Matrix Monster Calories Review: Good For Mass Gain?

A picture of Best Mass Gainer UK founder, personal trainer Andy Williams
Written By
Andy Williams
Last Updated on

Matrix Monster Calories is a popular weight gain powder on the UK market that’s caught people’s attention thanks to its high calorie content and low price tag.

Before diving into this detailed Matrix Monster Calories review, let’s get a quick supplement overview. Per serving, we get 588 calories, 65g of carbs, 22g of fat, and 33g of protein. That’s quite a balanced macro breakdown for a weight gainer.

So, you may be wondering: Does it really work? What do other users have to say about it? Fear not, as this review will explore the customer feedback of those who, like me, have tried Matrix Monster Calories. This way, you can decide whether this gainer is the right fit for you and your goals.

nearly 600 calories
Matrix Monster Calories
Front view of Matrix Monster Calories
Taste: 7/10
Mixability: 8.5/10
Ingredient Quality: 7/10
Mass-Building Potential: 8/10
Overall Rating: 7.6/10
  • Supports weight gain with almost 600 calories
  • Contains 33g of protein per 140g serving
  • Has very balanced macros (33g of protein, 65g of carbs, 22g of fat)
  • Comes in a big 4kg tub
  • Mixes really well and doesn’t sit too heavy on your stomach
  • Good value for money
  • Uses soy protein
  • Each serving has 47g of sugar

Matrix Monster Calories Ingredient Analysis

As mentioned, this Matrix mass gainer has a very balanced macronutrient composition, which indicates that it’s suitable to have as a standalone meal (but it’s not a substitute for a healthy, whole foods diet).

Matrix Protein Blend (33g)

To kick things off, the Matrix Protein Blend boasts a solid 33g of protein per serving which, admittedly, is a bit lower than average for a mass gainer. But honestly, for the price, I can’t really complain.

The Matrix Monster Calories nutrition facts

This blend includes a mix of whey protein concentrate, soy protein isolate, and milk protein concentrate. Here's how they can benefit you:

  • Whey protein concentrate: Provides a quick release of amino acids, helping your muscles recover and grow after a workout.
  • Soy protein isolate: A controversial protein source that may help improve muscle mass and strength. Typically avoided by most bodybuilders.
  • Milk protein concentrate: A slow-digesting protein that assists in muscle recovery over time, keeping protein synthesis elevated.

Obviously, most people prefer to keep soy protein out of their diet if they’re focused on building muscle. While most gainers use soy lecithin to help the ingredients mix together, the best of the bunch tend to favour milk proteins.

If you want a quality UK gainer with no soy, then I recommend checking out either XL Nutrition Xtra Mass or XL Nutrition Xtra Protein & Carbs. Both are solid options, although they have different macro compositions. 

Carbohydrates (65g)

The Matrix Monster Calories ingredients

Next up, Matrix Monster Calories offers a whopping 65g of carbs per serving, which gives us a 2:1 carb-to-protein ratio. The carbs come from maltodextrin, dextrose waxy maize starch, and oat flour. Here's what you need to know about these carb sources:

Of the 56 grams of carbs, 47 grams are sugar, which is very high even for a mass gainer. Now, if you take this Matrix weight gainer right after your workout, you may actually be able to use the sugar to good effect, especially after a long and fatiguing session.

However, the idea of drinking nearly 50g of sugar with some soy protein in the middle of the day just seems wrong to me.

Fat (22g)

Lastly, let's talk about the 22g of fat you'll get with each serving of Matrix Monster Calories. Fats are good for bulking because they’re more calorie-dense than protein and carbs on a per-gram basis.

I like that Matrix includes a good amount of fat without going overboard. So many gainers skimp on fat, leading to unnatural macronutrient compositions that you’d never get with a whole foods meal.

As a side note, if you’re on the market for an affordable shake that will trigger weight gain, then you can also check out my The Bulk Protein Company Serious Gainz review.

Will Matrix Monster Calories Trigger Weight Gain?

The Matrix Monster Calories scoop

You might be wondering if Matrix Monster Calories can actually help you gain weight. Well, if you drink it consistently, then yes! After all, gaining weight comes down to eating in a caloric surplus, which is something that a gainer like Matrix Monster Calories or Pro Power Rapid Weight Gain can contribute towards.

Calorically, Matrix Monster Calories packs a decent punch, with a very respectable 588 cals per serving. As mentioned earlier in my Matrix Monster Calories review, this is broken down into 65g of carbs, 22g of fat, and 33g of protein. 

As for taste and mixability, many users have found Monster Calories to be a very drinkable mass gainer. It seems like as time goes on, brands are becoming more refined with their formulas, which is leading to better mixability (it wasn’t always that way, let me tell you!).

Obviously, when you can easily whip up a shake without too many clumps, drinking it consistently becomes much less of a hassle.

Still, you won't magically see results overnight, and it's important to combine Matrix Monster Calories with a balanced diet and regular lifting to maximise your weight gain potential. 

Matrix Monster Calories Taste and Mixing

A man making a protein shake for his Matrix mass gainer review

With any mass gainer, taste is always a concern. After all, if your shake tastes like chalk, how are you meant to take advantage of its nutritional goodness?

Luckily, Matrix Monster Calories delivers on this front. Users have reported that it tastes great and doesn’t sit too heavy on the stomach, which mirrors my own experience with the supplement. This makes sense because, despite the name, Monster Calories isn’t a mega-calorie gainer.

When it comes to mixing, you'll be relieved to know that Matrix Monster Calories dissolves well and doesn’t clump. So, no need to worry about unpleasant lumps or grittiness in your drink.

Remember that Matrix Monster Calories—despite not being a mega-calorie gainer—still has 588 Kcal per serving, so it may be a little thicker than some other shakes you've tried. If you prefer a more diluted consistency, don't be afraid to experiment by adding a bit more liquid to your mix.

How To Consume Matrix Monster Calories

Overhead view of a Matrix mass gainer in a tub and shaker bottle

First things first, grab yourself a shaker or a blender—whatever suits your fancy. Now, add two scoops to between 500 ml and 600 ml of liquid. Two scoops are roughly equal to 140g of powder. All you need to do now is shake and enjoy!

Alright, your shake is now ready to be devoured. It's best to consume it immediately, and I'd recommend having it after your workout or as an additional meal when you're on the go. 

Remember, though, that consistency is key—make sure you're consuming Matrix Monster Calories on a regular basis to ensure those gains keep coming.

You could drink your shake before training to fuel your workouts, but I really recommend saving it for post-workout, as that’s when your muscles can best utilise all those calories, carbs, and protein.

Downsides of Matrix Monster Calories

A big tub of a Matrix weight gainer next to a scoop and shaker cup

As I’ve mentioned throughout this Matrix mass gainer review, Monster Calories certainly has its benefits, but there are a few downsides that you should be aware of before diving in.

First off, it's important to note that, like Freak Mass Gainer, Matrix Monster Calories contains soy protein. If you have a soy allergy or sensitivity, you should steer clear of this product. 

Additionally, soy protein isn’t exactly a favoured protein source among bodybuilders or serious athletes.

Another drawback is that Matrix Monster Calories is much higher in sugars than most mass gainers on the market. When you're trying to put on some weight, you might not worry too much about sugar content. 

However, drinking almost 100g of sugar per day (if you take 2 servings) is perhaps not the healthiest way to bulk up, although you may be able to utilise much of it if your workouts are long and intense.

Yet, despite these drawbacks, many Matrix mass gainer reviews still praise Monster Calories for its ability to trigger weight gain, which is what matters most when you’re trying to bulk up.

Information about Matrix Monster Calories 4kg

The Verdict

With an impressive 588 Kcal per serving, combined with 65g of carbohydrates and 33g of protein, Matrix Monster Calories has the potential to put some size on your frame.

It also tastes nice and mixes without any fuss, which is great considering the very reasonable price of this supplement.

With the vast majority of Matrix Monster Calories reviews being positive, there’s certainly no harm in giving this Matrix weight gainer a try. It’s a quick, cheap source of calories.

So if you don’t mind drinking some sugar and soy along with the other stuff, then I definitely think that Monster Calories is a solid option for those on a budget.

The #1 UK Mass Gainer
Crazy Nutrition Mass Gainer
Two bags of Crazy Nutrition Mass Gainer positioned side by side
  • Contains 488 bulking calories from 100% clean sources
  • Packed with a proven 40g protein blend for quick muscle repair and growth
  • Provokes noticable weight gain with 55g of complex carbs from oats
  • Tastes amazing (to my surprise!) and mixes easily
  • Offered at the absolute lowest UK price during April
A picture of Best Mass Gainer UK founder, personal trainer Andy Williams
Andy Williams
Andy Williams is a UK-based personal trainer and bodybuilder who coaches gym-goers of all levels using proven evidence-based techniques in strength training, nutrition, and supplementation. He’s tested over 70 different mass gainers for their ingredient quality and muscle-building effectiveness and regularly shares his findings in his mass gainer reviews.
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