10 Best Supplements To Gain Weight And Muscle Mass in 2026

A single serving packs 1,280 calories and 52 grams of protein, which is a serious boost if you struggle to eat enough to build muscle. That calorie density, combined with a mix of fast-digesting whey and slow-digesting casein, means your body gets a steady stream of fuel for hours after you drink it. This makes it a practical choice for anyone who wants to add size without having to prep five meals a day. The added creatine and vitamins are nice bonuses that support strength and recovery without extra scoops.

Each container holds only eight servings, so if you use it daily you’ll be ordering more frequently than with some other options. Optimum Nutrition Serious Mass also comes in a 6 lb tub, but its exact serving count isn’t listed here. Transparent Labs Mass Gainer provides 53 grams of protein and 110 grams of carbs per serving, though its calorie density per serving isn’t specified. For a calorie-dense formula with a mix of fast- and slow-digesting proteins, this product delivers as advertised.

Over 1,200 calories per two-scoop serving makes this a straightforward way to push past a weight plateau when meals alone aren’t cutting it. That calorie load comes with 50 grams of blended protein, plus creatine, glutamine, and BCAAs built right in, so you’re not just adding mass but supporting muscle repair and recovery after heavy training. It’s a good fit for anyone in a serious bulking phase who wants a single shake that covers a lot of nutritional ground without needing to stack multiple supplements.

The 250 grams of carbs per serving is a lot of fuel, which works great for hardgainers and high-volume lifters but might feel excessive if you’re more moderate in your calorie surplus. Compared to Dymatize Super Mass Gainer, which offers a similar calorie count with slightly less protein per serving, Serious Mass leans heavier on the carb side, making it better suited for those who prioritize energy and glycogen refill over a leaner macro split. The vanilla flavor is easy to customize with milk, fruit, or peanut butter, so you can tweak taste and calories to your liking.

With 1,250 calories, 50 grams of protein, and just three ingredients per serving, this is a straightforward choice for anyone who wants to know exactly what they’re putting in their body. Naked Mass uses only Naked Whey, Naked Casein, and organic maltodextrin, skipping artificial sweeteners, flavors, and colors. That simple ingredient list means you’re getting a clean calorie surplus without the additives found in many other mass gainers.

The unflavored powder does require some creativity, you’ll want to blend it with milk, fruit, or peanut butter to improve the taste, while a product like Dymatize Super Mass Gainer offers a gourmet vanilla flavor that may be more palatable straight from the tub. With 252 grams of carbs per serving, this is a high-energy option that fits a bulking diet. For someone who values ingredient transparency and doesn’t mind mixing their own shakes, this is a honest, no-fuss mass gainer.

With 1,100 calories and 56 grams of protein per serving, this is a dense mass gainer built for anyone who struggles to eat enough whole food to pack on weight. The protein blend uses whey isolate, concentrate, and casein, so you get both fast and slow-digesting protein throughout the day. What sets it apart is the whole food ingredient list, barley, rolled oats, sweet potato, avocado, coconut oil, flaxseed, pumpkin seed, and sunflower oil, meaning you’re getting more than just processed powders. That makes it a smart pick if you want a gainer that feels closer to a real meal.

The trade-off is portion control: each serving delivers a hefty carb load, which isn’t ideal if you’re watching your carb intake or prefer a leaner gainer. Compared to Optimum Nutrition Serious Mass, which relies more on maltodextrin, this formula leans on whole food carbs and fats for a different energy profile. You also get only 16 servings per pouch, so if you’re using it daily, you’ll be reordering more often than some larger tubs.

Sixty grams of protein per serving is the standout number here, that’s more than most mass gainers deliver in a single scoop, and it means you’re getting serious muscle-building support without having to down multiple shakes a day. With 650 calories and over 80 grams of carbs, it’s designed for someone who wants steady, manageable weight gain rather than an extreme calorie bomb. The sugar stays under 8 grams per serving, so you’re not loading up on empty sweetness just to hit your numbers. This is a strong fit if you’re looking for a high-protein formula that still feels like a reasonable addition to your daily routine, not a gut-busting challenge.

At 650 calories per serving, this is a moderate amount compared to some other mass gainers on the market. Dymatize Super Mass Gainer, for instance, packs 1,280 calories per serving. That means if you have a very high calorie target, you might need two servings or extra add-ins to get where you want. But for most people aiming to add quality mass without the bloated feeling that comes with ultra-high-calorie blends, this Gold Standard Pro Gainer hits a practical sweet spot. The 10.2-pound tub is bulky, but the protein-to-calorie ratio makes it worth the shelf space.

The trade-off is serving count: 16 scoops per tub means you’ll reorder more often than with a 50-serving bag. At 5.8 pounds, the container is heavier than Optimum Nutrition Serious Mass at 2.0 pounds, so it takes up more shelf space. If you want a controlled calorie intake per shake without going overboard, this size keeps your portions predictable.

With 770 calories, 53 grams of grass-fed whey protein, and 110 grams of complex carbs per serving, this mass gainer is built for anyone serious about packing on lean mass without relying on artificial junk. The grass-fed whey gives you a complete amino acid profile to support muscle repair, while the slow-digesting carbs keep your energy steady through workouts. Plus, the added 3 grams of creatine monohydrate means you’re getting a performance boost built right in, no need for a separate scoop.

With 770 calories per serving, this is a high intake for some, and with only 15 servings per container, you’ll go through it faster than some other mass gainers. But if you value clean ingredients, no artificial sweeteners, colors, or preservatives, and want a formula that combines high-quality protein, complex carbs, and creatine in one shake, this is the one to reach for.

With 1,220-plus calories and 40 grams of all-whey protein per serving, this mass gainer gives you a dense, fast-digesting protein source to fuel muscle repair and growth. The 6:1 carb-to-protein ratio is designed for people who struggle to eat enough, those extra 250 grams of carbs help replenish glycogen stores and push your daily calorie total well past maintenance. If you’re the type who finishes a workout and can barely stomach solid food, this shake makes it easy to get the fuel you need without forcing down another chicken breast.

The biggest trade-off is the carb load: over 250 grams per serving come mostly from complex sources, which fuels heavy training but works against anyone chasing lean gains. The all-whey protein delivers 9 grams of naturally occurring BCAAs per serving, so it absorbs quickly for post-workout recovery. Compared to Dymatize Super Mass Gainer’s 52 grams of protein per serving, this formula uses a different protein source, all-whey versus whey plus casein, and a different carb profile, so the choice depends on whether you prioritize fast absorption or a slower release.

The 12-pound tub gives you over 16 servings, so it lasts through weeks of steady training. It suits anyone who struggles to eat enough whole foods to keep weight climbing and wants a shake that actually delivers on its calorie promise without a ton of artificial junk.

Four scoops per serving means you need a big shaker and a stomach ready for that much volume. If you prefer smaller, more frequent shakes, Dymatize Super Mass Gainer offers 1280 calories with a slightly lower scoop count per serving, but Forzagen’s natural carb sources and straightforward formula make it a strong pick for those who want a clean bulk without guessing what’s inside.

At 1350 calories per serving, this mass gainer delivers a high calorie count that simplifies the math for anyone trying to pile on weight quickly without blending multiple shakes. The 50g protein blend is labeled as fast and sustained release, so it provides both immediate and longer-lasting amino acid delivery. It also includes 11g of BCAAs with leucine, which supports muscle protein synthesis. For hardgainers who struggle to eat enough throughout the day, this is a straightforward calorie bomb.

You only get eight servings per container, so you will be reordering more often than with larger tubs. The 250g of carbs per serving is on the higher end, which works great for hardgainers or post-workout refueling but might feel excessive if you are less active. If your main priority is maximum calories per serving, this is the one to grab.