🚀 Elevate Your Mass Game with Serious Gains! Customize your shake with fruits, nut butters, and more for a delicious twist. Packed with over 1,200 calories per serving to supercharge your weight gain journey. Over 250 grams of carbohydrates to fuel your workouts and daily activities. 50 grams of blended protein to support muscle growth and recovery. Infused with Vitamin C and Zinc for enhanced immune support. Versatile flavors 50g protein 1200+ calories Optimum Nutrition Serious Mass is a high-calorie weight gainer protein powder designed to help you achieve your weight gain goals. Each serving delivers over 1,200 calories, 50 grams of protein, and 250 grams of carbohydrates, along with essential vitamins and minerals for immune support. Perfect for blending with your favorite ingredients, this versatile formula is your go-to solution for serious muscle growth.