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Both men and women may actively seek ways to develop their physique. They strive to achieve an ideal body weight by putting on mass. Based on their age, weight, height, and sex, everyone has distinct calorie requirements.

Before calculating your estimated calorie needs, it’s necessary to start with a target. A good way to start is to develop a schedule for your particular objectives in order to gain weight.

If you have plans of gaining weight by supplement, then keep scrolling down to see the review of Optimum Nutrition Serious Mass Gainer in this article. It will cover anything from its quality to value for money.

Optimum Nutrition

Optimum Nutrition has dominated the wellness industry for years as one of the world’s largest brands of nutrition supplements. It has become their go-to brand for the need for supplements for daily workaholics. For quite a while now, Serious Mass is their popular mass gainer add-on. It has become their ambassador.

Weight gain powder styled with fork on a green background

Since 1986, Optimal Nutrition has been in the fitness market.

Most of their products have good levels of quality and satisfactory customer satisfaction. You can still rely on them for quality. This company manufactures a range of products, including Whey Protein, Creatine, and Glutamine.

Nutrition Facts

To be precise, 1,250 calories per serving are included in Serious Mass. You can easily mix the powder with water or milk and drink in no time. This is not just a supplement for muscle gainers. It’s a pocket full of calories.

The value should always be the first thing you look for when evaluating a nutrition supplement. The company states that it makes no compromise on quality of Serious Mass.

The supplement is rich in macro-nutrients, namely, proteins, carbohydrates, and fats, in addition, to being filled with calories. For hard-gainers, this optimal combination of macro-nutrients and large quantities of calories makes this food an ideal option.


Protein is known as the building block of muscle. It is the first substance that comes to mind when we talk about weight gain or muscle building. Protein helps to rebuild muscles that grow stronger and healthier in turn. The Serious Mass contains a whopping 50 grams per serving of protein.

Ideally, this should be 20-40%, with only one serving, of the overall protein intake.


If your goal is to build muscle or put on a healthier weight, you should consider carbohydrates. It is important to keep an eye on your carbohydrates. However, it is equally important to concentrate on having the right amount.

High protein weight gain powder

The optimal amount of carbohydrates will ensure that your levels of glycogen are ready to fuel your workouts.

On average, carbohydrates should account for half of your calories a day. It does not mean that you eat pizzas and burgers during the day. Good quality complex carbohydrates such as whole wheat bread, cereals, and vegetables should be the priority.

It contains a whopping 252 grams per serving of carbohydrates. This would make it a great product, given this number, to balance your diet with all three macro-nutrients.

Fats in Serious Mass

Although, a relatively small amount is needed, healthy fats should certainly be part of your diet. A serious mass weight gainer contains just 4.5 grams of fat. So, it is important to consider adding healthy fats to your diet with whole foods. Whole eggs, salmon, tuna, and sardines are some examples of foods that are rich in fat. Fats wouldn’t make you fat, there would be extra calories. Therefore, ensure that you hold this in check.

Review of Serious Mass

Serious Mass is a highly efficient mass gainer that seeks to help people gain weight and develop muscle with a fast metabolism. It makes it simple for people to fulfill their nutritional needs with 50g of protein and 250g of carbohydrates. It gives over 1250 calories each serving and encourages good weight gain and targets for muscle building.


You’re likely to see Serious Mass always make it to the top five if you apply to any of the lists on the internet for the best mass gainers. This is due to the reputation of Optimal Nutrition in the nutrition supplements industry. It has the consistency of the ingredients in this particular product.

For those who are serious about putting on weight, the combination of 50g of protein, 250g of carbohydrates, and 24 vitamins and minerals makes it a great quality mass gainer.

Creatine and glutamine are also included in the servings. This further means that when you push the limit in the gym, you will heal better and quicker.


Serious Mass comes in the following flavors:

  • Banana
  • Chocolate
  • Chocolate Peanut Butter
  • Strawberry
  • Vanilla
  • Cookies & Cream

It has some delicious flavors. However, it forms a dense shake. This might make these flavors a better choice for adding Serious Mass to Shakes and Smoothies. These further increase the calories in your home-made weight gainer shake. You can add other food products such as oats, peanut butter, and vanilla ice cream.

Mixability of Serious Mass

Although, mixing whey protein or mass gainer shake using a mixer is preferred, you might also use a shaker. Mixing protein powders with other foods, such as oats and peanut butter, make it easy to use a blender.

This makes the mixing of Serious Mass with milk and yogurt simple.

Mixing it with fluids in a shaker cup, however, is inconvenient. Even after constant shaking, you can still be left with lumps. The serving size of 2 scoops makes mixing with water or milk difficult. It can take a lot of time to mix in a way that makes it drinkable.

It is supposed to be like this because it’s a high-calorie weight gainer. Therefore, if you take the referred serving size for Serious Mass, consider using a blender.

Serious Mass Results

It will easily help you gain anywhere from 1-2lb of weight a week or even more with the right diet and exercise schedule. Along with that, you should be maintaining a high-calorie surplus.

Benefits of Taking Serious Mass

The following are the benefits of taking this supplement.

Calorie Replacement

Eating over 2500 calories a day might not be possible for hard-gainers and people with a low appetite. Here, Serious Mass will prove to be a perfect substitute where you can hold it on the go in a shaker. The calories include high protein and carbohydrates from it, which helps you gain muscle and prevent extra fat.

Chocolate flavored weight gain powder

High Protein Content

About 1.2-2 grams of protein per kilogram of their body weight is needed by an average person working in the gym. There are about 50 grams of protein in a single serving of Serious Mass. This makes it a great protein source to be added to the diet. It is extremely recommended to use Serious Mass Gainer as a post workout drink.

Serious Mass Contains Creatine and Glutamine

Creatine and glutamine are also essential supplements. Creatine allows your body to hold water and helps you push your limits in the gym. While, glutamine helps your body to recover more quickly from hard workouts. Since, both Creatine and Glutamine are already found in Serious Mass, you will not need them in the form of additional supplements.

Helps Gain Weight

Finally, helping you put on a healthier weight is the only intended aim of this product. You are supposed to be regularly involved in physical activity such as exercising in the gym and keeping a check on your diet. The effects of Serious Mass will certainly include gaining healthier weight.

Creatine is one of its main ingredients. It can cause fluid retention, stomach pain, diarrhea, nausea, fever, and muscle cramps. In addition, for those with diabetes or a history of kidney disease, this ingredient is not recommended. Not everyone will, however, suffer adverse reactions. 

Common Questions

Will serious mass make me fat?

This supplement can cause excess weight gain due to its high-calorie content. One pound of fat is equivalent to 3,500 calories.

When should I take a serious mass weight gainer?

BETWEEN MEALS: To maintain a healthy nitrogen balance and endorse a high-calorie diet, drink 1⁄2 -1 serving of Serious Mass between meals.

POST-WORKOUT: To promote full recovery, begin drinking 1⁄2 -1 serving of Serious Mass 30-45 minutes after exercise.

How do you drink optimum nutrition serious mass?

Use an electric blender to mix 2 scoops of the powder into 24 liquid ounces of cold water or milk. In this step, you can add fruit, peanut butter, and other calorie-contributing foods. TIP: New users can begin with a half-serving of 1 scoop.

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