Optimum Nutrition Serious Mass 2.73kg - Chocolate Peanut Butter Little Dragon utilising proven and effective ingredients

utilising proven and effective ingredients - a massive 10g of D-Ribose and 4g of L- Ornithine to name just two - that aren't likely in your current training stack

When your sights are set on energy

and combat stress during intense training sessions

Unleash the beast within and experience unmatched performance

nourish your muscles

Optimum Nutrition Serious Mass 2.73kg - Chocolate Peanut Butter Little Dragon utilising proven and effective ingredientsSerious Mass is a high calorie weight gain supplement with 50g of protein and 1,250 calories per serving. Its designed for individuals looking to pack on mass or increase their caloric intake. Serving Size: 2 scoops (334g) Servings Per Container: 8