10 Best Mass Gainers 2026 in the United States

Dymatize Super Mass Gainer is designed for people looking to increase muscle mass and overall calories efficiently. Each serving packs a high 1,280 calories, making it ideal for those who struggle to eat enough through regular meals. It offers a solid 52 grams of protein from a mix of whey, isolate, and casein, which helps with both quick and sustained muscle recovery. The carb content is quite high at 245 grams, which is good for energy and replenishing glycogen but might be more than needed for those watching their sugar intake. With 1 gram of creatine added, it also supports strength and power during workouts, and the inclusion of 14 vitamins and minerals is a nice bonus for overall health.

The rich chocolate flavor is generally well-liked and it mixes easily, making it convenient to blend into shakes or recipes like pancakes and protein bars. However, the container only offers 16 servings, which could feel pricey given the size and frequency of use typical for mass gainers. This mass gainer suits active adults seriously focused on muscle growth and who need a substantial calorie boost, but casual users or those with lighter calorie needs might find it too dense.

Naked Mass is a natural weight gainer protein powder designed to help individuals increase their calorie and protein intake efficiently. With 1,250 calories per serving, it is ideal for those struggling to gain weight. Each serving contains 50g of protein and 252g of carbohydrates, highlighting its high-calorie content essential for bulking up. The protein blend includes fast-release whey and slow-digesting casein, offering a sustained protein release that supports muscle synthesis over time.

The product is free from artificial sweeteners, flavors, and colors, making it a clean option with only three ingredients: Naked Whey, Naked Casein, and organic maltodextrin from tapioca. It's also non-GMO, gluten-free, and soy-free, catering to individuals with dietary restrictions. Additionally, it includes 11.5g of BCAAs per serving, which are crucial for muscle recovery and growth. Its unflavored nature makes it versatile for mixing into various shakes and recipes without altering taste.

The lack of added digestive enzymes might be a downside for those who experience digestive issues with high-calorie supplements. Additionally, with only 11 servings per 8-pound container, it may not be the most economical option for long-term use. Despite these drawbacks, Naked Mass stands out for its clean ingredient profile and high nutritional value, making it suitable for individuals focused on weight gain and muscle building.

The Optimum Nutrition Gold Standard Pro Gainer is designed to help adults looking to gain muscle and weight by delivering a high-calorie and nutrient-rich formula. Each serving provides 650 calories, which supports mass gain without being excessive. With 60 grams of protein per serving, it offers a strong protein boost to aid muscle growth and recovery.

The carbohydrate content is over 80 grams, which helps replenish energy levels, making it suitable for those with high activity or intense workout routines. Fat content is relatively low, and sugar stays under 8 grams per serving, balancing calorie intake without too much added sugar. The double chocolate flavor is generally well-liked for taste, and Optimum Nutrition products are known for good mixability, so it should blend smoothly with milk or water.

This gainer suits people who want a convenient way to increase calorie and protein intake for muscle building but might be less ideal for those seeking lower-carb options. Its large 10-pound size offers good value for regular users aiming for serious weight gain.