Crazy Nutrition Mass Gainer Review (2024)

March 7, 2023

Are you sick of eating yourself sick? I did it for many years as a skinny hard gainer. I did not leave the dinner table until I felt so full that I could barely stand up. At some point, you get tired of eating, and the idea of drinking a shake at least gives your jaw a rest!

You may have tried a few mass gainers before. Some taste okay, some causing bloating and gas, others downright awful. How does Crazy Nutrition Mass Gainer stack up against the giants in the supplement industry?

  • Whole food natural carb sources.
  • Digestive enzymes to reduce bloating and stomach discomfort.
  • Reformulated to have fewer carbohydrates making it the perfect meal replacement.
  • Tastes like a light chocolate shake.
  • Free lifetime access to Muscle & Health magazine.
  • 60-day money-back guarantee so you can try risk-free.


  • Only chocolate and vanilla flavors.

Crazy Nutrition Mass Gainer

Crazy Nutrition Mass Gainer Review

An in-depth review of Crazy Nutrition’s Mass Gainer must go past the typical taste and how it mixes. We need to go deeper and analyze the formulation to see if it is worth its weight. So, let's start with the formulation. If the product doesn't have the right ingredients and the proper ratio of ingredients, the taste and how it mixes don't matter.


I’m going to come out and say it from the beginning. I love the ingredients list of Crazy Nutrition’s Mass Gainer. There are very few mass gainers on the market that use natural food sources for their carbohydrate content.

Instead, companies will often use cheap carbohydrate fillers like maltodextrin. Maltodextrin has its purpose. For example, fueling a hard workout is easy and quick to digest, giving you instant energy.

However, it is essentially pure sugar without the sweetness, so if you're using mass gainer as a meal replacement, this can be less than ideal.

Crazy Nutrition throws this typical formulation on its head and uses multiple natural food sources to fill the carbohydrate content. Here’s a quick rundown of the main ingredients:

  • Gluten-free oats
  • Pea starch
  • Whey protein blend of whey isolate and concentrate
  • Sweet potato flour
  • Creatine monohydrate
  • Flaxseed powder

These are the main ingredients of the Mass Gainer. Let's break down each ingredient and why they are a great addition to the Crazy Nutrition Mass Gainer.

Gluten-Free Oats

Oats are a staple carbohydrate for the physique enthusiast to the professional bodybuilder. They are high in fiber and slow-digesting, with the added benefit of providing minerals such as magnesium and zinc.

Pea Starch

Many vegan and vegetarian supplements take advantage of peas to provide protein in powder form. But they double up as an excellent carbohydrate source too. You also get a healthy dose of vitamin K, fiber, and zinc.

Whey Protein

Whey protein has the highest essential amino acid (EAA) content out of any protein source. EAAs are essential because your body doesn't make them, so you need to ingest them from food and are required for building muscle [1].

Sweet Potato Flour

Sweet potato is not only a great carbohydrate but also an epic source of vitamin A and B6. It’s high in fiber and provides the antioxidant beta carotene.

Creatine Monohydrate

Creatine is the most studied sports supplement on the market and one of the most effective. Taking creatine regularly improves strength by 8% compared to a placebo and increases the number of reps performed with a given weight by 14% [2]. All of that equals more significant gains in muscle mass.

Flaxseed Powder

We can't forget healthy omega 3 fats. While animal sources are better for omega 3 supplementation as they are more bioavailable, there is no way you could put fish oil within a mass gainer without a horrible taste. Not to mention you cannot make it into powder form. Flaxseed is an excellent non-animal alternative.

There’s more to Crazy Nutrition’s Mass Gainer than the main ingredients. They’ve also included:

  • Panax Ginseng
  • Digestive enzymes

Panax Ginseng is rooted in traditional Chinese medicine that has made its way into the Western world. While most traditional Chinese ingredients don’t have much scientific backing, Panax ginseng breaks the mold.

Panax Ginseng has been shown to improve memory, attention, mental health, and social functioning [3,4]. Not a bad side effect for a mass gainer.

Digestive enzymes are an added bonus. They have added enzymes to break down lactose, carbohydrates, protein, and fat so you don't experience bloating and gas.

Macronutrient Breakdown

Of course, the protein, carbohydrates, and fat ratio will make or break a mass gainer. Crazy Nutrition has since updated their formula, packaging, and container size. Here is how the old macronutrient breakdown looks:






51 g


100 g (6 g from sugar)


8.8 g

And the new macro breakdown:






40 g


55 g


10 g

As you may notice, the carbohydrates per serving have been almost halved. The protein has been reduced slightly, reducing caloric value per serving. I love this move. I’ve mentioned many times in my mass gainer articles to avoid mass gainers with ridiculous serving sizes.

The Crazy Nutrition Mass Gainer hits the nail on the head. You can add a serving to your regular diet and not overshoot your caloric surplus limiting fat gain.


Mass Gainer Crazy Nutrition

To ensure they made a great-tasting product, they only have chocolate and vanilla. Better to do two flavors very well than multiple that doesn't taste great, in my opinion. Crazy Nutrition has done this, and their Mass Gainer tastes just as great as their protein supplement.


Surprisingly, the Crazy Nutrition Mass Gainer mixes very well, even when shaken in water. Just be aware that their recommendation of 400-500 ml of water per serving is no way near enough for it to mix thoroughly.

Most companies recommend 400-500 ml for their mass gainers, and it is never enough, so I can't fault Crazy Nutrition. Just fill your shaker as high as possible, or use a larger bottle.


Sure, there are cheaper mass gainers on the market. But that’s because they use cheap fillers to increase their calorie count to offer their products dirt cheap. Crazy Nutrition uses natural food sources, so it would be impossible to meet the same price expectations. Here's what to expect and how you can get a discount by buying in bulk.

  • 1 Bag (20 servings) = $89.99 OR $62.99 on subscription.

You can do this all free of risk due to their 60-day money-back guarantee. If you’re not happy, you can get all of your money back! All of these epic features of the Crazy Nutrition Mass Gainer is why we've ranked it the #1 best weight gain supplement for skinny guys.

Crazy Nutrition Mass Gainer

Frequently Asked Questions About Crazy Nutrition Mass Gainer

What Is A Mass Gainer?

A mass gainer is similar to a meal replacement supplement. It is a high-calorie powder with a specific ratio of protein, carbohydrates, and fats. It is designed for use in addition to a typical daily diet to gain muscle mass.

Why Should I Use A Mass Gainer?

A mass gainer should be used when you can no longer eat enough food to gain muscle mass. At some point, you may find you physically cannot eat more. Drinking extra calories with a mass gainer can be an easy way to get extra calories.

Will This Mass Gainer Cause Bloating or Gas?

Due to the added digestive enzymes, you won’t experience bloating or gas side effects. However, your belly will be full of liquid!

Is Mass Gainer Safe?

A mass gainer is perfectly safe. It's food in powder form designed to increase your caloric intake for easy consumption.


Crazy Nutrition Mass Gainer is one of the top mass gainers on the market in my experience. If you’re looking for a mass gainer that uses natural food sources and not cheap carbohydrate fillers, then you’ve found your supplement.

Crazy Nutrition Mass Gainer


1. Wolfe, R. R. (2017). Branched-chain amino acids and muscle protein synthesis in humans: myth or reality?. Journal of the International Society of Sports Nutrition, 14(1), 1-7.

2. Rawson, E. S., & Volek, J. S. (2003). Effects of creatine supplementation and resistance training on muscle strength and weightlifting performance. The Journal of Strength & Conditioning Research, 17(4), 822-831.

3. Kennedy, D. O., Scholey, A. B., & Wesnes, K. A. (2001). Dose dependent changes in cognitive performance and mood following acute administration of Ginseng to healthy young volunteers. Nutritional Neuroscience, 4(4), 295-310.

4. Coleman, C. I., Hebert, J. H., & Reddy, P. (2003). The effects of Panax ginseng on quality of life. Journal of clinical pharmacy and therapeutics, 28(1), 5-15.

About the Author

I am a professional strength & conditioning coach that works with professional and international teams and athletes. I am a published scientific researcher and have completed my Masters in Sport & Exercise Science. I've combined my knowledge of research and experience to bring you the most practical bites to be applied to your training.

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