25 Best Protein Powders for Weight Gain

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I’ve been in the health and fitness industry for almost ten years, and I can understand how difficult it can be for some people to choose the supplement that suits their goals the most.

As a medical doctor, I know from talking with patients how challenging it can be to gain muscle mass. Sometimes it's hard to hit your target calories and protein goals for the day, and busy individuals don’t always have the time to cook and prepare their meals for the day or week. That’s when weight gainers make their entrance.

The best protein powders for weight gain in 2023 are:

1. Optimum Nutrition Serious Mass Weight Gainer – Best Overall 
2. Optimum Nutrition GS Pro Gainers – Best Tasting Protein Powder for Weight Gain
3. Dymatize Super Mass Gainer – Best Mixing Protein Powder for Weight Gain
4. GNC Pro Performance Bulk 1340 – Best for Athletes
5. MRM Nutrition Gainer Protein – Best for Digestion
6. Body Fortress Super Advanced Whey Protein – Best Budget-Friendly Protein Powder for Weight Gain
7. Mutant Mass Weight Gainer Protein Powder – Best Natural Protein Powder for Weight Gain
8. Naked Mass – Best for Vegans
9. ALLMAX Nutrition QuickMass – Best Low-Sugar Protein Powder for Weight Gain
10. MuscleTech Mass-Tech Elite Mass Gainer – Best for a High Protein Content
11. BSN TRUE-MASS Weight Gainer – Best Ingredient Quality
12. Forzagen Lean Gainer Premium Mass Builder – Best FDA-Approved Protein Powder for Weight Gain 
13. Ronnie Coleman Signature Series King Mass XL Mass Gainer – Best Protein Powder for Weight Gain With Glutamine
14. Nutricost Mass Gainer – Best Third-Party Tested Protein Powder for Weight Gain
15. Muscle Milk Gainer – Best NSF-Certified Protein Powder for Weight Gain
16. Rivalus Clean Gainer – Best Protein Powder for Weight Gain With No Banned Substances 
17. MuscleMeds Carnivor Mass – Best Gluten-Free Protein Powder for Weight Gain
18. Myogenix Aftershock Critical Mass – Best Lactose-Free Protein Powder for Weight Gain
19. IRONVEGAN Gainer – Best Protein Powder for Weight Gain for the Paleo Diet
20. Isopure Whey Isolate – Best Keto-Friendly Protein Powder for Weight Gain
21. Orgain Organic Protein – Best Organic Protein Powder for Weight Gain
22. Ultimate Nutrition Muscle Juice Revolution 2600 – Best for Multiple Protein Sources 
23. BULK SUPPLEMENTS Whey Protein Isolate – Best Unflavored Protein Powder for Weight Gain
24. Garden of Life Sport Whey Protein – Best Grass-Fed Protein Powder for Weight Gain
25. MusclePharm Combat – Best Warranty

If you’re looking to gain weight, continue reading down so you can buy the right supplement and learn how to choose it.

Let’s dig in!

Featured Products

1. Optimum Nutrition Serious Mass Weight Gainer – Best Overall
2. Body Fortress Super Advanced Whey Protein Powder Mass Gainer – Best Budget-Friendly Protein Powder for Weight Gain
3. Optimum Nutrition GS Pro Gainers Weight Gainer Protein Powder – Best Tasting Protein Powder for Weight Gain

Why You Should Trust Powerlifting Technique

The PowerliftingTechnique team is made up of trainers, coaches, athletes, and doctors. We have decades of experience working with athletes at the highest level, training our clients and ourselves. We understand firsthand the community’s problems and how to solve them.

We’ve tried and reviewed dozens of protein powders for weight gain to deliver you the best options that suit your goals. My colleagues and I have personally tried many of the protein powders on this list, so you can trust our recommendations regarding taste, mixability, and overall quality.

25 Best Protein Powders for Weight Gain

After reviewing this list, consider checking out California Gold Nutrition's dietary supplements on iHerb, including whey protein isolate, plant-based protein, BCAA powder, and more.

1. Optimum Nutrition Serious Mass Weight Gainer – Best Overall 

Nutrition Information

• Serving size: 2 scoops
• 1250 calories
• 50 grams of protein
• 253 grams of carbohydrates
• 4 grams of fat

Pros

• Great content of vitamins C, D, E, and zinc
• High-calorie gainer with 1,250 calories per serving (2 scoops)
• Great taste
• Easy to mix

Cons

• May cause belly fat if your training is not hard enough
• Can cause bloating in some people

Optimum Nutrition Serious Mass Weight Gainer has existed for several years. The incredible flavor and mixability make it a favorite for many fitness enthusiasts. It’s also why I ranked this product as the best protein powder for weight gain.

I’ve personally used it in the past for about two months and gained around 8kg. I recommend using half a serving daily and mixing it with water or fat-free milk to reduce the chances of bloating and belly fat.

2. Optimum Nutrition GS Pro Gainers – Best Tasting Protein Powder for Weight Gain

Nutrition Information

• Serving size: 1 scoop
• 650 calories
• 60 grams of protein
• 81 grams of carbohydrates
• 9 grams of fat

Pros

• Great taste with no sugary aftertaste
• Ideal for people working on a clean bulk due to the lower amount of carbs and calories
• Mixes very well with milk and water

Cons

• More expensive than the average weight gainer
• May cause gas in some individuals

The Gold Standard Pro Gainer is the perfect weight gainer for fitness enthusiasts working on a clean bulk. A downside of most gainers is that they contain high quantities of carbs, fats, and sugars, which are not ideal if you want to increase your weight without gaining excess fat.

This is where the GS Pro Gainers makes its entrance. Because it’s lower in calories than other mass gainers, you can get the extra calories you need to gain weight without the risk of gaining too much body fat.

The Double Chocolate and Vanilla Custard flavors are ideal for a post-workout protein shake full of minerals and vitamins. Both flavors taste great, and there’s no weird aftertaste.

3. Dymatize Super Mass Gainer – Best Mixing Protein Powder for Weight Gain

Nutrition Information

• Serving size: 2.5 cups
• 1280 calories
• 52 grams of protein
• 245 grams of carbohydrates
• 10.7 grams of BCAA

Pros

• One of the best mixing profiles among high-calorie gainers
• All of the flavors taste great
• High BCAA content

Cons

• Has a high sugar content
• Contains GMO ingredients

The Dymatize Super Mass gainer has one of the best mixing profiles among all current high-calorie gainers, which is a lot to say considering the density of the powder.

I can personally vouch for its mixability. On multiple occasions, I didn’t use anything but a regular spoon. This and the great-tasting flavors make it a fan favorite within the fitness community.

4. GNC Pro Performance Bulk 1340 – Best for Athletes

Nutrition Information

• Serving size: 2 heaping scoops
• 1340 calories
• 50 grams of protein
• 277 grams of carbohydrates
• 11 grams of BCAAs

Pros

• Contains fast, medium, and slow-releasing protein, which keeps the muscles fed longer
• Every serving has 11 grams of BCAAs for muscle recovery and growth
• Contains glutamine, a crucial amino acid that helps support immune response and overall muscle health
• Free of banned substances

Cons

• Taste could be better
• The biggest bag is only 15 servings

There’s a reason why GNC products have been on the market for so long. The Bulk 1340 is an ideal option for athletes looking to gain weight without worrying about banned substances.

With 11 grams of BCAAs and glutamine, the Bulk 1340 has a profile that improves muscle recovery and growth while enhancing your immune response and overall health. Although the taste may not be the best compared to others, I’ve spoken to many people who are a fan of the brand’s flavors.

5. MRM Nutrition Gainer Protein – Best for Digestion

Nutrition Information

• Serving size: 2 scoops
• 350 calories
• 25 grams of protein
• 50 grams of carbohydrates
• 5 grams of fat
• 10mg of a probiotic blend

Pros

• Contains enzymes and probiotics to help balance the microbiome for better immune and digestive health
• Has a clean carbohydrate complex of fast and slow-digesting carbs and fiber to provide a long-lasting energy source without creating blood sugar spikes
• Each serving combines whey protein concentrate, isolate, and micellar casein to provide fast and slow-digesting proteins

Cons

• The flavors tend to be too light and almost non-existent for some people
• The calorie profile may be too low for individuals looking to gain weight faster

MRM Nutrition developed one of the best and safest weight gainer supplements for gut health. With more than 1 billion pro and postbiotics, it helps balance the microbiome and reduce bloating and gassiness.

You’ll notice a thin texture, making digestion easier and smoother than other high-calorie gainers. Although the taste is okay, the flavors tend to be weaker. However, this could be useful when mixing it with fruits or other beverages.

6. Body Fortress Super Advanced Mass Gainer Whey Protein – Best Budget-Friendly Protein Powder for Weight Gain

Nutrition Information

• Serving size: 2 scoops
• 390 calories
• 60 grams of protein
• 15 grams of carbohydrates
• 8 grams of fat
• 3 grams of creatine

Pros

• Affordable price makes it a terrific option for beginners and people running a tight budget
• Taste is delicious, even with only water
• Doesn’t contain gluten or aspartame, which makes it ideal for vegans or those who are gluten-intolerant

Cons

• Some people find the caloric profile too low
• Can remain lumpy, even after blending

The supplement market is filled with overpriced products that don’t deliver results as promised. Body Fortress found a way to create a product that tastes great and, most importantly, is affordable.

For less than $40, depending on where and when you buy it, you can get a 5-lb value size with 45 servings ready to help you grow. This gainer is also ideal for people on a clean bulk because the calorie profile is low compared to others, but the protein per serving is high (60 grams of protein).

If you’re a beginner looking for a weight gain powder while watching your budget, look no further — this is the supplement for you.

7. Mutant Mass Weight Gainer Protein Powder – Best Natural Protein Powder for Weight Gain

Nutritional Information

• Serving size: 4 scoops
• 1100 calories
• 56 grams of protein
• 192 grams of carbohydrates
• 12 grams of fat
• 12.2 grams of BCAAs
• 26.1 grams of EEAs

Pros

• Made from whole natural foods, which makes the ingredient list more organic and easier for you digestive system to process
• Has a gourmet taste, whether you mix it with water or milk
• Mixes well
• Price is lower than most of the competitors on the market

Cons

• May arrive with fewer servings than advertised
• May cause vomiting and diarrhea after a few weeks of use

Mutant Mass Gainer has been known over the years for the quality of its ingredients. The company takes pride in using natural sources such as barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed, and sunflower oil.

With five great flavors, Mutant consistently pushes the boundaries of its gourmet taste in its powder. The nutrient profile has only 12 grams of fat per serving, making it ideal for those looking to have a clean bulk.

8. Naked Mass – Best for Vegans

Nutritional Information

• Serving size: 4 scoops
• 1230 calories
• 50 grams of protein
• 248 grams of carbohydrates
• 4 grams of fat
• 10.3 grams of BCAAs

Pros

• Only has three natural ingredients (Naked Whey, Naked Casein, and Organic Maltodextrin, made from gluten-free, organic tapioca)
• Free of gluten, GMOs, artificial sweeteners, and soy
• Keeps protein synthesis up by combining fast-release grass-fed whey with slow-digesting micellar casein

Cons

• More expensive than the average competitor
• The biggest jar (8 lbs) is only 11 servings

Naked is one of the most respected brands on today’s market. Since it first came out in 2014, its products have been a favorite within the fitness community, especially amongst vegans, thanks its use of plant-based protein sources.

Known for its natural and high-quality ingredients, the Naked Mass Bulk is a go-to for anyone looking for a weight gain protein powder without dealing with banned substances or sketchy ingredients that leave weird aftertastes and diarrhea.

Naked Mass comes unflavored or in a chocolate flavor, which has an excellent taste that is ideal for mixing with any beverage or fruit.

9. ALLMAX Nutrition QuickMass – Best Low-Sugar Protein Powder for Weight Gain

Nutrition Information

• Serving size: 4 scoops
• 1010 calories
• 64 grams of protein
• 170 grams of carbohydrates
• 8 grams of fat
• 12 grams of sugar

Pros

• Doesn’t contain any added sugars and has only 3 grams of sugar per scoop, which is ideal for people trying to limit their sugar intake while gaining weight
• The taste and mixing qualities are phenomenal, whether you mix it in milk or water
• Contains a blend of carbohydrates, including high-molecular weight maltodextrin, sweet potato, quinoa, and oat fiber, to lengthen nutrient delivery and provide sustained levels of higher energy

Cons

• Can cause bloatedness after a few days of trying a full serving (4 scoops)
• The strawberry-banana flavor may taste medicinal to some

When looking to gain weight, keeping the amount of sugar at a minimum is a priority for many. Most weight gainer powders spike glucose levels, which could lead to insulin-related diseases (diabetes) over time.

ALLMAX has done a terrific job keeping the added sugar levels as low as possible while providing a high-quality product with five flavors that can be easily mixed with water.

10. MuscleTech Mass-Tech Elite Mass Gainer – Best for a High Protein Content

Nutrition Information

• Serving size: 5 scoops
• 1000 calories
• 80 grams of protein
• 156 grams of carbohydrates
• 7 grams of fat
• 10 grams of creatine
• 18 grams of BCAAs

Pros

• Delivers more protein and calories than other mass gainers
• Each serving size (5 scoops) contains 10 grams of creatine, which is the most of any gainer on the market
• Promotes better amino acid absorption for muscle building and recovery

Cons

• The serving size (5 scoops) may be too big for some people
• The flavor is inferior compared to other gainers

If you want to gain weight and a good-tasting flavor is not that important to you, then the MuscleTech Mass-Tech Elite Mass Gainer is the one for you. With 10 grams of creatine and 18 grams of BCAAs, this weight gainer is a favorite for rapid weight gain. 

The Mass-Tech has 80 grams of protein per serving which comes in handy for gaining weight while keeping body fat low. It’s important to remember that a high-protein diet has been found to be effective for muscle synthesis and fat loss.

Although the flavor and mixing are subpar, it’s hard to deny the results from this mass gainer after a few weeks of consistent use. It tastes sugary, but half a serving twice daily can improve the tasting experience.

11. BSN TRUE-MASS Weight Gainer – Best Ingredient Quality

Nutrition Information

• Serving size: 2 scoops
• 1200 calories
• 50 grams of protein
• 215 grams of carbohydrates
• 17 grams of fat
• 12 grams of BCAAs

Pros

• Delicious taste and mixing qualities
• Each ingredient is manufactured in a GMP (Good Manufacturing Practices) facility, ensuring a high-end quality so the digestive process is way smoother than competitors.
• The serving size is only two scoops, which can be taken once or split twice throughout the day

Cons

• May taste too sweet for some people
• May cause diarrhea with only half a serving

BSN products have been known for their delicious flavors and textures on all of their products, and the TRUE-MASS WEIGHT GAINER is no exception. Although some people have flagged it as too sweet, when mixed with water, the flavor is great.

In my experience, the best way to use it is to take half a service twice a day. One before/after working out and the other before bed. That way, you can keep your muscles fed for longer.

12. Forzagen Lean Gainer Premium Mass Builder – Best FDA-Approved Protein Powder for Weight Gain

Nutrition Information

• Serving size: 4 scoops
• 1230 calories
• 50 grams of protein
• 250 grams of carbohydrates
• 7 grams of fat

Pros

• Made in an FDA and GMP-approved facility
• Bag is environmentally friendly
• The carbohydrates are from natural sources (yams, sweet potatoes, oats)

Cons

• The bag is hard to close/keep closed after opening and requires a separate container
• The flavor is not the best compared to other weight gainers

Forzagen has done a terrific job putting together a high-quality product under high-quality standards. It’s approved by the FDA and GMP (Good Manufacturing Practices), which is proof of the seriousness and effort the team has invested in making a great protein powder.

The eco-friendly bag helps reduce the carbon footprint of shipping and packaging. This is ideal for athletes who care about the environment and want to support sustainable companies.

Although the flavor can be inconsistent and taste somewhat medicinal, it’s not as bad when mixed with fruit or milk. The value for money is also fantastic compared to the competition due to the almost 20 servings per bag.

13. Ronnie Coleman Signature Series King Mass XL Mass Gainer – Best Protein Powder for Weight Gain With Glutamine

Nutrition Information

• Serving size: 4 scoops
• 1000 calories
• 60 grams of protein
• 180 grams of carbohydrates
• 6 grams of fat

Pros

• Fantastic milkshake taste
• Includes glutamine (amino acid) for enhanced recovery
• Contains healthy fats and complex and simple carbs

Cons

• Doesn’t mix very well
• Can cause bloating after a few weeks of use

Ronnie Coleman isn’t only one of the greatest bodybuilders of all time, but he’s also responsible for pushing a great product to an already loyal fan base.

The King Mass XL has helped thousands achieve their weight goals. With its incredible milkshake flavor and texture, this product has earned a place in the muscles of many fitness enthusiasts looking to get swole.

The fact that glutamine has been proven to enhance protein synthesis, and increase muscle size it’s another bonus point to this great product. With only 5 grams a day you can enjoy these benefits over 6-16 weeks of constant use. 

14. Nutricost Mass Gainer – Best Third-Party Tested Protein Powder for Weight Gain

Nutrition Information

• Serving size: 3 scoops
• 1210 calories
• 50 grams of protein
• 240 grams of carbohydrates
• 6 grams of fat

Pros

• Manufactured in a GMP-compliant & FDA-registered facility
• Great for people with sensitive digestive systems due to being non-GMO and gluten-free
• Tested by Independent, ISO-Accredited Laboratories.

Cons

• The taste is not the best compared to other products
• The serving size (3 scoops) is too big for a regular shaker

I’ve been using Nutricost products for over a year now, and I can testify to the quality of their ingredients. Although the taste is not top-notch, it’s easy to digest, which has to do with being gluten-free and non-GMO.  

The fact that it is manufactured in a GMP-compliant and FDA-registered facility brings more value than other products because of the high standard in the manufacturing process.

15. Muscle Milk Gainer – Best NSF-Certified Protein Powder for Weight Gain

Nutrition Information

• Serving size: 4 scoops
• 650 calories
• 32 grams of protein
• 109 grams of carbohydrates
• 3.5 grams of fat
• 5 grams of fiber
• 2.5 grams of MCT

Pros

• Vanilla flavor is great
• Mixes well
• NSF Certified for Sport, so you don’t have to worry about banned substances
• Caloric profile makes it ideal for those looking to get a clean bulk

Cons

• It may not be ideal for someone looking to gain weight rapidly
• The chocolate flavor tastes like corn

The Muscle Milk brand has been supporting athletes from all sports since 1998, which is why many professionals still trust the brand.

The NSF certification means you don’t have to worry about unknowingly ingesting banned substances. That’s extremely important when playing in professional leagues or other drug-tested sports where doping is a serious offense.

16. Rivalus Clean Gainer – Best Protein Powder for Weight Gain With No Banned Substances

Nutrition Information

• Serving size: 4 scoops
• 560 calories
• 30 grams of protein
• 99 grams of carbohydrates
• 4.5 grams of fat

Pros

• Tested and monitored for over 250 banned substances
• Ideal for those working on a clean bulk
• Great flavors include Chocolate Fudge, Soft Serve Vanilla, Cookies & Cream, Chocolate Peanut Butter, Cinnamon Toast Cereal, and S’Mores

Cons

• Can cause gassiness and bloatedness
• Not ideal for people with sensitive digestive systems

Rivalus Clean Gainer is a solid option for those seeking a lean bulk who don’t want to worry about consuming banned substances. It is third-party tested by LGC, an accredited, independent anti-doping laboratory. This is important if you play sports at a professional level where doping is frowned upon.

With six different flavors, you can easily find one that suits your tastes.

17. MuscleMeds Carnivor Mass – Best Gluten-Free Protein Powder for Weight Gain

Nutrition Information

• Serving size: 4 scoops
• 710 calories
• 50 grams of protein
• 122 grams of carbohydrates
• 2 grams of fat

Pros

• It’s easier on the stomach due to being lactose, sugar, dairy, and gluten-free
• Made out of 100% beef protein isolate (BPI), which is ideal for those on a carnivore or keto diet

Cons

• The flavor and taste are not so good
• Doesn’t mix as well as other products

I couldn’t believe my ears when I heard about this protein. For the first time in the supplement world, a protein powder made strictly out of beef was hitting the fences in terms of results and success stories.

The Carnivore Mass is a terrific option for those with a sensitive digestive system who want to gain weight and muscle mass. This gainer is lactose, sugar, dairy, and gluten-free, so anyone who needs to avoid those ingredients can take this powder without experiencing negative side effects.

18. Myogenix Aftershock Critical Mass – Best Lactose-Free Protein Powder for Weight Gain

Nutrition Information

• Serving size: 3 scoops
• 680 calories
• 91 grams of carbohydrates
• 51 grams of protein
• 13 grams of fat

Pros

• Doesn’t contain any lactose, which is ideal for intolerances and allergies.
• Taste is pretty good and consistent
• Includes vitamin C, B vitamins, and alpha lipoic acid, all designed to help improve overall health

Cons

• Some quality control issues, including receiving the wrong product or the package arriving opened

The world of weight gainers is full of products filled with poor-quality ingredients that can cause allergies and digestive problems. The Myogenix Aftershock Critical Mass has proved effective for people with lactose intolerance.

If you’re struggling with dairy allergies, this is your product. It also contains vital nutrients that are critical for muscle growth and recovery, all for a reasonable and affordable price.

Check out our selection of the Best Protein Powders For Lactose Intolerance.

19. IRONVEGAN Gainer – Best for Paleo Diet

Nutrition Information

• Serving size: 2 scoops
• 720 calories
• 120 grams of carbohydrates
• 42 grams of protein
• 8 grams of fat
• 12 grams of fiber

Pros

• Ideal for people on the Paleo diet due to its 42 g of non-GMO plant-based protein (fermented pea and brown rice)
• Tested for banned substances
• Good for vegans

Cons

• The bag’s sealing is not great
• Doesn’t mix well

Being a vegan is challenging, but finding a weight gainer powder that meets the demand is even harder. Thankfully, if you’re a vegan or following a Paleo diet, the IRONVEGAN gainer might be the perfect option because it doesn’t contain dairy; the protein source is plant-based.

It has great taste, and the fact that it is tested for banned substances makes it a terrific option for vegan athletes and the general vegan population. The high fiber content is also ideal for people with sensitive digestive systems.

20. Isopure Whey Isolate – Best Keto-Friendly Protein Powder for Weight Gain

Nutrition Information

• Serving size: 1 scoop
• 100 calories
• 0g of carbohydrates
• 25 grams of protein
• 0 grams of fat

Pros

• Doesn’t contain carbohydrates
• Vitamin C, zinc, and vitamin E provide immune support
• Ideal for a clean bulk

Cons

• Doesn’t include a scoop
• Taste could be better

The Isopure Whey Isolate is a terrific product for those looking to gain muscle while caring for their digestive system. This product doesn’t contain soy or gluten, which causes less inflammatory responses by the body.

The whey isolate protein powder is also very high-quality and provides the right protein for any diet. It’s nutrient-dense and ideal for those trying the keto diet because it doesn’t have any carbs. It mixes easily with water, milk, or any other liquid.

21. Orgain Organic Protein – Best USDA Organic Protein Powder for Weight Gain

Nutrition Information

• Serving size: 2 scoops
• 160 calories
• 21 grams of carbohydrates
• 21 grams of protein
• 4.5 grams of fat

Pros

• USDA Organic certification ensures the products are grown and processed according to soil and water quality standards, among other factors
• Ideal for vegans or people with lactose intolerance
• Contains 50 superfoods that help improve your digestive health

Cons

• Taste can be better
• Few servings

Orgain Organic Protein is one of the best protein powders available today. The USDA Organic certification has made this product a terrific option for those looking to get their protein from plant-based sources.

While many other options hurt the digestive system and cause bloatedness and gas, the Orgain protein digests much more easily. It’s free of soy, gluten, and non-GMO ingredients.

22. Ultimate Nutrition Muscle Juice Revolution 2600 – Best for Multiple Sources of Protein

Nutrition Information

• Serving size: 4 scoops (with 18 fluid ounces of 2% milk)
• 1300 calories
• 74 grams of protein
• 390 grams of carbohydrates
• 25 grams of fat

Pros

• Has a protein blend that helps to supply eight vital proteins necessary for exercising
• Great taste
• Contains glutamine, which helps reduce muscle breakdown.

Cons

• Hard to mix
• Some people find it sugary

Ultimate Nutrition has been an example of high-quality products for many years. The Muscle Juice Revolution 2600 is proof of that. The combination of the protein blend and the 390 grams of carbohydrates makes it a great option for people looking to gain weight.

It contains eight different types of protein: whey protein concentrate, whey protein isolate, milk protein isolate, hydrolyzed whey, egg protein, micellar casein, calcium caseinate, and milk protein concentrate. The blend allows amino acids to be digested quickly to promote recovery after a workout and helps with satiety.

It’s also ideal for sensitive digestive systems since it doesn’t contain gluten, soy, dyes, or fillers. The combination of great taste and high caloric profile makes it a top competitor.

23. BULK SUPPLEMENTS Whey Protein Isolate – Best Unflavored Protein Powder for Weight Gain

Nutrition Information

• Serving size: 4 tbsp
• 110 calories
• 26 grams of protein
• 0 carbs
• 0 fats

Pros

• Comes unflavored, which is ideal for adding flavored ingredients
• Free of added sugar, soy, yeast, gluten, and additives
• Ideal for a clean bulk

Cons

• Doesn’t mix well
• Package sealing is subpar

The BulkSupplements company is known for its ingredients’ purity and additive-free supplements. It doesn’t cause bloating and nausea like many other protein powders do.

The whey protein isolate was my favorite protein for more than a year. Because it’s unflavored, I added it to my smoothies, cookies, and protein pancakes. I can’t recommend it enough.

24. Garden of Life Sport Whey Protein – Best Grass-Fed Protein Powder for Weight Gain

Nutrition Information

• 120 calories
• 24 grams of protein
• 6 grams of carbohydrates
• 2 billion probiotics

Pros

• Lean whey protein and grass-fed certified
• Ideal for athletes (NSF certified)
• Non-GMO, Soy, and gluten-free

Cons

• The taste is not as great
• Doesn’t mix very well

Garden of Life is one of the newest and more distinguished brands to support grass-fed whey protein. The high-quality standard and NSF certification have made it an ideal option for professional and recreational athletes looking to stay away from banned substances.

Grass-fed whey is considered to be better than regular whey protein for many people because of the fat content. Regular whey is fat-free, while grass-fed whey is rich in fat, and thus fat nutrients like vitamin E, omega-3 fatty acids, and CLA (conjugated linoleic acid)  are found in these products.

It’s also a terrific solution for individuals looking to care for their digestive system since it doesn’t contain soy, GMOs, or gluten. It doesn’t taste as good as other options, but you can improve the taste by mixing it with almond milk.

25. MusclePharm Combat – Best Warranty

Nutrition Information

• Serving size: 1 scoop
• 140 calories
• 25 grams of protein
• 6 grams of carbohydrates
• 1.5 grams of fat

Pros

• Backed by a 30-day full money-back guarantee.
• Banned-substance tested and certified by Informed Choice
• Excellent taste

Cons

• Relatively expensive for the number of servings
• Doesn’t mix well

MusclePharm is known for its great-tasting and high-quality ingredients. The brand is so confident in its products that each purchase includes a 30-day full money-back guarantee.

The fact that it’s also tested for banned substances makes it ideal for athletes and people looking to keep a diet as clean as possible. It’s perfect for smoothies and shakes that taste great and is highly effective at helping build muscle and assisting in recovery.

Want options for protein bars and bites? Check out Onnit's full selection.

Buying Guide: How To Choose a Good Protein Powder for Weight Gain

Choosing the best protein for weight gain is no easy game, especially with a market filled with marketing gimmicks. I’ve compiled a buying guide with the most important variables to consider to make it easier for you.

Third-Party Testing

This is when an organization (other than the company itself) evaluates a supplement and vouches for its quality.

It includes:

• Audit the manufacturing process
• Evaluation of the product’s quality
• Evaluation of labeling to ensure it is accurate and compliant with regulations

When a product has this label, it means that it can be trusted.

GMP Certification

When a product has the cGMP or GMP seal/certification, it means it was made in an FDA-approved facility.

It doesn’t mean the FDA approved its use, but rather that the facility is compliant with the FDA’s regulation policies.

Includes Nutritional Label

Including a nutrition facts label on the product ensures that there’s transparency in providing the right information to the consumer. Not having it listed on the outside of the bag or jar could be seen as shady.

When looking for a weight gainer nutritional label, pay attention to the total calories per serving. Also, take a look at how much protein, fat, carbs, and sugar it contains. If you’re vegan, make sure the protein source is plant-based.

NSF Certified

NSF stands for National Science Foundation. This badge confirms the product is free of banned substances, contaminants, or masking agents. It’s the only third-party certification program acknowledged by the United States Anti-Doping Agency (USADA), the MLB, and the NHL.

Although it may not be important for the general population, it’s extremely valuable for professional athletes.

Looking for a top-rated plant-based protein powder? Check out Onnit's Plant-Based Protein.

What Are the Differences Between Whey and Casein Protein?

The most important thing in muscle growth is consuming enough protein so that your muscles spend as little time as possible in the catabolic state (muscle breakdown). However, choosing between whey and casein protein can be a crucial differentiator for many people.

Casein Has a Lower Absorption Rate

Although whey protein has more nutritional value, casein is absorbed slower by the body, which makes it ideal for taking before bed to fight the catabolic state.

Whey Protein Has More Nutritional Value

Whey protein contains a higher amount of the BCAA leucine, the most important amino acid for building muscle. It also has more isoleucine and valine compared to casein protein.

Whey Protein Tastes Better

Both protein powders have great taste, but whey protein seems to have a more gourmet taste that many people look for. Plus, it mixes more easily.

Casein Is More Expensive

Compared to whey protein, casein tends to be more expensive. It can be 30-40% more expensive in some scenarios than whey protein.

Check out these other articles if you’re a powerlifter looking to better understand how to eat:

• Female Powerlifting Diet: Complete Guide
• What To Eat During A Powerlifting Meet? (6 Rules To Follow)
• Do Powerlifters Eat Whatever They Want? (No, Here's Why)

Frequently Asked Questions

When Is the Best Time To Drink Protein Powder for Weight Gain?

The best time to drink protein to gain weight is after a workout or dinner before bed. Whether that be after a muscle breakdown session at the gym or before going hours without eating, this timing will ensure that your body and muscles remain fueled with calories at key moments.

When Will I See Results After Using a Protein Powder for Weight Gain?

Although this is very hard to predict, most people start seeing results after 4-6 weeks of consistently using weight-gainer protein powder. It all boils down to how many scoops or servings you drink daily and your nutrition and training program.

How Many Scoops of Protein Powder for Weight Gain Should I Take a Day?

The best weight gain protein powders require 2-4 scoops per serving size. Depending on your goals, you can take 2-4 daily scoops. Be mindful that the more daily scoops, the more aggressive the weight gain could be, and vice versa.

What Are Some Side Effects of Weight Gainer Protein Powder?

Some side effects of supplements for weight gain may include bloatedness, acne, constipation, increased risk of diabetes, liver and kidney problems, and muscle cramps. Although these symptoms are not always present, and some people never experience them, they are real, and you should pay attention to them.

Final Verdict: What Is the Best Protein Powder for Weight Gain?

After reviewing the best protein powder to help you gain weight, the Optimum Nutrition Serious Mass Weight Gainer stands for the best overall with its incredible taste, solid nutritional profile, and affordability.

A secondary option is the Muscle Juice by Ultimate Nutrition. A combination of great caloric profile and taste makes it ideal for beginners and advanced lifters looking to gain more weight.

As the most budget-friendly option, the Body Fortress Super Advanced Whey Protein is the superior pick. You can get a huge deal of high-quality calories, and protein blends for an affordable price.

However, before purchasing, understand your fitness goals and read the buying guide again to filter through all of your options.