Optimum Nutrition Serious Mass is one of the most popular weight gainers on the market worldwide. Like all Optimum Nutrition products, it offers high quality at a good price. In addition to protein, the powder naturally also contains a lot of carbohydrates and some supplements that not only do the body good after a hard workout, but are generally needed in the muscle building or mass phase. It should be particularly emphasized that no refined sugar is added to Optimum Nutrition, but all sugars and carbohydrates in the weight gainer are of natural origin.
Nutritional information / Consumption recommendation