Optimum Nutrition Serious Mass Protein Powder 2.72kg SELECT: FLAVOUR:STRAWBERRY L-Phenylalanine

L-Phenylalanine

3 G Of Which Saturates 0

Backed by science and perfected by you

a sugar-free sports drink

Biscuit Granules (1%) [Flour (WHEAT Flour

Optimum Nutrition Serious Mass Protein Powder 2.72kg SELECT: FLAVOUR:STRAWBERRY L-PhenylalanineSerious Mass by Optimum Nutrition is the ultimate weight gaining formula that champions quicker muscle building. If you find it difficult to gain weight, Serious Mass can help you develop the physique you're striving for. Without consuming adequate calories or quality protein sources, you simply can't get any bigger to enhance muscle growth. One shake serving delivers an incredible 1,250 calories, 50 grams of protein and 250 grams of carbohydrates.