The 10 Best Mass Gainers on the Market in 2019

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Everyone has their own goals when it comes to fitness.

Some are looking to lose weight, some want to tone up and build lean muscle, and some want to pack on as much muscle as possible.

If you’re in the last category, and looking to add significant muscle mass to your body, you’ve come to the right place!

This is our list of the best mass gainers on the market.

These 10 mass gainer brands have been ranked because they dominate the e-commerce sales charts, fitness bloggers love them and they have the highest user reviews online.

Top 10 Weight Gainers Compared

Heads up, there are affiliate links in this article, so if you buy something, we get a cut of the sale.

1. Optimum Nutrition Pro Gainer

Optimum Nutrition Pro Gainer Overview

Pro Gainer is the one of the best weight gainer supplements available today. Loaded with 60g of protein, 85g carbohydrates and 24 vitamins and minerals, Pro Gainer is the perfect post-workout for those looking for mass, or as a simple weight gain powder to use between meals.


  • 60g high quality protein per serving
  • 85g carbohydrates
  • 24 different vitamins and minerals
  • 4g dietary fiber
  • 650 calories
  • Small serving size compared to many similar products
  • Made by Optimum Nutrition, one of the best brands in the business
  • Easy and convenient – does not require a blender (use a BlenderBottle for easier mixing)
  • Available in 3 flavors

Who makes it: Pro Gainer is made by Optimum Nutrition, one of the biggest names in the sports nutrition industry. Since 1987, Optimum Nutrition, or ON for short, has been a leader in developing highly innovative, affordable, and effective products. In their 25+ years in the industry, ON has received many prestigious awards, and has developed a reputation for producing some of the most high-quality product lines available.

Bottom Line: Optimum Nutrition Pro Gainer is one of the best mass builders money can buy. It provides everything your body needs to gain mass, and none of the unnecessary junk. Pro Gainer is a simple, clean, effective weight gain supplement.

Full Breakdown: Optimum Nutrition Pro Gainer Review

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Where to Buy ON Pro Gainer

2. Transparent Labs ProteinSeries MASS GAINER


Transparent Labs MASS GAINER is one of the highest quality mass gainers currently on the market. Loaded with 53 grams of 100% Grass-Fed New Zealand Whey Protein Concentrate (WPC80), 109 Grams of carbs sourced from organic tapioca maltodextrin, 6 Grams of Healthy Fats, and 3 grams Creatine Monohydrate – MASS GAINER delivers massive value that complements its price.


  • 750 Calories Per Serving
  • 53 Grams 100% Grass-Fed New Zealand Whey Protein Concentrate
  • 100 Grams Carbohydrates from Organic Tapioca Maltodextrin (100 g)
  • Nearly 6 grams MCTs
  • 3 Grams Creatine Monohydrate
  • 8 Grams of Fiber
  • Naturally Sweetened with Stevia & Monk Fruit
  • Full Ingredient Transparency
  • Health Conscious Mass Gainer

Who Makes It: MASS GAINER is made by Transparent Labs, the fastest growing new supplement company founded in 2015. Transparent Labs is known for their premium and effective workout supplements like PreSeries BULK, LEAN, STIM-FREE, BCAA Glutamine, and Creatine HMB – All pf which provide full clinical doses and 100% label transparency.

Bottom Line: MASS GAINER by Transparent Labs uses only high quality ingredients, and provides full label transparency. The use of premium ingredients does create the need for a price slightly higher than the market norm, but we’re confident that MASS GAINER may help you in your weight gain journey, for only a few dollars more.

Full Breakdown: ProteinSeries Mass Gainer Review

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Where to Buy ProteinSeries MASS GAINER

3. MuscleTech MASS-TECH

Muscletech Mass Tech

MASS-TECH is a mass gainer supplement from MuscleTech, a leader in the sports fitness industry. It’s designed specifically for “hardgainers” who struggle to put on muscle mass. It’s loaded with protein, carbs, BCAAs, creatine, and more, and provides an easy way to get a ton of nutrition in a single shake.


  • 63g protein per serving
  • 132g carbs
  • 13g BCAAs
  • 10g creatine
  • 840 calories per serving
  • Designed for hardgainers
  • Added enzyme digestion complex
  • Several flavors available
  • Good reviews
  • Huge container with 7lb of powder

Who Makes It: MuscleTech is a large and popular manufacturer of sports science supplements. They have a long track record (20+ years) of success in developing award-winning products. In fact, they are the #1 most award-winning sports nutrition brand in the US! They also have several #1 best-selling individual products. All their offerings are made in the USA, in a cGMP certified facility. Overall, MuscleTech is a very trustworthy company when it comes to fitness supplements.

Bottom Line: Overall, this is among the best mass gainers out there. Its formula covers all the bases, and features added bonuses like BCAAs, creatine and a digestive complex. It’s manufactured by a trustworthy, award-winning company, and its cost-per-serving is very reasonable.

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Where to Buy MASS-TECH

4. BSN True Mass 1200

Bsn True Mass

BSN True Mass 1200 is one of the best weight gain supplements available. With 50g of high quality protein, 222g of carbohydrates, and much more, True Mass is an all around solid product.


  • 50g high quality protein per serving
  • 222g carbohydrates
  • 23g Essential Amino Acids
  • 12g BCAAs
  • 16g dietary fiber
  • 1220 calories
  • Added vitamins and minderals
  • Added glutamine
  • Reasonably Low sugar (16g per serving)
  • Small serving size
  • Easy to mix
  • 3 flavors available

Who makes it: True Mass 1200 is made by BSN, one of the biggest and best companies in the supplement industry. For many years, BSN has been a pioneer of the industry, developing effective and innovative products for weightlifters and athletes alike. They have received many awards, and have millions of loyal customers.

Bottom Line: True Mass 1200 is one of the best weight gainers available, and also one of the best-tasting – if you read mass gainer reviews, you’ll see that most people like the taste of this supplement. True Mass makes a simple, tasty shake that helps you reach your fitness goals by providing all the necessary nutrients for lean muscle mass gains.

Full Breakdown: BSN True Mass 1200 Review

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Where to Buy BSN True Mass 1200

5. Universal Nutrition Real Gains


Real Gains, made by Universal Nutrition, is one of the top rated mass builders on the market. Designed for active people looking to pack on the most mass possible, Real Gains has just about everything you need to build the body of your dreams – just add exercise, proper nutrition and dedication!


  • 52g protein per serving
  • 87g carbohydrates
  • 610 calories
  • Only 5g sugar
  • 5g dietary fiber
  • Includes healthy fats such as MCT’s, flax seed oils and more
  • Very affordable
  • Simple and effective
  • Small serving size
  • Mixes easily

Who makes it: Real Gains is made by Universal Nutrition, a company which has become a household name in the fitness community. For many years, Universal Nutrition has helped set the standard for quality in an ever-changing industry. Today, they manufacture a large line of highly effective supplements to suit the needs of a wide range of customers.

Bottom Line: Universal Nutrition Real Gains is a very good weight gainer. It’s affordable, simple formula gives you all the required nutrition to help you gain weight and muscle, and it doesn’t contain anything unnecessary or any fillers. If you’re looking for an effective, no-nonsense mass building supplement, Real Gains is a great choice.

Full Breakdown: Universal Nutrition Real Gains Review

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Where to Buy Universal Nutrition Real Gains

6. Dymatize Super Mass Gainer


Super Mass Gainer is a good weight gainer supplement made by Dymatize Nutrition. It combines high quality protein with added amino acids, creatine, carbohydrates, glutamine, and more.


  • 52g protein per serving
  • 252g carbohydrates
  • 19g sugar
  • 2g amino acid blend (glutamine, glutamine peptides, l-leucine, l-isoleucine, l-valine and zytrix)
  • 1280 calories
  • Available in vanilla and chocolate

Who makes it: Super Mass Gainer is made by Dymatize Nutrition, a large scale producer of fitness supplements. Since 1994, Dymatize has strived to develop cutting-edge products that help their customers reach – and exceed – their fitness goals.

Bottom Line: Dymatize Super Mass Gainer is one of the top weight gainers on the market. It provides a huge dose of carbohydrates and protein, which help you reach daily caloric goals. Its complex carbohydrate blend can help give you sustained energy for your day.

Full Breakdown: Dymatize Super Mass Gainer Review

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Where to Buy Dymatize Super Mass Gainer

7. Mass JYM

Mass Jym

Mass JYM is a unique mass gainer that has excellent reviews. It provides a balanced dietary profile, with less carbohydrates than average, and more fat. One big benefit of this product is that it does not use proprietary blends, so you can see each specific ingredient that’s included and the specific amount of that ingredient. It also uses a great mix of each macronutrient, offering 3 types of protein, 2 types of carbs, and a broad selection of beneficial fats.


  • 30g protein per serving
  • 30g carbs
  • 5g fiber
  • 4g fat
  • 270 calories per serving
  • Blend of protein – whey, casein, milk and egg proteins
  • Mix of healthy fats
  • Quality carbohydrates at a 1:1 ratio of carbs to protein
  • Excellent customer reviews

Who Makes It: This product is made by JYM Supplement Science, which was founded by Jim Stoppani. JYM Supplement Science won’s Brand of the Year award in 2018 and has received a number of other prestigious awards in the supplement industry. They have gained the trust of their customers by always disclosing the full ingredient profile and amounts, rather than using proprietary blends.

Bottom Line: Overall, this is a very good mass gainer with a decidedly different formula. Instead of loading you up on cheap carbohydrates (sugars), it uses fewer carbs and more protein and fat. This results in a lower calorie count, but a potentially superior nutrient profile. The company claims that using a 1:1 ratio of protein and carbs is ideal for healthy muscle mass gains.

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Where to Buy Mass JYM

8. Optimum Nutrition Serious Mass

Optimum Nutrition Serious Mass

Serious Mass is one of the best weight gain supplements available. Made by Optimum Nutrition, this product provides a huge dose of calories, protein, carbohydrates and more to help you reach your weight gain goals. It’s a good choice, although the large serving size and higher than usual price is a downside.


  • 50g protein per serving
  • 1,250 calories
  • 252g carbohydrates
  • Creatine and glutamine added
  • Added vitamins and minerals
  • Easy way to consume a ton of calories, protein and more
  • Helps gain weight
  • Available in 4 tasty flavors

Who makes it: Serious Mass is made by Optimum Nutrition, one of the most popular supplement companies out there. Best known for their Gold Standard line of products, Optimum Nutrition has been an industry leader since they formed in 1987. Today, you can’t go far in a gym or supplement store without seeing an ON product, and the company has received many awards and much recognition for their high quality products.

Bottom line: Overall, Serious Mass is one of the better supplements for weight gain because it provides a large dose of the nutrients needed for muscle mass gains. It’s a good choice, although the large serving size and higher than usual price is a downside.

Full Breakdown: Optimum Nutrition Serious Mass Review

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Where to Buy ON Serious Mass

9. Nature’s Best Isopure Mass

Natures Best Isopure Mass

Isopure Mass is a simple, high quality mass building supplement made by Nature’s Best. It combines 53g of high quality protein with carbohydrates, fiber, BCAAs, glutamine, and more. With no trans fat, lactose, or excessive sugar, this is a clean, simple product to help you gain weight.


  • 53g protein per serving
  • 600 calories
  • 86g carbohydrates
  • 4g fiber
  • Added vitamins and minerals (vitamin A, C, E, B6, B12, calcium, iron, zinc, and many more.
  • Only 3g of sugar
  • Affordable
  • Fairly small serving size
  • Free of lactose and trans fat
  • Good BCAA make up
  • Assists in weight gain

Who makes it: Up Your Mass is made by MHP, otherwise known as Maximum Human Performance. Since 1997, MHP has been dedicated to setting new standards in the sports nutrition industry, by developing and producing high quality, innovative and effective supplements.

Bottom Line: Nature’s Best Isopure Mass is a simple but highly effective mass gainer. It does not contain lactose, which makes it a good product for those who are lactose intolerant. Its simple formula covers all the bases, without any unnecessary fillers.

Full Breakdown: Nature’s Best Isopure Mass Review

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Where to Buy Nature’s Best Isopure Mass

10. MHP Up Your Mass


Up Your Mass is an affordable mass gainer protein supplement made by MHP. Combining large amounts of protein, carbohydrates, BCAAs, vitamins and more, Up your Mass helps give your body what it needs to gain weight.


  • 46g protein per serving
  • 510 calories
  • 58g carbohydrates
  • 5g dietary fiber
  • Only 1.5g sugar
  • Added vitamins and minerals
  • Added lipids and essential fatty acids

Who makes it: Up Your Mass is made by MHP, otherwise known as Maximum Human Performance. Since 1997, MHP has been dedicated to setting new standards in the sports nutrition industry, by developing and producing high quality, innovative and effective supplements.

Bottom Line: Overall, MHP Up Your Mass is a great weight gainer. It covers all the bases and provides an easy way to increase your daily intake of protein, calories, and nutrients. That being said, there are cheaper options out there, and the fact that Up Your Mass uses soy protein isolate as a primary protein source might be a downside for some.

Full Breakdown: MHP Up Your Mass Review

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Where to Buy MHP Up Your Mass

Bonus: Vitol Russian Bear 5000


Vitol Russian Bear 5000 is a HUGE weight gain supplement. Its huge serving size is a downside for some people, but for those looking for the most calories and protein possible, this might be the best high-calorie weight gainer for you.


  • 184g protein per serving – yeah, you read that right
  • 2600 calories per serving
  • 391g carbohydrates per serving
  • 46g medium chain triglycerides
  • Huge amount of protein and calories in one product
  • Added anabolic compounds like yohimbe, boron and more
  • Added vitamins and minerals

Who makes it: Russian Bear 5000 is made by Vitol, a manufacturer of natural supplements and bodybuilding products. In business for more than 37 years, Vitol has come out with a lot of good products and has many loyal fans.

Bottom Line: Russian Bear 5000 is an great choice of weight gainer if you’re looking for the most calories and protein possible. That being said, the huge serving size is a little over the top. Many people use this product and take a ½ serving or even a ¼ serving, which is probably the best way to use it unless you’re on a very aggressive bulking cycle.

Full Breakdown: Vitol Russian Bear 5000 Review

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Where to Buy Vitol Russian Bear 5000

What to Look For in a Good Weight Gainer Product

There are a ton of options out there when it comes to choosing a mass building supplement.

Let’s take a look at some of the factors you should consider when choosing a supplement.

  • Ingredients – take a close look at the ingredients in any products you’re considering. What’s in it, and how much? How many calories per serving, how much protein, how many carbohydrates? Keep in mind how you can benefit from the included ingredients, and how the product will stack with other supplements you may be taking.
  • Brand reputation – is the manufacturer well-known and trustworthy? Do they have a good reputation for making quality products? All the products on this list below are made by reputable companies, but if you’re looking elsewhere be sure to do your research before buying anything.
  • Value for money – you’ll want to consider the price per serving of your various options. Always calculate the cost based on individual servings, instead of just the cost of the overall package. Also, keep in mind that cheap weight gainers will likely not be as high quality as the more expensive ones, so you’re not necessarily looking for the lowest priced product.
  • Taste/flavor – mass gainers usually have fairly large serving sizes, so it’s important to find a product that tastes good. It’s hard to know whether you’ll like the taste without trying it, but you can read mass gainer reviews to get an idea. Also – our top recommended products all taste great, so that’s a good place to start
  • Can you make it yourself – Mass gainers are pretty simple products that you can make yourself in a blender. Check out our high calorie weight gainer shake recipe.
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Written by Top10Supps

The Top10Supps team has over 10 years of experience in navigating the online supplement market. We seek out and present you some of the most popular, best selling and highest reviewed supplement brands you can purchase. Find out more about us or if you wish you can contact us.