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Serious Mass, Pack of 2

Weight Gainers by Optimum Nutrition

Sold as “Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary) (Pack of 2)”

Supports 21 goals and 54 benefits, based on 19 supplements and 35,290 published studies.

Servings
16

Supplement Facts

Serving size: 340g (About 2 Scoops) · 16 servings per container

Evidence from published research

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