Muscle Milk Pro Series 50 Review

When it comes to nutrients that are essential to life and health, protein is the jack of all trades. It plays many roles in the body, such as a source of energy, helps prevent disease and infection, and repairs damaged tissue.

While protein is abundant in foods, meats, eggs, fish, dairy products, legumes, seeds, and grains, it is also available in supplements or protein powder.

Consuming protein drinks is a useful way to boost your protein intake. They come in different flavors, are convenient, and portable. You can take protein powders by simply mixing them with water or a liquid of your choice.

One of the most well-known protein powder brands you can buy is from Muscle Milk, particularly its Muscle Milk Pro Series 50. In an lb5 canister of this Muscle Milk Pro Series powder, it can help support muscle growth and muscle rebuilding.

If you’re interested to know more about the Muscle Milk Pro Series 50, keep on reading. Based on our firsthand experience, we will walk you through the key ingredients of this product and its benefits to help you decide whether or not it’s worth buying a lb5.

TLDR: Review of the Muscle Milk Pro Series 50

Product Description

The Muscle Milk Pro Series 50g Protein Powder Knockout Chocolate contains a combination of high-quality fast-releasing and slow-releasing proteins, providing more sustained delivery of protein than whey alone.

This Protein Powder Knockout Chocolate is also an excellent source of vitamins and minerals. Per serving (two scoops) of the Protein Powder Knockout Chocolate, it contains 320mcg of vitamin A, 32mg of vitamin C, 7mcg of vitamin D, 5.3mg of vitamin E, and 0.84mc of Vitamin B12.

Other helpful vitamins and minerals you’ll get in the Muscle Milk Pro Series are Vitamin B6, Thiamin, Riboflavin, and Niacin all working together to help maintain muscle mass, support muscle growth, and muscle rebuilding.

You’ll also get medium-chain triglycerides that enhance workout endurance by impacting metabolism and the mitochondrial biogenesis cell process. The calcium and vitamin D content in this protein blend is included to make healthy and strong bones.

Just like other Muscle milk products, this protein supplement is NSF-certified for the sport. The NSF International American product testing is a mark of assurance.


  • Certified for Sport
  • Workout recovery fuel
  • Helps build muscle
  • Can be taken as a pre-or post-workout supplement
  • Contains vitamin D and calcium for strong bones
  • NSF-certified for sport
  • Easy to prepare


  • May not mix well with cold water
  • Some say the flavor is not chocolatey at all

Is it worth it?

Based on our firsthand experience, the Muscle Milk Protein Powder Knockout Chocolate is worth buying. You can even mix this in your smoothie and then you’ll get the benefits of protein blend without intense flavor.

This is good for workout recovery too and helps in building muscle since it contains a blend of whey protein and vitamins and minerals. 

Per two scoops of Muscle Milk already provides you at least 33% of the daily recommended intake for many minerals and vitamins. Not to mention it is rich in antioxidants too to help reduce oxidative stress in your body.

Interested? Click here to purchase!

In-Depth Review of the Muscle Milk Pro Series 50

Muscle Milk Pro Series Protein Powder, Knockout Chocolate, 50g Protein,  2.54 Pound: Buy Online at Best Price in UAE -

Supplement Facts

About 11   Serving Per Container

Serving Size 2.00 scoops(82g)

Amount Per Serving

Calories 310

% Daily Value*
Total Fat  5g6%
Saturated Fat  2.5g13%
Trans Fat  0g
Cholesterol  40mg13%
Sodium  180mg8%
Potassium  710mg15%
Total Carbohydrate  17g6%
Dietary Fiber  1g4%
Total Sugars  3g
Added Sugars  1g2%
Protein  50g100%
Calcium 780mg60%
Biotin 10.5mcg35%
Folic Acid 84mcg
Pantothenic Acid (as Calcium D-Pantothenate) 1.8mg35%
Chromium (as Chromium Chloride) 7mg20%
Magnesium 170mg40%
Copper (as Copper Gluconate) 0.18mg20%
Niacin (as Niacinamide) 5.6mg35%
Iron (as Ferric Pyrophosphate) 3.6mg20%
Vitamin B6 (as Pyridoxine Hydrochloride) 0.6mg35%
Riboflavin 0.46mg35%
Vitamin D (as Cholecalciferol) 7mcg35%
Iodine (as Potassium Iodide) 30mcg20%
Vitamin A (as Vitamin A Palmitate) 320mcg35%
Thiamin (as Thiamine Monohydrate) 0.42mg35%
Folate DFE 140mcg35%
Phosphorus 630mg50%
Vitamin C (as Ascorbic Acid) 32mg35%
Zinc (as Zinc Oxide) 2.2mg20%
Vitamin E (as dl-Tocopherol Acetate) 5.3mg35%

Other ingredients in the Muscle Milk Pro Series include medium-chain triglycerides, whey protein hydrolysate, milk protein isolate, whey protein concentrate, maltodextrin, sodium caseinate, alkalized cocoa powder, non dairy creamer, and potassium bicarbonate.

Who Is It Best for?

Based on our practical knowledge, the Muscle Milk Pro Series Protein is best for competitive athletes, recreational athletes, and fitness enthusiasts who maintain a workout routine or are physically active.

Adult athletes who prefer to build muscle mass will also find the Muscle Milk powder beneficial to avoid feeling weak when doing strenuous activity or lifting weights.

What Do People Say About It?


Lift – Run – Stretch reviewed the Muscle Milk Knockout Chocolate Protein Powder on YouTube. He said, “Just know that these are all milk-derived protein sources for you and that they are just going to help your body recover and also help you build some strength as well as long as you have obviously a workout routine going.”

“If you’re lazy, do not take this. You’re just gonna gain excess weight,” he added about the  Muscle Milk Pro Series 50.

BIG PIN also reviewed the product, although he purchased the 32grams strawberry flavor.

“My experience on this is that I like this product a lot. It helped a lot with my size as well as my strength, but I took this a while back and I only took it for about two months. [Nevertheless,] I saw a lot of changes in my workout as well as how I look. It was very helpful,” he said.


One customer shared through Amazon about his experience with the Muscle Milk 5-Pound Pro Series.

I read that they recently changed the formula and many people are saying it is harder to mix enough to get out the lumps etc. I have to admit, when I got my first jug of the new formula, they were right. It is harder to mix thoroughly. But I’ve experimented and have found a new and much better way to mix it. I have no problems with the following method.”

Another Amazon customer reviewed the Muscle Milk, saying, “My muscles knot up a lot and just plain hurt. I have a physical job and stay very active. I drink 1 16 oz glass of this a day and my muscle pain goes away also this has a lot of vitamins and minerals. 

I have been out on my e-bike and my muscles were hurting a lot. I had a glass of this muscle milk and no more muscle pain. The taste is very good. [It’s] similar to a very good chocolate cake batter. “


One Reddit user posted, “I love the Muscle Milk Pro Series 50 Gram Protein Powder.”

However, in another thread that discussed whether the Muscle Milk Pro Series Protein is good over other protein powders, someone answered “There was a dude on r/fitness [physical fitness community] who had a lab analysis done on all the commercial protein powders and muscle milk scored really low.”

Final Thoughts: Should You Buy it?

Drawing from our experience, if you follow a workout routine, recovering from an injury, or have just started a workout program, you can consider taking the Muscle Milk protein powder

Per serving, it contains essential amino acids, such as Leucine that play an important role in muscle building. It also contains calcium and vitamin D for healthy bones.

Our team discovered through using this product that this Muscle Milk product is also good for those who pursue a vegetarian lifestyle since they most likely eliminate common sources of protein from their diet, including fish, chicken, and meat, egg, and dairy.

If you like this article, you might want to read our other reviews at

Nathan Lloyd, MSc

I’m a personal trainer, based in Boulder, Colorado.
I service clients physically in the Boulder area, mainly in the ONE Boulder Fitness Gym, but am also available for online consulting and coaching.

If you’re interested in my personal coaching programs, please contact me via the contact page.

Leave a Comment