10 Best Protein To Gain Weight And Muscle Mass in 2026
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The Rule 1 Proteins Mass Gainer is our Best Overall pick for anyone serious about packing on size. It delivers over 1,200 calories, 40g of all-whey protein, and added creatine in every serving. For those who want the highest protein count, the Dymatize Super Mass Gainer offers 52g per shake. If clean ingredients are your priority, the NAKED Mass Natural Weight Gainer is the top choice.
The real challenge with mass gainers isn’t finding one, it’s finding one that fits your digestive system, your calorie target, and your ingredient standards without turning into a chore to drink. Many are loaded with sugar and artificial additives, while others are so thick they feel like a meal you have to force down.
We built this guide by digging into the specs, reading through expert round-ups, and looking at what real owners consistently say about taste, mixability, and results. Our goal is to match you with the protein that makes gaining weight feel doable, not miserable.
Top 10 Proteins To Gain Weight And Muscle Mass in the Market
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The Best Proteins To Gain Weight And Muscle Mass, Reviewed
Rule 1 Proteins Mass Gainer
What We Like
- 1,220+ calories per serving for serious weight gain
- 40g all-whey protein with 9g BCAAs
- 250g+ complex carb blend for energy
- Enhanced with pure creatine monohydrate
Trade-offs
- Two-scoop serving requires mixing 18-20 oz of liquid
- Not suitable for those avoiding creatine monohydrate
Over 1,220 calories and 250 grams of carbs per serving mean this isn’t a shake you sip lightly, it’s a deliberate tool for packing on mass when your regular meals need backup. The 6:1 carb-to-protein ratio leans heavily toward energy surplus, and the 40 grams come from three types of whey, not a blend of cheaper proteins. That mix, plus added creatine monohydrate, makes it a straightforward choice for anyone who wants to see the scale move without guessing whether their supplement is pulling its weight.
The trade-off is the serving size: two scoops require mixing with 18-20 ounces of liquid, which makes for a substantial shake that takes some getting used to. Compared to a leaner option like Transparent Labs Mass Gainer, which has a different carb profile, this one is heavier on the carbs. If you can handle the volume and the carb load fits your training, the all-whey protein and creatine provide a straightforward formula. For lifters who want a lower-carb mass gainer or a thinner shake, this might feel like too much.
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Dymatize Super Mass Gainer
What We Like
- 52g protein per serving for muscle growth
- Fast- and slow-digesting whey and casein
- Includes 1g creatine for power support
- 14 essential vitamins and minerals added
Trade-offs
- 1280 calories per serving is very high
- Only 8 servings per container
With 52 grams of protein per serving, Dymatize Super Mass Gainer packs a serious punch for anyone trying to add size. That’s a full meal’s worth of protein in one shake, and because it blends fast-digesting whey with slow-digesting casein, your muscles get a steady stream of building blocks for hours after you drink it. The added 1 gram of creatine per scoop is a nice bonus if you want to push a little harder in the gym without buying a separate supplement. This is the kind of formula that makes sense when your appetite struggles to keep up with your goals and you need a calorie-dense, protein-heavy option to fill the gap.
At 1280 calories and 245 grams of carbohydrates per serving, this is not a light sipper. You will feel full, maybe uncomfortably so, and the carb load might not fit everyone’s daily macros. If you are a hard gainer who needs maximum calories and protein in one go, this fits. If you want something easier to digest or lower in carbs, you might look elsewhere.
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Optimum Nutrition Serious Mass
What We Like
- 1,200+ calories per serving
- 50g blended protein for muscle repair
- Includes creatine, glutamine, and BCAAs
Trade-offs
- Not suitable for low-carb diets (over 250g carbs per serving)
- Over 1,200 calories per serving is excessive for most people
With over 1,200 calories and 50 grams of protein per serving, this mass gainer is built for those who struggle to eat enough during bulking phases. The addition of creatine, glutamine, and BCAAs means you’re getting more than just calories, it’s a blend designed to support muscle repair and recovery after heavy training. Optimum Nutrition backs it with a reputation for quality control, so you can feel confident mixing this into your routine. It suits anyone who wants a straightforward, high-calorie shake that doesn’t skimp on protein or extras.
The carbohydrate load is significant: over 250 grams per serving is a lot for anyone watching their carb intake or managing blood sugar. Compared to Rule 1 Proteins Mass Gainer, which uses a complex carb blend and all-whey protein, Serious Mass leans on a higher carb count and a mixed protein source. If you prefer a leaner carb profile or a pure whey base, the Rule 1 option might fit better. But if your goal is simple, dense calories with added muscle-support nutrients, this classic mass gainer delivers without fuss.
NAKED Mass Natural Weight Gainer
What We Like
- NSF Certified for purity and safety
- No artificial sweeteners, flavors, or colors
- Gluten-free organic tapioca maltodextrin carbs
Trade-offs
- Unflavored, so taste depends on mix-ins
- 8-pound tub requires counter space to store
At 1,250 calories and 50 grams of protein in each serving, this is a serious option for anyone who struggles to gain weight. What sets it apart is the ingredient list: just three components. Naked Whey, Naked Casein, and organic maltodextrin. No artificial sweeteners, no soy, no gluten, and no mystery fillers. That profile makes it a smart pick if you want to gain weight without loading up on processed junk or digestive irritants. The blend of fast-release grass-fed whey and slow-digesting micellar casein is designed to keep protein synthesis up, which supports muscle building after heavy training.
Unflavored powder means you’re the mixologist. If you want a shake that tastes great straight out of the tub, something like Dymatize Super Mass Gainer comes pre-flavored and sweetened. But if you prefer control over what goes into your body and don’t mind blending in fruit, peanut butter, or cocoa, Naked Mass delivers exactly what it says on the label: high-calorie nutrition from three ingredients. It’s a straightforward tool for hardgainers who value ingredient transparency over convenience.
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Optimum Nutrition Gold Standard Pro Gainer
What We Like
- 60g protein per serving for muscle support
- Less than 8g sugar per serving
- 650 calories per serving for weight gain
- Includes vitamins and minerals
Trade-offs
- 10.2 lb tub is large for travel or small kitchens
- Not suitable for low-carb or keto diets
With 60 grams of protein and under 8 grams of sugar per serving, this mass gainer focuses on delivering quality protein without the sugar spike you often get from bulkier powders. The 650-calorie count hits a sweet spot for anyone who wants steady weight gain without the sluggish feeling that comes from downing very high calorie shakes. It’s a practical fit if your goal is adding muscle mass while keeping your carb and sugar intake in check.
The 80-plus grams of carbohydrates per serving still add up, so if you’re sensitive to carb-heavy shakes or prefer a leaner profile, other mass gainers on the market offer different calorie and carb ratios. But for someone who wants a straightforward, higher-protein, lower-sugar option that still packs enough calories to fuel growth, this one earns its place in your routine without the sugar crash.
MuscleMeds CARNIVOR Mass Gainer
What We Like
- Lactose-free beef protein isolate
- Zero fat and zero sugar
- Halal certified
- 50 g protein per serving
Trade-offs
- Only 700 calories per serving, lower than many mass gainers
- Beef protein isolate unsuitable for vegetarians or vegans
With 50 grams of beef protein isolate per serving and zero fat or sugar, this mass gainer provides a clean protein source that skips the dairy entirely. That makes it a smart fit if your stomach rebels against whey or casein, or if you simply want a lactose-free option that still packs 50 grams of protein. The 700-plus calories and 125 grams of carbs provide a solid foundation for muscle gain.
The trade-off is calorie density. Compared to Dymatize Super Mass Gainer’s 1,280 calories per serving, this product offers fewer calories per serving. But if your priority is a clean, dairy-free protein that digests easily and still supports mass-building, this beef isolate approach is worth considering.
Transparent Labs Mass Gainer
What We Like
- Grass-fed whey protein source
- 53g protein per serving
- Includes 3g creatine monohydrate
- No artificial sweeteners or fillers
Trade-offs
- Contains 3g creatine per serving.
The grass-fed whey delivers 53g of complete protein alongside 110g of slow-digesting carbs from oat flour and sweet potato powder, plus a full 3g dose of creatine monohydrate. That makes it a smart fit if you want to add mass without flooding your system with processed sugars or artificial junk, the ingredient list is refreshingly short and third-party tested for purity.
For someone who struggles to eat enough, that extra scoop can feel like a chore. But if you prioritize ingredient quality and want the grass-fed protein and added creatine in one mix, this is the cleaner option that still gets the job done.
Forzagen Lean Gainer Premium Mass Builder
What We Like
- 1260 calories per serving
- 50g protein from natural sources
- Carbs from oats, yams, sweet potatoes
- Dutch Chocolate and Creamy Vanilla options
Trade-offs
- 4-scoop serving size per shake
- Only 16+ servings per 12-pound container
A single serving of this powder packs 1260 calories, 50 grams of protein, and 250 grams of carbohydrates sourced from oats, yams, and sweet potatoes. So you get serious fuel for bulking without relying on cheap fillers. That makes it a strong fit for anyone who has difficulty eating enough throughout the day and wants a dense, convenient shake to tip the scale toward muscle gain. The natural carb sources also help keep energy steady during tough training sessions, which matters when you are pushing for measurable size and strength.
A four-scoop shake means a lot of powder to mix and drink. Compared to Dymatize Super Mass Gainer, which offers 1280 calories and 245 grams of carbohydrates per serving, Forzagen gives you slightly more carbs and a similar calorie punch, but both require commitment to finish a full shake. If you can handle the volume, this is a straightforward way to support serious bulking.
Mutant Mass Extreme Gainer
What We Like
- Whole food ingredients like oats and sweet potato
- 1,100 calories and 56 g protein per serving
- Blend of whey isolate, concentrate, and casein
- 12.2 g BCAAs for muscle support
Trade-offs
- Only one flavor option: triple chocolate
With 1,100 calories and 56 grams of protein in each serving, this gainer packs enough fuel to support serious weight gain without relying on processed fillers. The whole food ingredient list, barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed, and sunflower oil, means you’re getting complex carbs and healthy fats alongside your protein, not just cheap sugars. It is a smart pick if you want your mass gainer to double as real food, especially for someone who has trouble eating enough whole meals during the day.
Delivering 1,100 calories and 56 grams of protein in each serving, this gainer packs serious macro density into a single scoop, so you can hit your daily targets without downing multiple shakes. The triple chocolate flavor is the only option, but reviewers find it mixes well with milk or water for a rich taste. Whole-food ingredients like barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed, and sunflower oil mean the calories come from recognizable sources rather than just sugar and oils.
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BSN True-Mass Weight Gainer
What We Like
- 690 calories per serving for mass
- 2:1 carb-to-protein ratio
- MCT fats for extra nutrition
Trade-offs
- Only 16 servings per container
- Contains multiple dairy proteins, not suitable for lactose-sensitive users
A blend of whey and casein proteins supports recovery immediately after a workout and continues feeding muscles for hours afterward. This dual-action approach is particularly useful for anyone who finds it difficult to consume enough calories through food alone. With 50 grams of protein sourced from whey concentrate, calcium caseinate, milk protein isolate, whey isolate, micellar casein, hydrolyzed whey, and egg whites, the formula provides a broad amino acid profile. The 2:1 ratio of carbohydrates to protein delivers a high-quality mix designed to support mass-gaining goals, while medium-chain triglycerides (MCTs) add nutritional value and contribute to the shake’s smooth, milkshake-like consistency.
The trade-off here is that 690 calories per serving is moderate compared to some other options in this guide. Rule 1 Proteins Mass Gainer, for example, packs over 1,220 calories per serving. So if you need to pack on weight fast and have a high daily calorie target, you might find yourself blending two scoops of True-Mass or adding extra ingredients. That said, the variety of protein sources and the flavor from BSN’s technology make each shake easy to drink. It’s a good option for steady, quality-driven gains.
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How We Evaluated Proteins To Gain Weight And Muscle Mass
Our research began with a close look at manufacturer specifications and nutrition labels for each mass gainer. We cross-referenced these details with patterns found in expert comparisons and thousands of owner reviews to understand what actually works for hardgainers.
The four criteria that mattered most were calorie density per serving, protein quality and quantity, carbohydrate source and sugar content, and ingredient transparency. A mass gainer with 1,200 calories is useless if half of them come from cheap maltodextrin and sugar, which is why we paid close attention to carb complexity and artificial additive counts.
A research-led evaluation like this can tell you what the label says, but it cannot replace personal tolerance testing. That is why we prioritized products with multiple protein sources and clear allergen labeling, so you can make an informed choice based on your own dietary needs.
What To Look For In Proteins To Gain Weight And Muscle Mass
Choosing a mass gainer comes down to matching your daily calorie surplus, your protein goals, and your stomach’s tolerance. Here are the key factors to weigh before you buy.
A 40-60 word snippet-style summary of the key buying criteria.
Calories Per Serving
The whole point of a mass gainer is to deliver a calorie surplus without having to eat five extra meals. Look for shakes that offer between several hundred and over 1,200 calories per serving, depending on how aggressive your bulk is. Remember that a high-calorie shake is a serious commitment; some people find it easier to split into two smaller drinks.
Protein Type and Quantity
The protein source matters. Whey isolate digests fast, casein digests slow, and blends give you both. A mass gainer should have at least 40g of protein per serving to meaningfully support muscle repair. If you have a sensitive stomach, look for lactose-free options like the MuscleMeds CARNIVOR Mass Gainer, which uses beef protein isolate.
Carbohydrate Profile and Sugar
Not all carbs are created equal. The best mass gainers use complex carbs from oats, sweet potatoes, or tapioca maltodextrin rather than simple sugars that spike your blood sugar. Check the label for added sugar, anything over 15g per serving is worth a second look unless you are okay with the extra sweetness.
- Look for a protein-to-carb ratio that matches your goals (2:1 or 1:1 are common)
- Check the serving size: some brands require 4 scoops for a full serving
- See if the product includes digestive enzymes to reduce bloating
A mass gainer should feel like a tool, not a test of willpower, if you dread drinking it, you won’t stick with it.
Proteins To Gain Weight And Muscle Mass Compared
The table below compares our top picks across the specs that matter most, so you can see at a glance which mass gainer fits your calorie and protein targets.
| Product | Calories per serving | Protein per serving | Carbohydrates per serving | Key Additions |
|---|---|---|---|---|
| Rule 1 Proteins Mass Gainer | 1,220+ | 40g all-whey | 250g+ | Pure creatine monohydrate |
| Dymatize Super Mass Gainer | 1280 | 52g | 245g | 1g Creatine |
| Optimum Nutrition Serious Mass | 1,200+ | 50g | 250g+ | Creatine, Glutamine, BCAAs |
| NAKED Mass Natural Weight Gainer | 1,250 | 50g | 252g | NSF Certified |
| Optimum Nutrition Gold Standard Pro Gainer | 650 | 60g | 80g+ | Vitamins & Minerals |
| MuscleMeds CARNIVOR Mass Gainer | Over 700 | 50 g beef protein isolate | 125 g | 0 Fat, 0 Sugar |
| Transparent Labs Mass Gainer | 770 | 53g grass-fed whey | 110g | 3g Creatine Monohydrate |
| Forzagen Lean Gainer Premium Mass Builder | 1260 | 50g | 250g | N/A |
| Mutant Mass Extreme Gainer | 1,100 | 56 g | N/A | 12.2 g BCAAs |
| BSN True-Mass Weight Gainer | 690 | 50g | N/A | MCTs included |
Frequently Asked Questions
How many calories should a mass gainer have for weight gain?
Most mass gainers range from several hundred to over 1,200 calories per serving. If you are a hardgainer who struggles to eat enough, a shake on the higher end can help you hit your daily surplus. For lighter maintenance or lean bulking, a lower-calorie option like the BSN True-Mass Weight Gainer is a better fit.
Can you use mass gainers if you are lactose intolerant?
Yes, but you have to choose carefully. The MuscleMeds CARNIVOR Mass Gainer uses beef protein isolate and is completely lactose-free, making it a good choice for dairy-sensitive lifters. Many standard mass gainers rely on whey and casein, which contain lactose, so check the label or look for a dedicated lactose-free formula.
What is the difference between a mass gainer and regular protein powder?
Mass gainers are designed for calorie surplus, so they pack significantly more carbs and calories per serving than standard whey or plant protein powders. A typical protein shake might have a modest number of calories, while a mass gainer can deliver a thousand or more. If you already eat enough food, regular protein is likely sufficient.
How do you mix a mass gainer so it tastes good?
Start with 18-20 oz of cold liquid and add your powder gradually while shaking or blending. A blender bottle works, but an electric blender gives a smoother texture. Many people add a handful of ice or a splash of milk to improve taste and consistency without adding too many extra calories.
Is it safe to take creatine in a mass gainer every day?
Yes, many mass gainers like the Rule 1 Proteins Mass Gainer include creatine monohydrate as part of the formula. The standard dose is around 3-5 grams per day, which has been well studied for strength and muscle gains. Just be aware that if you take a separate creatine supplement, you may be doubling up, check the label.
The Bottom Line
The Rule 1 Proteins Mass Gainer is the best overall choice for lifters who want a high-calorie, carb-heavy shake with whey protein and added creatine to support aggressive muscle and weight gain. It delivers everything a hardgainer needs in one scoop, without forcing you to blend multiple supplements separately.
If your priority is maximum protein per serving, the Dymatize Super Mass Gainer offers 52g with a fast-and-slow digesting blend. For those who want to avoid artificial ingredients, the NAKED Mass Natural Weight Gainer is the cleanest option on our list, though it requires a bit more effort to flavor.
The single most important thing is consistency. A mass gainer only works if you actually drink it every day, so choose the one that tastes good to you and sits well in your stomach. Everything else is secondary.





