- ON Serious Mass 6 lbs. provide you 1,250 calories per serving in water & 1,630 calories when made with low-fat milk.
- It has 50 Grams of protein from a mixture of faster and slower digesting resources including Whey, casein, and Egg.
- ON serious Mass helps to supply 250-plus grams of carbohydrates to support fueling of intense workouts and aid in the replenishment of glycogen stores – with No Added Sugar.
- It enhanced with Creatine, Glutamine Peptides & L-glutamine, Inositol, Choline, MCTs, and PABA.
- Optimum Nutrition Serious Mass enriched with 25 Vitamins & Essential Minerals with an emphasis on B-vitamins and Antioxidants.
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