Optimum Nutrition Serious Mass Review

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Serious Mass is one of the best mass gainers that has been offered by the company, and in this Optimum Nutrition Serious Mass review, you’ll find everything you need to make a decision on whether or not to buy this gainer.

Loaded with over a thousand calories in each serving, this supplement should already be there in your stack if you’re looking to gain weight.

Optimum Nutrition Serious Mass Nutrition Facts

Optimum Nutrition Serious Mass contains 1,250 calories per serving, and the powder is instantized to make it easier for you to consume it on the go. This isn’t just a mass gain supplement; it’s a bag full of calories!

on serious mass review

Why Serious Mass Weight Gainer?

optimum nutrition serious mass review

Serious Mass, among other supplements, is intended to give you a calorie boost. For hard-gainers, it might become difficult to maintain a calorie surplus every day.

For others, consuming enough calories throughout the day along with a hectic schedule may sound tiresome or not feasible. This is exactly where weight gainers come into play.

Weight Gainers, as the name suggests, help you put on mass by providing you the extra calories you need in a day to remain in a calorie surplus. See how I mentioned “extra calories”?

This implies that you should be getting most of your calories from calorie dense foods that are rich in nutrients. Top it up through the extra calories derived with this supplement, and you’re good to go.

How does Optimum Nutrition Serious Mass compare with other weight gainers? Checkout in the article where I’ve compared the top 10 weight gainers: https://www.gainingtactics.com/best-mass-gainer/

Optimum Nutrition Serious Mass Review

Serious Mass is a highly-effective mass gainer aimed to help people with a high metabolism build muscle mass. With 50g of Protein, 250g of Carbohydrates and over 1250 calories per serving, Optimum Nutrition’s Serious Mass makes it easy for people to meet their caloric needs and supports healthy weight gain and muscle building goals.

1. Quality

The combination of 50g protein, 250g carbohydrates and 24 vitamins and minerals make it a perfect quality weight gainer for those who’re serious about putting on weight.

Also included in the servings are creatine and glutamine, which further makes sure that you push your limit while in the gym, and recover better and faster.

If you’re purchasing this gainer from a genuine retailer, the quality is something that will be at par, and in fact, better than most of the weight gainers out there.
Quality Rating: ⭐️⭐️⭐️⭐️

2. Taste

Serious Mass comes in the following flavors:

  1. Banana
  2. Chocolate
  3. Chocolate Peanut Butter
  4. Strawberry
  5. Vanilla
  6. Cookies & Cream

I’ve personally tried their Chocolate and Vanilla flavors, and chocolate would definitely stand out among the two. Looking at reviews of other bloggers and users, Chocolate Peanut Butter seems to be another great flavor.

serious mass

Unfortunately, if you’re looking for an unflavored option, this product may not be suitable for you.
Taste Rating: ⭐️⭐️⭐️

Also, here’s another list I made for the best flavors of different mass gainers.

3. Mixability

While I personally prefer using a blender for mixing my whey protein/protein powder or weight gainer shake, you could also use a shaker. Using a blender makes it easy to mix protein powders with other ingredients like Oats and Peanut Butter, and makes it easy to mix Serious Mass with milk and yogurt.

However, mixing Serious Mass weight gainer with fluids in a shaker cup is inconvenient, and you may still be left with lumps after continuous shaking.

The serving size which is 2 scoops makes it hard to mix with water or milk, and may take a lot of time to dissolve in a way that it becomes drinkable. Since it’s a high calorie weight gainer, it is expected to be like this.

Mixability Rating: ⭐️⭐️⭐️

4. Price/Value for Money

A 12lb tub of Optimum Nutrition Serious Mass would cost you somewhere around $55. While the price seems fair for the weight, there are only 16 servings available in one 12lb pack.

For hard-gainers with a budget constraint, Optimum Nutrition Serious Mass may not be the best option. In this case, a home-made weight gainer might do the trick for you.

Price Rating: ⭐️⭐️⭐️⭐️

5. Effectiveness

This is where Optimum Nutrition Serious Mass leads the pack of weight gainers. Being a high-calorie weight gainer, the quality and ratio in which the nutrients are available makes it a perfect choice for hard-gainers looking to put on healthy weight and for muscle recovery.

Optimum Nutrition Serious Mass Results

With the right nutrition and workout plan, serious mass can easily help you gain anywhere between 1-2lb of of weight per week, or even more, considering that you are maintaining a high calorie surplus.

I’ve tried many gainers in the past, but this supplement remains on the top due to its effectiveness.

The first time I took this product along with a 5-day heavy workout schedule, I was able to gain almost 8 pounds in a month (due to a calorie surplus and better muscle recovery).

While this progress may vary for individuals, keep your workout in check and get adequate rest and you’re bound to see some great results.

Effectiveness Rating: ⭐️⭐️⭐️⭐️⭐️

My Transformation


Benefits of Taking Optimum Nutrition Serious Mass

  1. Calorie Replacement: For hard-gainers and people with a low appetite, consuming over 2500 calories a day might not be feasible. Serious Mass can prove to be a great replacement here, where you can carry it in a shaker on the go. The calories from this gainer contain high protein and carbohydrates, thus helping you gain muscle mass and avoiding excessive fat.
  2. High Protein Content: An average person working out in the gym needs between 1.2-2 grams of protein per kilogram of their bodyweight. A single serving of Optimum Nutrition’s serious mass contains about 50 grams of protein, which makes it a perfect source of protein to be added in the nutrition plan. Using Serious Mass as a post workout drink is highly advisable.
  3. Contains Creatine and Glutamine: Both creatine and glutamine are essential supplements. Creatine causes water retention in your body and helps you push your limits in the gym; while glutamine helps your body recover faster from the intense workout. Since this supplement already contains both Creatine and Glutamine, you would not require them in the form of additional supplements.
  4. Helps Gain Weight: Finally, the only intended purpose of this product is to help you put on healthy weight. Considering you’re actively involved in a physical activity like working out in the gym and keep a check on your nutrition, Serious Mass results will definitely include gaining healthy weight.

Frequently Asked Questions:

What is the best place to buy Serious Mass?

This supplement is widely available on online stores, nutrition stores and several websites that sell health supplements. However, before purchasing, make sure that you’re buying from a genuine source, by either checking the reviews of other people who’ve bought, or carefully checking the details of the store.

Amazon is another great source for purchasing nutritional supplements. Serious Mass is available on Amazon.com for a discounted price of $48.

Can serious Mass make you fat?

A single supplement cannot make you gain or lose weight alone, but a combination of things do. For instance, the amount of fat you will gain during your weight gain journey directly depends on the number of calories you consume, where those calories come from, and what are your activity levels.

If you’re looking to minimize fat gain, try keeping only a 300-500 calorie surplus, ensure that most calories comes from high quality foods, and that you workout with high intensity at least 3-4 days a week.

Does Serious Mass work?

Any fitness goal, be it muscle building or losing weight, does not entirely depend on a single food item or supplement. If a specific product advertises itself as solely helping you achieve a fitness goal, don’t go for it.

Achieving a fitness goal involves keeping a check on your overall caloric needs, workout schedules, rest timings and many other factors.

Same way, in order to gain healthy weight, a single supplement cannot be credited for the whole process. Conclusion? This weight gainer alone isn’t going to help you put on weight alone. While the product itself contains 1,250 calories per serving, you would still need to focus on calorie dense foods in order to reach the requirement.

review of serious mass

Optimum Nutrition Serious Mass Side Effects:

There may not be any serious side effects of nutrition supplements, given that you are a healthy person with no history of kidney/liver diseases.

Even then, this review does not list all possible side effects, and it is best to consult a doctor before taking up a new diet plan or starting with a supplement.

Some side effects may include:

  • Excessive weight gain
  • Nausea
  • Fever
  • Muscle Cramps
  • Diarrhea
  • Stomach Pain

If any of the above symptoms occur, discontinue use and consult with a doctor immediately.

Dead Lift - gaining Tactics

How to Take Serious Mass to Gain Weight / How to Use Serious Mass Weight Gainer?

In order to use Serious Mass to gain weight, take 2 scoops of the mass gainer with 18-24 oz of milk or water, based on your caloric goals. Take this serious mass gainer shake twice a day to get extra calories apart from your usual meals.

The extra calories from the gainer will help you gain weight and build lean muscle.

Final Verdict

Serious Mass weight gainer has a perfect formula to help you put on weight once your diet and workout is on point.

The highest quality, cost effective, lean mass gainer with over 50 grams of protein per serving.
Helps Gain Healthy Weight
High Protein Content
Contains Creatine and Glutamine
Best Calorie Replacement

Now that you’ve gone through the complete Optimum Nutrition’s serious mass review, it is now time to take your fitness goals to the next level. Make sure to consult your doctor before starting this supplement, and discontinue use if you observe any side effects.

Looking to compare gainers vs whey protein? We’ve done the work for you: Mass Gainer vs Whey Protein: A Hardgainer’s choice

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2 thoughts on “Optimum Nutrition Serious Mass Review”

  1. Hi Rohan,

    Good review. I have started working out in gym and would like to know what should I consume in supplements.
    My height is 5 ft 10″ , weight = 62 kgs.
    The ideal weight for this height is about 72-75 kgs.
    I don’t want to look like a body builder but I want to have that fit body.
    Considering 72 kgs is my target, what should I consume ? Whey protein or Serious mass gainer ?
    And I want to do this in like a span of an year.
    I work out on an avg 5 days a week.

    Please suggest.
    Also if you could comment on the taste of other flavors of whatever you recommend, it would be great.

    Thanks in advance,


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