A Fit Muscular man drinking mass gainer supplement in the gym

10 Best Mass Gainers Supplements: The Top List

If you want to gain a lot of mass quickly, no matter if you’re a serious bodybuilder or someone who struggles to gain and maintain weight, then you should choose the right weight gain supplement to help you reach this goal faster. We’re here to help you pick the most effective one, by providing our list of The Top Ten Best Mass Gainer Supplements in the World in the year 2020.

Don’t Want To Read The Entire Top List? Here’s a Comparison Of The Top 2 Best Mass Gainer Supplements:

  Product NameIngredient SafetyProduct EfficacyValue for MoneyTaste 
Transparent Labs ProteinSeries Mass Gainer9910096100Check Out Our #1
Optimum Nutrition Pro Gainer94989999Check Out Our #2

In order to weed out the bad products and only show you the good ones, we base the list on several crucial points. Such as user and critic reviews, our tests and experience with these sports supplements, the reputation and reliability of the manufacturer, as well as documented results from athletes and bodybuilders.

It can be incredibly difficult to pick out a great supplement correctly. One that suits your body’s needs and your personal goals. Especially because the market is flooded with thousands of different products, some of which are outright scams.

We hope after you read our list and our comprehensive guide of Mass Gainer Supplements, you’ll be able to pick just the right product that helps you bulk up rapidly and takes your training results to the next level.

Because here’s the honest truth: A properly chosen supplement will guarantee great results. While a poorly picked one will only hamper your training, waste your precious time and money, or even harm your body. That’s why it’s incredibly important you become as well-informed as you can be before picking the best weight gainer available.

Finally, if you’re a woman and you aren’t very interested in gaining mass but still want amazing results in the gym, be sure to check out the best pre-workout supplements for women as well as the best fat burners for women.

Why You Need Mass Gainers – The Simple Explanation

A Skinny Man Flexing In front of a massive and muscular silhouette

First of all, please don’t confuse weight gain supplements with pure muscle building products like the best BCAA supplements.

While a bulking supplement will help you build muscle mass, it’s not designed for that purpose alone.

Even though all the products we show in our top 10 list are also among the best muscle building supplements available (because they all contain a large amount of protein and BCAAs), their only purpose is to help you bulk up. Which means you’ll be getting both muscle AND fat at the same time.

However, you don’t have to worry about this too much. Because to gain muscle mass quickly and do it in a healthy way, it’s necessary to do it properly and not shy away from fats and calories. Since you can always get ripped later, after you’re happy with the mass you’ve gained.

This is how serious bodybuilders have always done it. And it’s the healthiest way to gain a lot of muscle mass fast.

The benefits of these bulking supplements are many – with the primary one being that you WILL pack on a lot of weight. So if you’re a skinny ectomorph type (someone who has trouble putting and keeping on weight), you should definitely look into this type of product.

Also, since these products often contain vital nutrients, vitamins, and are full of amino acids, you’ll be getting many other indirect benefits as well. Such as superior performance and strength, as well as better endurance and faster muscle recovery.

Finally, if you want to improve your results even further, you can mix other products in. Because adding the best creatine supplement for men as well as the best testosterone booster will improve your gains dramatically. Letting you work out for much longer than you normally would without getting tired.

So without further ado, we present you with our list of the best weight gaining supplements that are currently on the market.

The Top 10 Best Mass Gainer Supplements

 1. Transparent Labs ProteinSeries Mass Gainer

Transparent Labs ProteinSeries Mass Gainer Supplement container front

Transparent Labs ProteinSeries Mass Gainer is currently the cleanest and healthiest mass gainer supplement available. It contains 53 grams of Grass-Fed Whey protein, 109 grams of clean, natural, and slow-digesting carbohydrates, 6 grams of fat – and totals at 750 calories per serving.

The first and most important thing is that the whey protein concentrate contained in this protein powder comes from 100% Grass-Fed sources.

Grass-fed whey is clinically proven to be significantly healthier for you than the grain-fed counterpart. Providing you with many different health benefits, other than just protein supplementation.

The second important thing is that all the carbs this supplement contains come from organic and naturally grown sources. Which are Tapioca, Oat, and Sweet Potato Carbohydrates.

This means there’s no dextrose and similar fast-acting carbs that spike your insulin hormone and screw up your blood sugar levels.

The Full Ingredient List:

  • Protein – 53 g
  • Carbohydrate – 109 g
  • Fat – 12 g

Ingredient Profile Label of Transparent Labs Mass Gainer supplement

The Pros:

  • The healthiest available option
  • Contains Coconut Milk Powder
  • Organic Tapioca, Oat, and Sweet Potato Carbohydrate Sources!
  • 6 grams of cocoa
  • High in Fiber
  • Contains 3g Creatine Monohydrate
  • All-Around Supplement
  • Natural Sugars
  • Great Protein/Carb/Fat Radio
  • Premium Quality Ingredients
  • Trusted and Respected Manufacturer
  • Absolutely Amazing Taste
  • Gras-Fed Whey from New Zealand!
  • No artificial sweeteners, food dyes, or harmful additives

As you can see, you’ll be hard-pressed to find a mass gainer that even remotely contains all of these benefits. And these are just the main ones.

Save 10% Using “FitBody” Coupon! 

There are many more secondary benefits coming from various ingredients in this supplement. For example, 6 grams of pure Cocoa provides you with a large dose of powerful antioxidants. Cocoa in itself is known to lower LDL Cholesterol levels as well as high blood pressure. It also increases blood flow to arteries, reduces chances of blood clots, and even increases cognitive function.

Grass-fed whey has a bunch of benefits in itself, like more vital vitamins and minerals, high Omega-3 content, better absorption, etc. And oats, sweet potatoes as well as Tapioca are carbohydrates that digest slowly, providing a powerful energy source for long periods of time.

The Cons:

  • Medium Sodium and High Cholesterol Content
  • Expensive

Well, you can’t have it all and be the best at everything. One serving of this product contains around 23% Sodium and 37% Cholesterol Daily Value content. So to be on the safe side, don’t take more than is necessary for your goals.

Even though this supplement is an amazing meal replacement, we don’t recommend using it for more than one consecutive meal. That’s because you wouldn’t get your full day’s nutritional vitamin and mineral needs, which is the case with pretty much every mass gainer supplement available.

The supplement is also on the expensive side. But since health is important to us, we believe putting down a few extra dollars in exchange for the healthiest available option in the world is always worth it.

Ingredient Safety:99%

Product Efficacy:100%

Value For Money96%


Currently, this is the cleanest, meanest and best mass gainer supplement in the world, bar none.

The taste is among the best we’ve ever tried: Like a delicious chocolaty smoothie. It’s extremely smooth, not thick, and goes down very easy without upsetting your stomach.

It’s perfect for people who want to build lean mass and pack on a lot of muscle without too much flab.

It’s also the healthiest choice and we can recommend it to anyone who is health-conscious and has the goal of developing a huge and lean physique.


HINT: Use “FitBody” Coupon Code to Get a 10% Discount! 

The only practical downside is the slightly higher price, but you definitely get what you pay for and the benefits are worth every penny.

2. Optimum Nutrition Pro Gainer

Optimum Nutrition Pro Mass Gainer Supplement

Optimum Nutrition Pro Gainer is a high-protein mass gainer with 650 calories per serving that’s widely considered to be the best mass and muscle building supplement in the industry by both critics and users alike.

It’s manufactured by one of the most trusted respected and manufacturers in the entire industry. With many years of experience, millions of happy customers and a huge amount of positive reviews, they know exactly what they’re doing.

The ratio of Protein/Carbs/Fat is also really good. Which means you’ll get more muscle and less fat as a result if you also follow a proper diet and exercise regiment.

That said, there are a few minor flaws with this product.

The Full Ingredient List:

  • Protein – 60 g
  • Carbohydrate – 85 g
  • Fat – 8 g

Ingredient Profile Label of Pro Gainer by Optimum Nutrition

The Pros:

  • All-Around Supplement
  • Lower Cholesterol out of all supplements
  • Low Sugar
  • Great Protein/Carb/Fat Radio
  • High-Quality Ingredients
  • Great Value
  • Trusted and Respected Manufacturer
  • Amazing Taste
  • Great For Beginners and Professionals

With all of these upsides, it’s currently one of the best mass gainer supplements on the planet. The fat content is very healthy and makes it an excellent occasional meal replacement, and not just a weight gain product.

It also contains very little cholesterol, which is a pretty difficult thing to achieve.

The taste is absolutely delicious and resembles a rich smoothie!

But here’s why it’s not on the number one spot.

The Cons:

  • Slightly high sodium content
  • Contains Sucralose and Acesulfame-K
  • Some Stomach Issues

The higher sodium content is not much of an issue.

The biggest disappointment is that the supplement contains Sucralose and Acesulfame-K. Which makes it less healthy than it otherwise could have been.

You see, Sucralose and Acesulfame-K are artificial sweeteners which spike your insulin levels unnecessarily, increasing the risk of diabetes. They’re also linked to heart disease, high blood pressure and other health issues.

Also, as with any best weight gainer product, stomach issues can occur; such as bloating and indigestion. This can’t really be helped in most mass gainer supplements as they are notoriously hard to digest and tend to contain a lot of sodium.

As you can see, if this supplement didn’t contain the two artificial sweeteners and made it easier to digest, it could have been pretty much perfect!

Ingredient Safety:94%

Product Efficacy:98%

Value For Money99%


See The Price for Optimum Nutrition Pro Gainer

This product is incredibly effective at what it does, and we can  recommend it to anyone; beginners and professional athletes alike. As long as you’re not sensitive to Sucralose and Ace-K, that is.

The fact that it’s not overstuffed with vitamins but still contains a decent amount makes sure that serious athletes can add more serving sizes. To get the desired dosage and even better results.

Currently, this is among the best mass gainers in the supplement industry, and the overwhelming majority of positive reviews from industry critics and users completely agree with us.

However, it’s definitely not the healthiest choice. So we hope Optimum Nutrition realizes that putting artificial sweeteners isn’t good and removes them completely.

The price is also quite affordable, so more people can get it easier.

3. True-Mass by BSN

True-Mass by BSN Supplement

True-Mass by BSN is a premium weight gainer with 710 calories per serving.

BSN have been around for quite a while and have a large selection of very useful products. (And some not so useful, as well)

The protein and carbohydrate content is good but it contains quite a bit of fat.

The Full Ingredient List:

  • Protein – 50 g
  • Carbohydrate – 90 g
  • Fat – 17 g

Ingredient Profile Label of BSN True Mass supplement

The Pros:

  • All-Around Product
  • Reputable Manufacturer
  • Low Cholesterol
  • Great Value
  • Perfect Protein/Carb/Fat Ratio
  • Great Ingredient Quality
  • Affordable

This is an all-around product that’s great for beginners and professionals. It’s also very effective for hard-gainers and skinny ectomorphs due to the higher fat content.

The reason it’s ideal for professional bodybuilders who want to maximize their mass is that it is not overstuffed with vitamins. Meaning they can take exactly the dosage they need without any side effects. The only downside to that is that the product becomes more expensive than normal.

The Cons:

  • Bloating
  • Not Great Mix-Ability
  • Some users dislike the taste
  • No Vitamin or Macronutrient Complex

The biggest con is naturally the potential for stomach issues. Unfortunately, according to most mass gainer reviews, this supplement is notorious for causing bloating and indigestion.

The high fat content makes it more difficult to digest quickly. So make sure to leave ample time for digestion if you plan to take it before exercise.

Also, if you’re using this product, you might also want to supplement it with some daily vitamins, to get better results. It’s still a very good mass gainer even with these flaws, but it’s not perfect.

Ingredient Safety:95%

Product Efficacy:99%

Value For Money95%


Take a Look at the Price for BSN True-Mass

Overall, this product is pretty amazing! It’s very effective at what it does and can be used by absolutely anyone who wants to gain weight.

It’s undoubtedly one of the best bulking supplements in today’s market with the little caveat that you might want to supplement it with daily vitamins.

As long as you don’t experience any stomach issues after taking it, then it’s definitely one of the best choices out there.

4. Universal Nutrition Real Gains

Universal Nutrition Real Gains Supplement powder

Universal Nutrition Real Gains is a Muscle Gainer that has 600 calories per serving.

It’s developed by one of the most trusted and longtime manufacturers in the business.

It has a really low fat content and is mostly targeted towards serious athletes and bodybuilders. Like virtually every Universal Nutrition produce, in fact.

The Main Ingredient Ratio:

  • Protein – 52 g
  • Carbohydrate – 87 g
  • Fat – 5 g

The Pros:

  • Low Fat
  • Low Cholesterol
  • Low Sugar
  • Great Protein and Amino Acid Profile
  • Trusted and Reputable Manufacturer
  • Affordable
  • High-Quality Protein
  • Great Taste
  • No Creatine
  • Great Mix-Ability
  • Flaxseed Oil Aids in Digestion

The Cons:

  • Weak Vitamin profile
  • Often Causes Bloating
  • Contains Soy Lecithin
  • Not for hard-gainers or ectomorphs

Even though flaxseed oil aids in digestion, many users are reporting experiencing bloating after taking Real Gains.

Also, Soy Lecithin is mostly safe for the vast majority of people. But many who are sensitive to it can experiece side effects including diarrhea, nausea and abdominal pain.

The other downside is that it’s not for people who are ectomorphs and struggle with gaining muscle mass and weight in general. Due to its structure and macronutrient profile, it’s mostly for bodybuilders who can already pack on weight without any problems.

Ingredient Safety:92%

Product Efficacy:97%

Value For Money94%


See The Price for Universal Nutrition Real Gains

This product comes from one of the most reputable and longtime manufacturers and has been the industry standard when it comes to having real and clean gains. It has always been considered one of the best top rated mass gainer supplements out there.

It also doesn’t overstuff itself with vitamins and other nutrients, meaning that professional bodybuilders can take larger than recommended dosages and get massive gains without experiencing side effects. Other than high chance of bloating, that is.

However, due to its low fat and carb content, it’s not very suitable for skinny ectomorphs and hard-gainers.

5. Dymatize Elite Mass Gainer

Dymatize Elite Mass Gainer Supplement container

Dymatize Elite Mass Gainer is an Anabolic Gainer Supplement with 600 calories per serving.

It contains a good amount of proteins but not a large serving of carbs or fat. Making it difficult for hard-gainers to put on more weight. But they offer a very good solution for this which you’ll see below.

The Main Ingredient Ratio:

  • Protein – 54 g
  • Carbohydrate – 75 g
  • Fat – 7 g

The Pros:

  • Great Taste
  • Good Value
  • Low Sugar
  • Low Cholesterol
  • All-Around Product

This is an all-around product suitable for both beginners and professional bodybuilders because it comes in two options: Elite Mass Gainer with 600 calories and 75 g carbs and Super Mass Gainer with 1300 calories and 238 grams of carbs.

The latter version is perfect for ectomorph type people who struggle with putting on mass.

The Cons:

  • Bloating and other stomach issues
  • Expensive
  • Doesn’t taste good
  • Large Serving Sizes
  • The protein blend is a cheaper quality than 100% Whey Isolate
  • Contains Acesulfame-K – and artificial sweetener

Many users reported experiencing digestion and stomach issues after ingesting this product

That’s pretty unsurprising because of the artificial sweeteners and the fact that the serving size is massive.

Ingredient Safety:88%

Product Efficacy:93%

Value For Money93%


Check The Price for Dymatize Eite Mass Gainer

Overall this is quite an impressive product that does what it promises. It comes in two different varieties; one for beginners and those who want to gain leaner muscle. And the other for professional bodybuilders and hard-gainers.

However, the subpar taste, the protein content and the price should definitely be improved on if it wants to become a very good mass gainer.

So far, the biggest advantage comes from the version of this product that packs 1300 calories per serving and really helps skinny people. The other version is too expensive for what it is so we recommend choosing something else.

6. Serious Mass by Optimum Nutrition

Serious Mass by Optimum Nutrition Supplement

Serious Mass by Optimum Nutrition is a weight gain high-calorie powder that contains 1250 calories per serving.

It packs a massive Carbohydrate punch with a very low fat content – making it a great post-workout as well as recovery shake!

The Main Ingredient Ratio:

  • Protein – 50 g
  • Carbohydrate – 254 g
  • Fat – 4 g

The Pros:

  • Very low fat content
  • No Added Sugar
  • Enhanced with Creatine, Glutamine, and Glutamic Acid
  • Great Vitamin and Essential Mineral content
  • Great Taste
  • Very Easy to Drink

Adding Glutamine, Creatine and Glutamic Acid is a wonderful choice for water retention, recovery and better performance. As well as weight gain.

However, the low fat content makes it not very suitable for people who have a lot of trouble putting on weight.

The Cons:

  • Weak Protein to Carbs ratio
  • High chance of bloating
  • Bad Carb Composition
  • Huge Serving Sizes (334g)
  • Huge Insulin Spike

It’s not really suitable as a meal replacement because the fat content is too low for that.

But the biggest problem with this supplement is that all the carbs come from Maltodextrin. While it is a much better carb than say Dextrose, it is still not the ideal version. Because a more complex carb would have been much better to keep blood sugar levels low. That’s what most of the best mass gainers do to make weight gain healtier and more natural.

We also suspect the carb content is a little bit overkill and narrows down the number of people who can make great use of this product.

Ingredient Safety:85%

Product Efficacy:88%

Value For Money94%


Check The Price for ON Serious Mass Gainer

While it is indeed perfect for serious bodybuilders, who want to pack on a ton of muscle and need a lot of carbs. But the protein content and the carb composition could have been much better.

That’s why we only recommend it for professional athletes and serious weightlifters who don’t mind so much Maltodextrin.

Also, the full 25 Vitamin and Essential Mineral profile is very impressive! It’s one of the more notable parts of the blend.

7. Nature’s Best Isopure Mass

Nature’s Best Isopure Mass Gainer Supplement

Nature’s Best Isopure Mass is a bulking powder with 600 calories per serving.

This manufacturer is relatively new in the industry. They haven’t yet gathered a lot of reviews or gained a huge reputation but they’re getting there.

Most of the macronutrient profile is decent but there’s not much fat. Which isn’t ideal for ectomorphs.

The Main Ingredient Ratio:

  • Protein – 53 g
  • Carbohydrate – 86 g
  • Fat – 5 g

The Pros:

  • Low Fat Content
  • Great Vitamin and Nutrient Profile
  • Affordable
  • Great for Pre and Post Workout
  • Not Overwhelming
  • Great for Beginners and Advanced gym-goers
  • Great Taste

The Cons:

  • Not for hard gainers
  • Not for huge gains
  • Claims to be lactose-free but causes problems for people with lactose intolerance
  • Doesn’t blend well
  • Irritates Stomach

A lot of reviewers who are lactose intolerant reported that they have severe problems similar to when ingesting milk/ice-cream when taking it.

A decent number of regular users reported that it irritates their stomach.

It’s also not for people who struggle with weight gain.

Ingredient Safety:89%

Product Efficacy:83%

Value For Money91%


See The Price for Isopure Mass

While this product is definitely effective and we do recommend it for beginners and advanced gym-goers. We can’t recommend it for serious bodybuilders who want to gain serious mass and for hard-gainers or ectomorphs.

Also, we don’t recommend this to anyone with any stomach or digestion issues, as well as those who can’t tolerate lactose.

All in all it’s still a pretty good choice. But if it wants to be the best mass gainer around, it still has some issues to fix.

8. Muscletech Mass Tech Powder

Muscletech Mass Tech Powder Supplement container

Muscletech Mass Tech Powder is a dietary supplement that has 1010 calories per serving.

Muscletech is a very respected brand in the industry and they’ve been around for a long time.

Due to the macronutrient profile it’s really good for hardcore bodybuilders.

The Main Ingredient Ratio:

  • Protein – 63 g
  • Carbohydrate – 168 g
  • Fat – 9 g

The Pros:

  • Low Fat
  • Great Carbohydrate Complex
  • Great Taste
  • Affordable

The Cons:

  • Artificial Sweeteners and other unnecessary additives
  • Bad Mix-Ability
  • Way too much creatine at 10g per serving, which can cause side effects for some people.

The biggest con is a surprising 10 grams of Creatine. Which makes this product not very suitable for beginners.

Another problem is the inclusion of artificial sweeteners, which is never a good choice.

Ingredient Safety:66%

Product Efficacy:86%

Value For Money89%


Check Price for Muscletech Mass Tech Powder

While the product is otherwise amazing and really good for serious bodybuilders, we’re surprised to see an unnecessary 10 grams of Creatine that it contains.

For most beginners and average gym-goers, it’s way too much creatine by any standards for a single serving. Especially if you want to use it regularly or as meal replacements. So we can only recommend this product to people who are not sensitive to creatine or those who specifically want so much and train really hard nearly every day.

Other than that, it’s pretty affordable and tastes great!

9. MHP Up Your Mass

MHP Up Your Mass Supplement container

MHP Up Your Mass is a weight gainer supplement with 800 calories per serving.

The manufacturer is not well-known and has yet to prove themselves in the industry.

The macronutrient profile is a little bit off because there’s too much fat.

The Main Ingredient Ratio:

  • Protein – 62 g
  • Carbohydrate – 80 g
  • Fat – 27 g

The Pros:

  • Good Protein Blend
  • Great Vitamin and Nutrient Content
  • Affordable

The Cons:

  • Bad taste
  • Not for serious bodybuilders
  • Contains Soy
  • Too much Fat

One of the cons is the inclusion of soy, which isn’t ideal for bodybuilders due to the estrogen content. Which means you shouldn’t be taking huge servings of this product. So it’s not very suitable for advanced weightlifters who need a huge macronutrient intake.

It also contains way too much fat for the macronutrient profile. That can help hard-gainers but makes it pretty difficult to digest.

Ingredient Safety:86%

Product Efficacy:81%

Value For Money87%


See the Price for MHP Up Your Mass

This one’s a decent weight gainer for men as well because it delivers what it promises and does so at a very affordable price.

However, it contains way too much fat, and still fails to grab the attention of serious bodybuilders who need more calories.

The taste is also consistently rated as awful, by most users.

10. Monster Mass by CytoSport

Monster Milk Mass Gainer by CytoSport Supplement

Monster Milk by CytoSport is a bulking supplement that packs 600 calories per serving.

The macronutrient profile is a little bit on the low side, which makes this muscle building supplement more suitable for beginners than dedicated bodybuilders and weightlifters.

The manufacturer is a little bit obscure as well and are yet to prove themselves in the eyes of the public.

The Main Ingredient Ratio:

  • Protein – 50 g
  • Carbohydrate – 76 g
  • Fat – 12 g

The Pros:

  • Good for beginners
  • Not overwhelming
  • Provides steady energy
  • Great Taste

The Cons:

  • Not for serious bodybuilders
  • Not for serious gains
  • Not a very pure protein blend

Ingredient Safety:89%

Product Efficacy:69%

Value For Money85%


This weight gainer shake is a decent product to start off with for beginners and those who don’t want to bulk up too much.

However, for more serious athletes who want a bigget punch of their daily macros, we recommend other options.

Respect the Dosage Instructions and Don’t Abuse Them

It’s always a good idea to carefully read the manufacturer’s label of any sports supplement product before you use it.

The recommended dosage is there for a reason. So unless you’re a very experienced and serious athlete, please respect the dosage of your chosen mass gainer.

Also, don’t think that you need to ingest as much protein as possible as quickly as you can. Because ingesting more than 60 grams of protein at once can have a negative effect on you and your body if you aren’t exercising like crazy pretty much every day. So if you’re starting out, don’t overdo it and don’t take more than you need.

Additionally, as with most dietary supplements, we don’t recommend using them for a very long time. Because they’re not a substitute for a proper and healthy diet. Do not use them longer than two months unless you’re a professional athlete or have discussed it with a doctor.

Finally, here are some other relevant top lists: 

The Best Stimulant-Free Pre Workouts

The Best Post Workout Supplements

The Best Tasting Protein Powders

The Best Pre Workout Supplements for Men

The Best Protein Powders for Women


We hope this article helps you pick out the mass gainer that suits you and your needs the most, out of the hundreds of different ones available on the market.

Don’t forget that no supplement is a magic pill! You still have to put in the necessary effort and have an effective training program. As well as a healthy and nutritious diet.

If you pick your product correctly and use it properly, we guarantee you’ll get great results.

And now it’s your turn to share your ideas with us! Do you have any interesting thoughts or ideas regarding high-calorie mass gainer supplements? Let us know in the comment section below!

Eat Right, Train Hard and Get Huge Gains!