Optimum Nutrition Serious Mass Protein Vanilla 5.44kg Pre-Workout Enriched with Aminexil and Niacinamide

Enriched with Aminexil and Niacinamide

Infused with weightless

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Optimum Nutrition Serious Mass Protein Vanilla 5.44kg Pre-Workout Enriched with Aminexil and NiacinamideOptimum Nutrition Serious Mass is a high calorie weight gainer which is also high in protein and when taken over time with regular resistance exercise and a balanced diet can help you gain mass and muscle. It also has creatine and glutamine to support Muscle building & recovery, when accompanied by a balanced diet and regular exercise.