Optimum Nutrition Serious Mass

Optimum Nutrition Serious Mass is a high-calorie muscle building and weight gain formula, designed as a post-workout or between-meals shake.

• 1,250 calories per 2-scoop serving
• 50g protein per serving
• 252–254g carbohydrates per serving
• 3g Creatine Monohydrate per serving
• 25 vitamins & essential minerals

• Mix 2 scoops with 24 fl oz of cold water or milk using an electric blender.
• New users should start with a half serving (1 scoop).
• Use post-workout and/or between meals.

Package size (kg/lbs) is not stated anywhere in the current product data and needs to be confirmed. A detailed ingredient list is also not available — the figures above come from the product's stated nutrition summary. Nutrition information requires verification against the product label.