Food Supplement Optimum nutrition Serious Mass 2.73kg - Vanilla | Supplements

Ramping up size and strength isn’t about eating more. You want quality calories from staged proteins and rapidly assimilated carbohydrates to help replenish the glycogen burned up during all that heavy lifting. ON’s Serious Mass brings plenty of both with added glutamine, creatine and 25 vitamins and minerals – all without any added sugar. Size up the incredible potential these 1250 quality calories hold.