milk as a ‘healthy’ option. However they were ordered to pay to pay $5.3 million in a class action lawsuit for the use of misleading use of language as with these shakes containing as much fat as a krispy kreme donut, they are certainly less than healthy!

If you’re not working out like a gladiator, muscle milk is probably not the best choice for your post-workout protein supplement.

Protein powder forming a muscular man.

What is Whey Protein?

When milk is acidified, you’re left with two things. Curd is solid and whey is liquid. Whey can then be turned into a powder by removing all of the water. It’s then sold on to the masses of people looking to get gains.

There are numerous types of protein powder including speciality brands designed for lactose and dairy free users. However, when someone talks about protein powder generally, it’s safe to assume the majority are talking about whey protein.

Whey protein is one of the most convenient and easily absorbed forms of protein. This is why it’s perfect after a workout. It can be absorbed into the body in as quickly as 15 minutes, making it a number one favorite with gym goers across the globe.

When to Choose Muscle Milk

Muscle Milk Pro Series Protein Powder, Intense Vanilla, 2.54 Pound

Muscle Milk

Pro Series Protein Powder

Muscle Milk Pro Series Protein Shake, Go Bananas, 40g Protein, 14 FL OZ, 12 Count

Muscle Milk

Pro Series Protein Shake

Cytosport Muscle Milk Genuine Protein Shake, Chocolate, 25g Protein, 11 FL OZ, 12 Count

Muscle Milk

Genuine Protein Shake

If you’re a serious body builder and you are looking to bulk up both your weight and muscle mass, muscle milk would be a great option for you.
Bear in mind that this is not recommended for casual gym enthusiasts or those looking to lose weight. Without an intensive workout regimen, you’re likely to pile on pounds of fat, not muscle.

Muscle Milk Pros

  • High protein content – 50 grams per shake
  • Comes in powder form
  • Milk protein complex including whey and casein
  • Works as a meal replacement
  • Encourages weight gain
  • Full amino acid profile
  • Added vitamins and minerals

Muscle Milk Cons

  • High in calories, carbs and fat
  • May trigger allergies
  • Not healthy
  • Expensive

When to Choose Whey Protein

BSN SYNTHA-6 Whey Protein Powder, Micellar Casein, Milk Protein Isolate, Chocolate Milkshake, 48 Servings (Packaging May Vary)


SYNTHA-6 Protein Powder

MusclePharm Combat 100% Whey, Muscle-Building Whey Protein Powder, 25 g of Ultra-Premium, Gluten-Free, Low-Fat Blend of Fast-Digesting Whey Protein, Chocolate Milk, 5-Pound, 68 Servings


Combat 100% Whey Protein

Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Lb (Packaging May Vary)

Optimum Nutrition

Gold 100% whey Protein

Whey protein is a good choice for those who are hitting the gym to keep up with Kylie and Kim rather than bulk up to MMA fighter level.

Whey protein also makes a good choice for those looking to lose weight.

Whey Protein Pros

  • Around 20 grams per serving 100% whey protein
  • low carbs per serving
  • Low calories per scoop
  • Non GMO
  • Natural sweeteners (stevia) and flavors
  • No artificial additives or fillers
  • Manufactured in GMP and NSF approved facility
  • Made in USA

Whey Protein Cons

  • Too sweet for some people


In terms of which is best for muscle gain, muscle milk would probably be the best choice if you’re looking to get serious results.

However, if you’re looking to just gain a small amount of lean muscle, sticking with whey proteinwould be the best option.

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