Best Protein Powder For Skinny Guys: 5 Picks For Bulking

When you first go to a commercial gym, you would see the front desk full of what-so-called supplements. And whenever you talk about your goals of having big muscles, everybody tells you that you should take a supplement, right?

Today, we are going to talk about the best protein powder for skinny guys.

Protein powders are health supplements that come in different types and kinds of whey, beef, soy, and vegan. The idea of the invention was to make it easier for the user to get the benefits from food, but in an easy and fast way.

Most people struggle to build muscle and gain weight with only food. That’s because they are required to eat a lot, which many people can’t.

Imagine that it is hard for normal people to gain weight because of the tremendous amount of food they need to eat, so what about skinny ones? Skinny guys often have a fast metabolism.

To understand what is the metabolism, imagine that your body is a car, the food you eat is the fuel, and your metabolism is the motor. When you have a fast metabolism, you burn food faster and it makes it harder for you to gain weight.

Protein powders are a good choice for someone that is working out and wants to build muscle and get enough protein intake but for someone that is skinny, protein powder(lactose free or otherwise) won’t offer enough when it comes to gaining weight and breaking the skinny plateau.

The skinny plateau could be caused by genetics, by other means, being a hard gainer. Also, it could be caused by not eating enough and thinking you are getting enough calories.

Best Protein Powder For Skinny Guys: 5 Top Picks

1. Optimum Nutrition Serious Mass Weight Gainer

Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vitamin C, Zinc and Vitamin D for Immune Support, Chocolate, 12 Pound (Packaging May Vary)

Serious Mass of ON supplement company is by far the most popular and the most bought mass gainer on the planet. It is recommended by almost every professional bodybuilder and if you are deep into the fitness industry, you would know that almost everybody took this supplement and nobody regrets it.

Optimum Nutrition Serious Mass product provides you with a solid 50g of protein that will help you build muscle and recover to a great degree. What is so good about it that it offers a blend of protein that consists of fast-digested proteins and slow-digested proteins that benefits your muscles to an even bigger degree.

It also offers 1250kcals per serving and 252 grams of carbohydrates. For skinny guys, serious mass is simply the best because of the great caloric density it has. 1250kcals will let you gain muscles and gain weight easily when combined with simple nutrition. Moreover, this large amount of carbohydrates will replenish your glycogen stores and provide you with the energy needed to workout.

For better results, Optimum Nutrition loaded its mass gainer with 3 grams of creatine which helps in muscle gaining and increase strength and performance. Also, it loaded the product with glutamine and more than 25 vitamins to ensure enough micronutrient content and improve immunity.


  • Great protein blend
  • Creatine and vitamins
  • Low fat content


  • Lots of sugar and cheap carbohydrate source

Who it’s good for

The Optimum Nutrition Serious Mass is a good option for someone that wants to gain weight and for someone that is skinny. It is good for you if you want a supplement that includes creatine and vitamins along with it so you save money by not buying these other supplements.

Who it’s bad for

This mass gainer is not good for someone that does not want a cheap source of carbohydrates and does not like sugars and High-GI carbohydrates which spike insulin. As it is clearly not good for someone with diabetes.

2. BSN TRUE-MASS Weight Gainer

BSN TRUE-MASS Weight Gainer, Muscle Mass Gainer Protein Powder, Chocolate Milkshake, 10.38 Pound

BSN TRUE-MASS Weight Gainer is a product that we love simply because it has high-quality ingredients that ensure better health and guaranteed results. BSN is a popular manufacturer of sports supplements and has a good rep in the fitness industry.

The True-Mass gainer comes at 1230 calories per serving providing a similar amount of calories to the Serious Mass. This great amount of calories will help you gain weight effectively and easily, without worrying about eating much food.

It also has 50 grams of protein, of a high-quality blend including whey protein concentrate, isolate, egg whites, hydrolyzed whey protein. This protein blend ensures that your muscles get different sources of protein with different rates of digestion so it can be fed on different timing levels.

It has 222 grams of carbohydrates, near to ON serious mass. However, the BSN True-Mass weight gainer manufactured its carbohydrates from rolled oats, a great source of complex carbohydrates that is healthy and nutritious. It is a healthier choice because it uses rolled oats instead of a cheap carbohydrate source such as maltodextrin or sugar.

However, a big downside of this product that it has no creatine or any added vitamins. By that being said, you will need to get these by buying individual supplements.


  • Great Taste
  • Rolled oats as the main carbohydrate source
  • Great protein blend


  • More fat than Serious Mass

Who it’s good for

The BSN True Mass is a great option as a mass gainer for people that want to gain weight and stay healthy.

It might be a good idea for you if you prefer high-quality carbohydrates over sugar and maltodextrin as the company manufactured it with rolled oats as the main carb source. Also, it is good for you if you tried other mass gainers and experienced bad flavor and taste.

Who it’s bad for

As it is nearly good for anyone, it might be a bad idea to buy the true mass if you don’t want a high fat intake from it that might get you full quickly.

3. MuscleTech Mass-Tech Weight Gainer

Mass Gainer Protein Powder | MuscleTech Mass-Tech Elite Mass Gainer | Whey Protein Powder + Muscle Builder | Weight Gainer | Protein Powder for Muscle Gain | Creatine Supplements | Chocolate, 7 lbs

MuscleTech is a company that is known to produce the highest-quality health supplements on the market. With the good old CellTech, it is from the most famous and the most respected supplement companies ever.

The Mass-Tech Weight Gainer provides the user with 820 calories of high-quality ingredients, not just maltodextrin and sugar, which ensures a good micronutrient profile and better health in general. Also, this amount of calories will let you gain lean muscle mass , unlike other mass gainers that are packed with calories that will let you gain fat along with the muscle.

The MuscleTech mass gainer provides 62 grams of high-quality protein that is a blend of whey protein concentrate, whey protein isolate, hydrolyzed whey protein, and milk protein. This blend ensures that your muscles get protein at different timing and your body digests these proteins gradually so your muscles get protein for prolonged times.

It has 132 grams of carbohydrates that come from complex and good sources of carbohydrates such as oat bran, quinoa, and buckwheat. This ensures that there are no cheap sources of carbohydrates included or there is no added useless sugar. It only has 9 grams of sugar added per serving, which is the minimal on the list till now.

The product has 10 grams of creatine per serving! 10 grams of creatine is a great amount that will replenish your phosphocreatine stores faster allowing it to boost your performance and increase your energy and muscle mass


  • Great sources of carbohydrates
  • Great blend of protein
  • 10 grams of creatine


  • Too much artificial sweeteners and gums

Who it’s good for

The MuscleTech Mass gainer is good for someone that wants a mass gainer supplement to gain lean muscle mass without excess fat gain. It is good for skinny guys that want to get stronger and bigger while training because of the high creatine content.

Who it’s bad for

This mass gainer is bad for someone that does not like super sweet taste. As it uses artificial sweeteners plus gums that make it very sweet in taste. Consider looking for other options.

4. Naked Mass – Natural Weight Gainer

Naked Mass - Natural Weight Gainer Protein Powder - 8lb Bulk, GMO Free, Gluten Free & Soy Free. No Artificial Ingredients - 1,250 Calories - 11 Servings

The Naked Mass Gainer is a weight gainer that competes with other mass gainers to be the healthiest and the most natural protein supplement on the market. As a result, it is somehow expensive. Health comes at a cost, right?

Naked Mass Natural Weight Gainer provides you with 1250 calories of high-quality macronutrients and ingredients, which will help you gain the weight you desire and improve your fitness journey and make it easier for you. It has 50 grams of Naked protein which is a grass-fed whey protein concentrate of the highest-qualities on the market.

It has 252 grams of carbohydrates just as the ON serious mass. However, instead of using a cheap carbohydrate source of High-GI and low health benefits, they used an organic tapioca maltodextrin that is a complex source of carbohydrates as well as Low-GI.

The Naked Mass Weight Gainer does not include any added artificial sweetener, colors, or any artificial sweeteners. It uses organic cacao as the flavor and organic coconut sugar as the sweetener. So do not worry about artificial ingredients.


  • No artificial sweetener
  • Great carbohydrate source
  • High-quality grass-fed whey protein


  • Expensive

Who it’s good for

The Naked Mass Gainer is good for anyone that prefers natural ingredients and does not like artificial sweeteners and GMO products. It is good for anyone that wants a Low-GI complex carbohydrate source and high-quality protein.

Who it’s bad for

This mass gainer is not the ideal choice for someone that has a tight budget and does not want to invest much in a mass gainer.

5. Muscle Milk Gainer

Muscle Milk Gainer Protein Powder, Vanilla Creme, 32g Protein, 5 Pound

Muscle Milk is known for its high-quality protein shakes and supplements. It has made this mass gainer for the skinny guys that want to increase lean muscle mass without any fat gain.

The Muscle Milk Gainer is one of the best to gain weight because of its low calorie density and great macro split. It has 650 calories of high-quality ingredients which ensures gaining lean muscle mass with no excess fat gain. This mass gainer comes with 32 grams of protein which is kind of low when compared to other mass gainers, but when compared to the caloric density, it sits fine.

It has 110 grams of carbs which comes of maltodextrin, a cheap carbohydrate source. And that’s the only disadvantage of this product. What is so good about this mass gainer along with serious mass is the chain of vitamins it has. It has many added vitamins that make it a mass gainer and a multivitamin combined.


  • Great taste
  • Added Vitamins
  • Great protein blend


  • Maltodextrin
  • Low protein when compared to other mass gainers

Who it’s good for

The Muscle Milk Mass Gainer is good for anyone that is looking for a mass gainer that helps in gaining lean muscle mass without any excess fat, due to the low caloric density. Also, it is good for you if you want added vitamins and does not want to invest in any other multivitamin along with the mass gainer itself. Moreover, if you experienced a bad taste of mass gainers, this mass gainer will change your mind.

Who it’s bad for

This mass gainer is not good for you if you are looking for a higher protein quantity per serving. Also, it is not good for you if you are looking for a good carbohydrate source that is Low-GI and does not spike insulin.


What is a mass gainer?

A mass gainer is a type of protein powders that provides “mass”. It was invented mainly to provide enough calories to the skinny guys or people who want to gain weight but they reached the plateau.

Basically, a mass gainer is a simple protein powder with added carbohydrates. You will notice that carbohydrates make up the most of mass gainers. That’s because it is needed to be packed with many calories to it can be beneficial for weight gaining.

Mass gainers can differ in the caloric density by a great range. Some mass gainers come at 500kcals per serving, while others come at 2000kcals per serving. Ideally, you would choose the caloric density depending on your weight level.

If you too skinny and don’t mind some gains of fat, you would choose the 2000kcals range mass gainers. If you want to gain lean muscle without any fat gain or just a little, you should lean on the 500kcals range mass gainers.

Mass gainers main idea is to provide enough calories. Meaning that it should contain a high macronutrient profile. Typically you would most mass gainers have 50 grams of protein per serving while they have 200 to 300 grams of carbohydrates!

You may wonder why mass gainers contain all of these carbohydrates in just one serving. Carbohydrates make up most of the caloric density of a mass gainer, because you need many calories to gain weight, mass gainers provide that.

Mass gainers differ in the quality of production greatly. Some companies might produce mass gainers with a lot of sugars and cheap carbohydrates, while others can produce them with high-quality complex carbohydrates.

Ideally, you would choose the complex carbs over the sugar. It’s the same way with the protein. Some can use low-quality protein while others use high-quality. For best results, you would for a mass gainer that has whey protein isolate or has a blend of proteins.

Why should I take a mass gainer?

No doubt, mass gainers are very beneficial when it comes to the need for mass. Mass gainers can be very beneficial for skinny guys and people who want to gain muscle or gain weight overall. Being skinny could be a problem for some people. It can cause anemia, lack of self-esteem, and many other mental problems if this person takes it that way. However, there is no shame in weight.

Mass gainers help you gain weight

Because mass gainers are called weight gainers, they help the user gain weight faster than anything. Instead of eating 2 kilograms of food daily, you would simply replace a big meal with a serving of mass gainer whatever the type of calories, and it would be a great replacement.

To gain weight, you need a lot of calories depending on your weight, age, height, and activity. Some people need a lot of calories to gain weight that they could not get it from food alone. Here comes the mass gainer’s job.

Mass gainers will provide you with a lot of calories to make up your caloric needs so you can gain weight effectively, easier and faster.

Mass gainers provide a great protein and carbohydrate source

To build muscle, you need protein and this is a basic 10th-grade biology. Mass gainers provide you with a decent amount of protein which will range from 30 to 60 grams of protein per serving.

Because not everyone has the ability to eat much chicken or meat, mass gainers provide the benefit of them which is protein, in a tasty and easy way.

Also, mass gainers provide your body with a large amount of carbohydrates, a crucial macronutrient that boosts your performance at the gym and helps you gain weight.

Mass gainers will help you replenish glycogen stores which consist of carbohydrates because mass gainers have a large amount of carbohydrates in each serving. Also, mass gainers will provide you enough energy so you can perform at the gym or perform at any sport the user practices.

When to use this protein powder?

Using a mass gainer really depends on the person and what is his/her preferences. The general rule of thumb is to take any protein powder including mass gainers post-workout.

Because after the workout your body needs protein to start recovery and builds muscle as well as carbohydrates to replenish glycogen stores and get ready to start recovery too.

However, mass gainers can be used as meal replacements. For instance, you are in a hurry and do not have time to prep a meal, just take your mass gainer, and so on.

Because mass gainers are considered a complete meal full of macronutrients and micronutrients, you can take it first thing in the morning as a breakfast to it provides your body with energy to complete the day.

Understanding the supplements

The supplements, whether its protein powder, multivitamins, omega-3, should only supplement your meal plan or nutrition plan. The supplements are not mandatory, making it essential more than your actual diet is very bad.

Supplements are made to supplement your diet if it lacks something. The truth is, many people do not need any supplements and gain muscle and lose fat with no problem.


In Conclusion, Protein powders and mass gainers are quite beneficial for different people and different purposes. For skinny guys, the best choice is a mass gainer to help them achieve their caloric needs and gain weight easily and effectively.

We have listed the best and the highest-qualities mass gainers available on the market ranging from lean gainers to extreme gainers. You would expect to find 600 to 1400 calories mass gainers in this list. If you are skinny and looking forward to gaining weight, this post is for you.

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