Serious Mass by Optimum Nutrition Size:12LB - 5.45KG R1 Protein is protein with

R1 Protein is protein with a capital-P

or your favorite smoothie

Take 1 capsule daily with food and drink plenty of water

And if you are having issues with cravings or overeating

Serious Mass by Optimum Nutrition Size:12LB - 5.45KG R1 Protein is protein withOptimum Nutrition Serious Mass: the ULTIMATE in weight gain formulas. Optimum Nutrition Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted. Super high in carbohydrates and Calories Optimum Nutrition Serious Mass is designed to help trainers with fast metabolisms obtain the calories they need to gain weight. 1,250 Calories per serve. 50g of blended protein. Over 250g of Carbohydrates