ON Serious Mass is a well-rounded weight gaining formula with a whopping 1,250 calories per serving. But it's not just a calorie bomb -- there's also 50 grams of protein, creatine, glutamine, zero added sugar, and much more.
Use Optimum Nutrition Serious Mass to pack on the muscle mass you've always desired. Mix two scoops with 700mL of water, or for a thicker consistency, use milk instead. Take one full serving per day.
Serving Size: 2 heaping scoops (334g)
Servings Per Container:
PABA, Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, Sweet Dairy Whey), Cocoa (Processed With Alkali), Natural And Artificial Flavor, Vitamin And Mineral Blend (DiPotassium Phosphate, Magnesium Aspartate, DiCalcium Phosphate, Calcium Citrate, Ascorbic Acid, Niacinamide, Zinc Citrate, Beta Carotene, D-Calcium Pantothenate, D-Alpha Tocopheryl Succinate, Selenomethionine, Copper Gluconate, Ferrous Fumarate, Manganese Amino Acid Chelate, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Acesulfame Potassium, Lecithin, Medium Chain Triglycerides.
We also carry it in a smaller 6lb container.
You absolutely can. If 1,250 calories is too much, just cut the serving down to half or a quarter. At that point, Optimum Nutrition Serious Mass turns into a great mid-day calorie boost or post-workout shake.
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