Optimum Nutrition (ON) Serious Mass Gainer

On Serious Mass, the ultimate weight-gainer supplement designed to help you pack on lean muscle mass and reach your size and strength goals. Developed by the trusted brand Optimum Nutrition, this powerhouse product is formulated to provide the calories, nutrients, and flavor you need to make serious gains.

On Serious Mass is a game-changer for those looking to increase their muscle mass and overall size. Packed with a high-calorie blend of carbohydrates, protein, and healthy fats, this supplement is specifically designed to fuel intense workouts and support muscle recovery. Each serving of On Serious Mass delivers a whopping dose of 1,250 calories, making it an ideal choice for hard gainers or anyone looking to bulk up.

Choose from a variety of mouthwatering flavors that will leave you craving more. Optimum Nutrition ensures that taste is never compromised, and each flavor is carefully crafted to satisfy your palate. Whether you prefer the rich and creamy Chocolate flavor, the smooth and indulgent Vanilla, or the decadent and refreshing Strawberry, On Serious Mass has a flavor option for everyone.

Not only does On Serious Mass provide an abundance of calories, but it also supplies essential nutrients to support your overall health and well-being. Each serving is loaded with 50 grams of high-quality protein, along with 25 vitamins and minerals to support optimal nutrition. This comprehensive formula helps ensure that your muscles have the necessary building blocks for growth and recovery.