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If you are a hardgainer who has eaten everything in sight and still cannot move the scale, the fix is usually not more food — it is more calories per sip. A mass gainer shake puts a full meal’s worth of energy into a shaker bottle you can drink in minutes, even on days when your appetite has checked out. This guide covers seven real options, from powder tubs you blend yourself to ready-to-drink bottles that need no prep at all, so you can pick the one that matches how you actually eat.
This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
The category splits into two clear camps: powders that deliver serious calories per serving and bottled drinks that trade peak calories for convenience. The picks below are sorted by what each one actually solves, and the winner is the crowd favorite — 4.5+ stars across 1,300+ ratings — because it balances taste, protein and digestibility better than anything else here. Read on for the protein drinks for weight gain that fit your routine best.
Top Picks
How To Choose The Best Protein Drinks for Weight Gain
Most people start by hunting for the highest protein number on the label. That is the wrong dial to turn. When the goal is adding body weight, calories per serving is the figure that actually moves the scale, and protein is the passenger rather than the driver. A shake with 50g of protein and 700 calories will do more for a hardgainer than a lean whey shake with 25g of protein and 120 calories.
Calories and carbohydrates beat protein for scale weight
A mass gainer works by making a calorie surplus easy to hit. Look at the calorie figure per serving first — the numbers in this category range from a few hundred up to 1,290 per serving. Then look at carbohydrates, because carbs are where most of those calories come from. Some of these formulas carry over 250g of carbs per serving, which is more than many people eat across an entire day.
Check the serving count before you commit to a tub
A big container does not always mean many servings. Large scoops mean each tub empties faster than you expect. One option here delivers nine servings per container, while others run in the single digits. If you plan to drink two shakes a day, a low serving count means you will be reordering sooner than you think.
Decide whether you will blend or shake
Gainers with a lot of powder per serving tend to clump in a basic shaker bottle. Several of the formulas below are best mixed in a blender, while others dissolve in a shaker in under a minute. Be honest about your morning routine — if you will not wash a blender jar at 6 a.m., pick a formula that shakes clean or a bottled drink instead.
Side-by-Side Comparison
| Model | Best For | Calories Per Serving | Protein Per Serving | Carbs Per Serving | Amazon |
|---|---|---|---|---|---|
| Optimum Nutrition Gold Standard Pro Gainer★ Best Overall | Best overall balance | 650 | 60g | 80g+ | Amazon |
| Rule 1 Proteins Mass GainerBiggest Calorie Hit | Maximum calories per shake | 1,220 | 40g | 250g+ | Amazon |
| Dymatize Super Mass Gainer | Dessert-style flavor | 1,290 | 52g | 248g | Amazon |
| Nutricost Mass Gainer Powder | Gluten-free bulk | — | 50g | — | Amazon |
| MuscleMeds CARNIVOR Mass | Lactose-free beef protein | 700+ | 50g | 125g | Amazon |
| Optimum Nutrition Serious Mass | Long-term bulking staple | 1,200+ | 50g | 250g+ | Amazon |
| BOOST Very High Calorie | No-prep ready to drink | 530 | 22g | — | Amazon |
Detailed Reviews
1. Optimum Nutrition Gold Standard Pro Gainer 5 LB
Our pick — 4.5+★ from 1,000+ verified ratings; the strongest balance of quality and price.
The gainer that puts protein first and still clears 650 calories a serving
Sixty grams of protein per serving is the highest in this group, and it arrives with 650 calories and more than 80g of carbohydrates. That balance matters because it feeds muscle without turning every shake into a sugar bomb. Compare it to the Rule 1 tub, which stacks 250g+ of carbs against just 40g of protein — a 6:1 carb-to-protein ratio aimed at raw scale weight rather than recovery. If you train hard and want the calories to build tissue rather than just padding, this is the ratio to start with.
The vanilla custard flavor is what wins people over most, and it earns that reputation. The texture is described as mellow rather than gritty, and it stays drinkable in a shaker in under a minute instead of frothing up in a blender. Buyers report real results too — as one put it, it “tastes great” and delivered a 5 lb gain in 6 days on a single shake daily. Another long-term user ran two servings a day and moved from 145 to 187 lbs. Less than 8g of sugar per serving keeps it from wrecking your appetite for actual meals.
The catch is the serving count and the price per tub. A half scoop still gives you 30g of a multi-source protein blend, which is a smart way to stretch it, but the container empties faster than the size suggests. It is also not a meal replacement — the people who got the best results paired it with three real meals and heavy training. Treat it as an addition to your day, not a substitute for it.
What earns it first place
- 60g of protein per serving, the highest blend in this lineup
- 650 calories with more than 80g of carbs for a real surplus
- Under 8g of sugar, so it does not kill your appetite for meals
- Mixes in a shaker in under a minute with no gritty texture
Where it asks more of you
- Lower serving count per tub than the container size implies
- Needs real meals and training behind it to work
- A blender will froth it and slow down your drink
Reach for this if: you want the best all-round protein-to-calorie balance and will actually train for the gains.
Think twice if: you want the absolute maximum calories in a single shake — the Serious Mass and Super Mass tubs go higher.
2. Rule 1 Proteins Mass Gainer, Chocolate Fudge, 8 Servings
Over 1,220 calories and 250g of carbs in one shake for the true hardgainer
Here is a tub built for people who genuinely cannot eat enough. One serving carries 1,220 calories, more than 250g of carbohydrates and 40g of whey protein from three types of whey. That is roughly twice the calorie load of the Gold Standard Pro Gainer at 650, and it puts the carb-to-protein ratio at about 6:1 — the classic hardgainer formula. If the scale has not moved in months despite your best efforts, this is the kind of calorie density that changes the math.
The chocolate fudge does not taste like a compromise, either. It lands close to brownie batter, and buyers consistently note the absence of bloating and crashes — no blood sugar spike, no crash afterward. As one put it: “I’ve ordered over 4 times!!! Love it, no bloating, no aftertaste.” The creatine monohydrate is a bonus for strength work, and the 9 grams of naturally occurring BCAAs per serving come along for free with the whey.
Plan your servings, though. A tub holds only 8 servings, so at two shakes a day you are looking at four days of supply. It also clumps in a shaker bottle — this is a blender formula, and the people who love it all say the same thing. Mix it with 18 to 20 oz of water, milk or your favorite beverage, and keep it in rotation alongside a high-calorie diet rather than as a meal replacement.
Calorie math that matters: 1,220 calories against the Gold Standard’s 650 means one shake here does the work of nearly two of that one — a real difference when your appetite is the bottleneck.
Best for the plate-cleaner who still cannot gain: the highest calorie punch per shake in this whole group.
Not for shaker-bottle users: it needs a blender to avoid clumps.
3. Dymatize Super Mass Gainer 6 lb
Fruity Pebbles flavor with the highest calorie count of the entire lineup
One serving delivers 1,290 calories and 248g of carbs, the most of any shake here — just ahead of the Rule 1 tub at 1,220, and double the 650 calories in the Gold Standard Pro Gainer. That means one shake covers a big chunk of a hard-gainer day. The 52g protein is a blend of fast and slow digesting types, so it feeds you over a longer window than a single-source whey. You also get 10.7 grams of BCAAs (branched-chain amino acids, building blocks your muscles use), including 5.1g of leucine, plus 14 vitamins and minerals.
Flavor is where it gets fun. Fruity Pebbles is a genuinely unusual choice for a gainer, and the taste lands — people describe it as amazing with almond milk, and it does not feel like a chore to get down. Mix it carefully, though. Add the powder gradually rather than dumping it all in at once, or you will gum up the blender.
Two things to know before you buy. The scoop is bigger than most, so the canister empties faster than you would like. One buyer flagged that the giant container arrives only about three-quarters full — that is normal settling for a powder this dense, not a short-filled tub. Mixed exactly as printed, the texture runs thick, so add extra liquid until it suits you. The 6 lb tub is heavy on the shelf, but that is a fair trade for calorie density at this level.
The flavor trade: a fruit-cereal profile is a nice change from chocolate and vanilla, but the oversized scoop and thick mix mean you need to dial in your liquid ratio before you commit a whole tub.
Pick it for taste if chocolate bores you: the Fruity Pebbles flavor is a real standout in a category full of the same three flavors.
skip it if you refuse to measure: the bigger scoop and thick texture reward a little patience with the liquid ratio.
4. Nutricost Mass Gainer 7 LBS
A 7 lb gluten-free tub with 50g of protein, creatine and glutamine built in
You get 50g of protein per serving, the same league as the CARNIVOR and Serious Mass tubs. what separates it is what comes bundled with the whey protein concentrate (a fast-absorbing dairy protein): creatine monohydrate (a supplement linked to strength and muscle size) and L-glutamine (an amino acid used for recovery) are already in the formula, so you are not buying them as separate tubs. The 7 lb container is the largest single bag here. It is also gluten free, non-GMO, and tested by independent ISO-accredited laboratories (labs checked against a recognized testing standard).
The Double Chocolate flavor earns steady praise, and people describe it as rich without tipping into overly sweet or chalky. It mixes fast with milk or water, and the taste holds up when you blend in a banana or a spoon of peanut butter — a handy way to add more calories without more powder. For a busy day where you just need to bank protein and calories, it does the job without fuss.
Two honest caveats. The flavor does not agree with everyone — one report calls it bitter even while noting a 20 lb gain over a few months on an unchanged diet, so taste is the gamble here rather than effectiveness. And several people mention stomach discomfort early on, which one resolved by splitting the serving across the day. The container only holds 9 servings, so a 7 lb bag moves faster than the size suggests. If your gut is sensitive, start with a smaller serving and build up.
Why the label stands out
- 50g of protein per serving with creatine and glutamine included
- Gluten free and made in an NSF certified, GMP-compliant facility
- Mixes fast in milk or water and handles added fruit well
- Independent lab testing on the finished product
What to watch
- Only 9 servings in a 7 lb container
- Reported stomach discomfort for some users at full servings
- Taste divides people — some find it bitter
Worth it if gluten is a hard line for you: you get 50g of protein plus creatine and glutamine in one scoop, without hunting down separate tubs.
Start with half a serving: if your stomach is easily upset, build up slowly rather than diving into a full scoop.
5. MuscleMeds CARNIVOR Mass Gainer 6 Pound
Beef protein isolate instead of whey — dairy-free gains that taste like a milkshake
If whey leaves you bloated, this is the alternative worth knowing about. The protein here is beef protein isolate (protein extracted from beef, not dairy), and the formula stays lactose free and halal certified. Each serving gives you 50g of protein, 125g of carbs and over 700 calories, with 0 fat and 0 sugar. That carb load sits between the leaner Gold Standard at 80g+ and the heavyweights at 250g+, a reasonable middle road if you want calories without a full-on dirty bulk.
The flavor is the headline. It tastes like thick chocolate milk with peanut butter, and it lands sweet rather than chemical — good enough that people treat it as a dessert. As one buyer shared: “Best-tasting protein, but also a bit pricey, so I use it more as a treat when switching from something a bit cheaper.” Blend it with ice for the best result, and it handles added peanut butter and banana without turning thin.
The trade-off is texture and cost. This one clumps even after a run through a blender, so if you cannot stand a lumpy shake, it is a real hurdle. The price per tub is on the higher end of the mid-range options here, which is why several people keep it as an occasional treat rather than their daily staple. For dairy-sensitive lifters who still want a shake that tastes like a treat, though, it earns its place.
The dairy-free angle: beef protein isolate means no lactose and no whey bloat, which is the whole reason some people choose to pay more for this tub than for a standard gainer.
The one to grab if dairy fights back: 50g of lactose-free beef protein isolate with a chocolate peanut butter flavor that drinks like a dessert.
Be ready to blend — and blend well: it is the clumpiest formula on this list.
6. Optimum Nutrition Serious Mass 6LB
The veteran bulker with over 1,200 calories and a mountain of reviews behind it
Over 1,200 calories, 50g of a blended protein and more than 250g of carbohydrates per two-scoop serving — this is the classic heavy bulker, and it is the most reviewed product on this page by a wide margin. That track record is the appeal. When thousands of hardgainers have already tried a formula and kept buying it, you are not the first person to test whether it works. It also packs 20+ essential vitamins and minerals, including vitamin C and zinc.
The people who succeed with it tend to be genuine hardgainers with fast metabolisms. One parent reported a son putting on 20 lbs of healthy mass, and the calories per serving made the surplus easy to hit. Another reported gaining 15 lbs while dropping body fat by 4% across a 3-month training block. The chocolate flavor blends well with peanut butter, bananas and oats, so it is easy to turn into a higher-calorie shake.
Do not treat it as a set-and-forget supplement. Full servings run thick and sweet, and mixing chocolate with vanilla and milk is a common fix for the sweetness. Without serious training behind it, the surplus can land as fat rather than muscle — that is simply how a calorie surplus works, not a flaw in the tub. Flexible dosing helps: half servings with fat-free milk let you dial the calories to your training load.
The case for the veteran
- Over 1,200 calories and 50g protein per two-scoop serving
- More than 250g of carbs with 20+ vitamins and minerals
- Maximum flexibility — blend in milk, fruit, peanut butter or oats
The honest fine print
- Full servings are thick and sweet, so dilute to taste
- Without hard training, the surplus can go to fat
- Mixed feedback on how easily it blends
For the lifter who wants proof at scale: this is the most-reviewed bulker here, and the results stories come from people whose metabolisms genuinely fought back.
Pair it with hard training: the calories do the work only if you give your muscles a reason to use them.
7. BOOST Very High Calorie Nutritional Drink 24 pk
530 calories in a small bottle you can drink with no blender, no scoop, no cleanup
Not everyone wants to measure powder at 6 a.m. This is a ready-to-drink shake that delivers 530 calories and 22g of high-quality protein in an 8 fl oz bottle, plus 26 vitamins and minerals that cover immune, brain and bone support. Nothing here outguns a powder on raw calories — it sits well below the 1,200-plus tubs. What it wins on is convenience: open, drink, done. The 24-pack variety brings vanilla, chocolate and strawberry in one box.
The flavor is what makes it sustainable. Strawberry comes across like strawberry milk and vanilla like melted ice cream, so it goes down easily even for people with a small appetite. It suits anyone who needs extra calories but cannot face a full plate — one buyer recovering from a hospital stay noted BOOST had the highest calorie and protein count of the options tried and has already put weight back on. The smaller bottle size also means you can pour it over ice if the thickness bothers you.
Two things to know. It is a drink, not a meal replacement, and drinking it too fast on an empty stomach can leave you feeling queasy — take it with or just after food. The bottle also leans on vegetable oil for a chunk of its calories, and some find the price high for a case. For anyone who values no-prep calories over peak calorie counts, it is a fair trade.
The convenience premium: a grab-and-go bottle gives you 530 calories, lower than any tub here. But it is the only pick that needs no shaker, no blender and no cleanup — which matters if prep is what stops you from drinking it.
Reach for it when convenience is the whole point: 530 calories and 22g of protein in a bottle you can drink anywhere, no prep required.
Keep it with food: sip it alongside a meal rather than on an empty stomach to avoid queasiness.
Know the Specs
Calories per Serving
Calories are the number that matters most when your goal is scale weight. A mass gainer can pack anywhere from a few hundred to more than 1,200 calories per serving, and the higher figures are what let a hardgainer reach a surplus without eating a whole extra meal. If your appetite is the bottleneck, lean toward the denser tubs; if you are adding a shake to an already-full plate, a moderate count fits better.
Carb-to-Protein Ratio
This is just carbs divided by protein, and it tells you the formula’s intent. A ratio near 6:1, like the Rule 1 and Serious Mass tubs, is built for raw mass — lots of energy per gram of protein. A leaner formula with more protein and fewer carbs, like the Gold Standard Pro Gainer at 60g protein and 80g+ carbs, is aimed at people who train hard and want tissue rather than just weight. Neither is better; they solve different problems.
Serving Size and Count
A large scoop is not a bargain if the tub only holds a handful of servings. Always divide your daily shakes by the servings per container to see how long one purchase really lasts. Scoop-to-liquid ratio also matters — a dense formula mixed exactly as printed can turn out thick, and adding more liquid usually fixes it.
Package Weight vs Powder Volume
A gainer bag or tub can feel under-filled when it arrives. Powders settle during shipping and leave a gap at the top, and a big empty space does not mean a short fill. Check the net weight on the label rather than judging by how full the container looks.
Common Questions
How many calories a day does a mass gainer shake replace?
Is a mass gainer better than plain whey for gaining weight?
How long does one tub or bag of mass gainer last?
Can I take a mass gainer without working out?
Why does my mass gainer clump in a shaker bottle?
Is a ready-to-drink shake as good as a powder for weight gain?
What does lactose-free mean in a protein drink?
Should I choose a gainer high in protein or high in carbs?
Why does my gainer container look only partly full?
The Bottom Line
For most people chasing weight gain, the protein drinks for weight gain winner is the Optimum Nutrition Gold Standard Pro Gainer. It pairs the highest protein blend here at 60g a serving with a solid 650 calories and under 8g of sugar — the balance that builds tissue rather than just padding the scale. If raw calories are your blocker, grab the Rule 1 Proteins Mass Gainer at 1,220 calories and 250g+ of carbs. And if you want zero prep, the BOOST Very High Calorie bottles put 530 calories in your hand with no scoop or blender needed. Whichever you pick, commit to one shake a day and give it a few consistent weeks — the scale moves through repetition, not the perfect tub.
How we choose
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of October 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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