10 Best Weight Gain Supplements 2025 in the United States

Optimum Nutrition Serious Mass Weight Gainer Protein Powder is designed for those looking to increase their caloric intake and build muscle mass. Featuring 1,250 calories per 2-scoop serving, it provides a substantial caloric boost. Each serving also packs an impressive 50 grams of protein and over 250 grams of carbohydrates, ideal for muscle recovery and energy replenishment. Additionally, the product includes 25 vitamins and minerals, plus creatine and glutamine, to support overall health and muscle function.

The high calorie and carbohydrate content might not be suitable for those with dietary restrictions or who are not engaged in intense physical activity. The vanilla flavor is generally well-received, and the powder's mixability is enhanced by using an electric blender, allowing for customization with fruits and nuts. A potential drawback is that packaging can vary, and exposure to heat can damage the product, requiring careful handling.

This supplement is a strong option for athletes and bodybuilders needing a high-calorie, high-protein supplement to aid weight gain and muscle development.

Optimum Nutrition Serious Mass is a weight-gain supplement designed to help individuals increase their calorie intake and gain weight. It offers a high caloric content with over 1,200 calories per 2-scoop serving, which is excellent for those looking to add mass. The product also provides 50 grams of protein per serving, which supports muscle growth and recovery. Additionally, it includes over 250 grams of carbohydrates, which are essential for energy and replenishing glycogen stores post-workout.

The inclusion of 22 vitamins and minerals, such as Vitamin C, Vitamin D, and Zinc, helps support health and immune function. The product is caffeine-free, making it suitable for those who are sensitive to stimulants. Mixing Serious Mass with an electric blender allows for versatility, as you can add fruits, peanut butter, and other calorie-dense foods to boost your intake further.

However, there are only 8 servings per container, which may require frequent purchases for regular use. The vanilla flavor is generally well-received, but some users may find it too sweet or artificial. Additionally, the high carbohydrate content may not be suitable for those with dietary restrictions or certain health conditions. Despite these drawbacks, Serious Mass is a solid option for individuals seeking a comprehensive weight-gain supplement, especially those who struggle to meet their caloric needs through regular meals.

Dymatize Super Mass Gainer Protein Powder is designed for individuals looking to quickly gain weight and muscle mass. Each serving packs a hefty 1280 calories and 245 grams of carbohydrates, making it easier for hard gainers to increase their calorie intake. The product also offers 52 grams of protein, which consists of both fast and slow-digesting proteins to keep muscles fueled throughout the day.

Additionally, it contains 10.7 grams of BCAAs, including 5.1 grams of Leucine, to support muscle protein synthesis and recovery. The inclusion of 14 vitamins and minerals helps aid muscle recovery, making it a well-rounded supplement for weight gain and muscle building. The powder is gluten-free and comes in a 6-pound pack with a vanilla flavor.

The product has only 8 servings per container, which might require frequent repurchases for those using it regularly. Also, the high-calorie content might not be suitable for those who gain weight easily. Dymatize Super Mass Gainer is a solid choice for those struggling to gain weight and muscle, thanks to its high caloric and protein content, as well as its digestibility and flavor.