Top 5 Best Mass Gainer Supplements For Weight & Size

Jan 29, 2021 at 6:02 am
Gaining new muscle mass is a process that could take a while. It requires your body to have adequate training but, most importantly, enough nutrients like protein and carbohydrates.

Eating enough nutrients can be quite challenging, and that's why people like to use mass gainer supplements. Mass gainers contain enough protein, carbohydrates, and sometimes essential vitamins to fuel your body.

Some people need to consume more calories than other people to be able to gain muscle mass. A mass gainer is easy to take as a shake, which makes it convenient to carry to your work or gym. These supplements are also called weight gainers because they could help you gain weight fast.

Top 5 Mass Gainers For Weight
In this article, we will reveal the best mass gainer supplements of 2021. The following weight gainers have been carefully selected by quality, nutrients, effects, and price.

To sum it up:

  1. Transparent Labs Mass Gainer – click to check price
  2. Naked Mass – click to check price
  3. Optimum Nutrition Serious Mass – click to check price
  4. Dymatize Super Mass Gainer – click to check price
  5. BSN True Mass – click to check price

Below you will find the individual review on each product and why they've been selected on this list.

#1 Transparent Labs Mass Gainer

The ProteinSeries Mass Gainer from Transparent Labs contains a stunning 53grams of protein and 109 grams of carbohydrates per serving, which makes it the mass gainer with the highest amount of protein. The protein comes from Grass-Fed whey protein clean of artificial sweeteners, gluten, and preservatives. The great thing about this mass gainer is that it has carb sources from oats and sweet potatoes, making it a healthier product than others.

  • Natural & Pure Ingredients
  • Stunning 53 grams protein per serving
  • Healthy Carb Sources
  • Added Creatine
  • No Artificial Sweeteners
  • Gluten-Free

Supplement Facts
  • One(1) serving has 790 calories.
  • Protein: 53grams
  • Fat: 14grams
  • Carbohydrate: 114grams
  • Creatine: 3 grams

To Conclude
It doesn't get much better than the Mass Gainer from Transparent labs. It contains all the nutrients you need with an extra 790 calories per serving to your diet.

It also contains creatine monohydrate for added strength and performance to your workout. With 15 servings per container, you also get more than other brands.

Try Transparent Labs Mass Gainer Today (CLICK HERE)

#2 Naked Mass

Naked Mass only contains three key ingredients, but they are all of exceptionally high quality, and practically all you need in a mass gainer.

They combined whey, casein, and organic maltodextrin in one product making it very easy but efficient. One serving contains four scoop with a remarkable total of 1250 calories, 50grams of protein, and 252 grams of carbs.

Naked Mass only contains 2,5 grams fat, so this is perfect for people that are looking for a low-fat mass gainer. The combination of whey protein and casein results in fast and slow-acting proteins, so your body has enough nutrients to build new muscle mass the whole day.


- Slow & Fast Acting Proteins

- 1250 Calories Per Serving

- 6 Delicious Flavors

- Organic Maltodextrin For Fast Acting Carbs

- No Artificial Sweeteners or Additives

Supplement Facts
One(1) serving has 1250 calories.

Protein: 50grams
Fat: 2,5grams
Carbohydrate: 252grams

To Conclude
Naked Mass is a perfect supplement to add to your daily routine. They made sure to only add the best ingredients to this mass gainer. It's perfect for people who are having a hard time putting on muscle mass since it contains 50% of the daily recommended calories for men.

Try Naked Mass Today (CLICK HERE)

#3 Optimum Nutrition Serious Mass

Serious Mass by Optimum Nutrition is probably the most known mass gainer on the market. Just like Naked Mass, it has 1250 calories per serving with 50 grams of protein. Serious Mass also ensured that you get all your vitamins and minerals since they added 25 different vitamins per serving. Another great benefit of this mass gainer is that it contains 3 grams of creatine per serving. Creatine is known for improving performance in the gym by helping with strength and endurance. Their protein sources include whey, casein, and egg whites.


- 1250 Calories Per Serving

- 6 Flavors & 2 Sizes To Choose From

- 3grams Creatine Added

- Vitamin & Mineral Blend

- No Artificial Sweeteners

- Gluten-Free

Supplement Facts
One(1) serving has 1250 calories.
Protein: 50grams
Fat: 4,5grams
Carbohydrate: 252grams

Creatine: 3 grams

To Conclude
Serious Mass is a complete mass gainer that is unique on its own. It will most definitely help you with increasing muscle mass and recover faster after your workouts.

It's different from all the others since they included necessary vitamins, so you're able to push yourself to the limit.

Try Optimum Nutrition Serious Mass Today (CLICK HERE)

#4 Dymatize Super Mass Gainer

Dymatize is the mass gainer with the highest calories on this list. It contains an extraordinary 1310 calories per serving. More calories don't necessarily mean it's better, but it sure is remarkable.

Dymatize super mass gainer is created to give you the best possible macros per scoop to gain strength and mass. 10,7 grams of BCAA's at the ratio 2:1:1 has been added with 5,1 grams of L-Leucine. We know that L-Leucine has been demonstrated to increase protein synthesis, helping you build muscle(1).

  • 1310 Calories Per Serving Making It The Highest Of This List
  • 52grams protein with just 10grams fat
  • 10,7grams BCAA's
  • Vitamin Blend Included
  • Supports Muscle Recovery

Supplement Facts
One(1) serving has 1310 calories.
Protein: 52grams
Fat: 10grams
Carbohydrate: 252grams

To Conclude
Dymatize super mass gainer stands out from the rest because it has the most calories per serving and 10,7grams of BCAA. However, one tub of Dymatize only contains eight(8) servings making it a costly choice, and therefore, we would advise using the Mass Gainer by Transparent Labs.

Try Dymatize Super Mass Gainer Today (CLICK HERE)

#5 BSN True Mass

BSN True-Mass makes our top 5 mass gainers complete. It's a product we couldn't let out because it's so popular. We've looked at the reviews, and they all seem to be optimistic about the ingredients and taste.

While it isn't the most stacked mass gainer, it is genuinely a good blend with an extra 10 grams of BCAA for muscle recovery and protein synthesis.


  • Premium Carbohydrate & Protein Blend
  • 10grams BCAA's Added
  • Builds Mass & Strength
  • Enhance Muscle Recovery
  • 700 calories with 46grams of protein

Supplement Facts
One(1)serving has 700 calories.
Protein: 46grams
Fat: 18grams
Carbohydrate: 87grams

To Conclude
It's a reliable product, but it's not the most complete and therefore placed at the last spot. While Transparent Labs Mass Gainer and Naked Mass both don't use artificial flavors, True Mass uses several of them. It's also the mass gainer with the least carbohydrates but with the most fats.

Try BSN True Mass Today (CLICK HERE)

How To Use A Mass Gainer

A mass gainer is used as a supplement that complements your daily nutrients needed to build muscle. You can use it as either a meal replacement shake or use before or after your workout. This will help you improve protein synthesis and recovery.

You can take a mass gainer at any time of the day. Most experienced users take them right before or after their workout to fuel their muscles for the training. However, if you would like to take it in the morning, at lunch or in the evening, that will be fine as well.

Mass gainers contain almost all nutrients your body needs to build muscle, and all in just one shake, making it very convenient to take along to your work or gym session.

All products in this article come in a powdery form. You need to mix the contents with either water or milk. Please check the directions on the product itself for optimal mixability.

When do you need a mass gainer?

If you're someone with a hard time putting on size, a mass gainer can be a perfect solution. One serving could include up to 1300 calories, which is already 50% of the average daily calories needed for males(2).

People who have a very high metabolism or heavy physical work need to consume more calories than someone with a sedentary profession. If you're on the road all day, taking a shake with an extra 1200 calories is very useful.

It's perfect for people looking for a supplement to help them reach their daily calories faster and in a more timely way.

Mass gainers should not be used by people that already reach their daily macro goals by regular food.

click to enlarge Top 5 Best Mass Gainer Supplements For Weight & Size
Pixel-Shot / Shutterstock

Mass Gainer Side Effects

Mass Gainers are generally considered safe since most of them only contain carbohydrates, protein sources, and vitamins. However, if you're someone with lactose or gluten intolerance, you should read the label and contact your health professional before using it. This also counts for people with allergies. We know that Transparent Labs Mass Gainer is Gluten Free and Non-GMO.

Some users have noted the following side effects:

  • Upset Stomach
  • Diarrhea
  • Bloating
  • Insulin spiking

The largest cause of these side-effects is related to the high amount of carbohydrates in these supplements. Some carb sources like dextrose or maltodextrin are known as fast-acting carbohydrates and could induce stomach upset and insulin spiking.

If you have diabetes, you should keep in mind that most mass gainers will cause enormous insulin spiking. Consider talking to a dietitian or health professional regarding the use of mass gainers.

Do Mass Gainers Make You Fat?
To answer this question in short: No, they do not make you fat. But mass gainers contain a high amount of calories, which could lead to excess calories. Consuming more calories than your body needs will result in your body, storing those calories as fat.

When you're using a mass gainer, we advise you to start tracking your calories, so you know exactly how much you put into your body. Unsure how many calories you need daily? Please use the following macro calculator.

Final Word

Mass gainers are very heady when it comes down to building muscle or increasing strength. These supplements can help you with improving your overall performance and hit your macro's goals.

We've put this list together based on our own experience but mainly on ingredients, taste, effectiveness, and price. With this guide on mass gainers, you can easily find a solid and effective weight gainer that fits your needs.

If you're unsure if you can use a mass gainer, please contact a dietitian or your health caretaker.