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• Fast-absorbing blend maximizes recovery and performance far superior to regular whey
With its powerful fat burning properties
intense and focused while you’re flying from set to set with veins fully dilated and muscles pumped to the extreme
For added support
ON Serious Mass 12lb Best Before 10/25-3/26 Category_Default Category_Shop By Brand_J - M_MFL • Fast-absorbing blend maximizes recoveryStrawberry Best Before 10 25 Banana Best Before January 2026 Strawberry Best Before March 2026 Every serve of Optimum Nutrition Serious Mass delivers over 1250 of nutrient loaded calories, that are blended with 50g of anabolic (muscle building) protein, from quality proteins such as ultra filtered whey protein concentrate, calcium caseinate, and egg albumen. Features:+ Serious Weight Gain Protein Formula+ 1,250 calories per serve+ 50g Protein High
