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by Optimum Nutrition
If you are aspiring to be bigger, have a high metabolism, weak appetite or an on-the-run lifestyle, Serious Mass is for you. With over 1,250 calories, 50 grams of protein from whey, egg and milk, 250-plus grams of carbohydrates and 25 vitamins, you have everything you need to gain weight. Enhanced with creatine, L-glutamine and glutamine peptides, choline, inositol, PABA and medium chain triglycerides (MCTs). For best results, combine with intense weight training.
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