Optimum Nutrition Serious Mass is a high-calorie nutritional supplement designed to support weight gain and muscle development. Manufactured by Optimum Nutrition, this product is formulated with a blend of protein, carbohydrates, and essential vitamins and minerals. The main active ingredients include a protein blend of whey protein concentrate, calcium caseinate, and egg albumin, providing a comprehensive amino acid profile to aid muscle recovery and growth.

Each serving of Serious Mass delivers 1,250 calories, making it an effective solution for individuals struggling to meet their caloric needs through regular meals alone. The supplement also contains 50 grams of protein and over 250 grams of carbohydrates, ensuring a balanced intake of macronutrients necessary for energy and muscle synthesis. Additionally, it includes creatine monohydrate, glutamine, and a range of vitamins and minerals to support overall health and performance.

Serious Mass is particularly beneficial for athletes, bodybuilders, and those with fast metabolisms who require additional calories to achieve their fitness goals. The product is available in various flavours, allowing users to enjoy a palatable and convenient way to increase their daily caloric intake. For optimal results, it is recommended to consume Serious Mass post-workout or between meals to maintain a consistent supply of nutrients. With its comprehensive formula, Optimum Nutrition Serious Mass provides a practical approach to supporting weight gain and muscle development in health-conscious individuals.