Serious Mass

Optimum Nutrition Serious Mass: high-calorie weight gainer, 1259 kcal, 50 g of protein and 3 g of creatine per serving

Size: 2.73 kg tub (8 servings) or 5.45 kg tub (16 servings)

Per serving (335 g): 1259 kcal, 50 g of protein, 250 g of carbohydrate, 3 g of creatine

Key benefits: whey protein, 25 vitamins and minerals, added creatine, low in fat

Flavours: Vanilla, Chocolate, Strawberry, Banana, Chocolate Peanut Butter, Cookies & Cream

Optimum Nutrition Serious Mass is the brand's highest-calorie gainer, designed for people who struggle to eat enough calories from food alone: fast metabolism, small appetite or days too busy for extra meals.

In its new European formula, one 335 g serving provides 1259 kcal, 50 g of protein from whey protein concentrate, 250 g of carbohydrate (of which only 12 g sugars) and 3 g of creatine monohydrate, with 6.2 g of fat. Protein contributes to a growth in and the maintenance of muscle mass. Carbohydrates contribute to the recovery of normal muscle function (contraction) after highly intensive and/or long-lasting physical exercise leading to muscle fatigue and the depletion of glycogen stores in skeletal muscle (effect obtained with a total carbohydrate intake of 4 g per kg body weight, in doses, within the first 4 to 6 hours after exercise).

Fortified with 25 vitamins and minerals (including iron, zinc, vitamin D and B vitamins), it is blended with water, between meals or after training. Available in a 2.73 kg tub (8 servings) and a large 5.45 kg tub (16 servings), in six flavours.

Ingredients (reference flavour: Vanille)

Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), flavourings, creatine monohydrate, milk mineral complex, salt, minerals (magnesium, iron, zinc, manganese, fluoride, selenium, iodine (from kelp), copper, molybdenum, chromium), vitamins (vitamin C, vitamin E, vitamin B3, vitamin A, pantothenic acid (vit. B5), D-biotin, vitamin B12, folic acid, vitamin D, vitamin B6, vitamin B1, vitamin K, vitamin B2), stabilisers (cellulose gum, guar gum, carrageenan), sweetener (sucralose).

Allergen information

Contains: milk, soy.

May contain traces of gluten, egg, nuts and peanuts.

The Cookies & Cream flavour also contains cookie pieces made with wheat flour (gluten).

Composition and allergens may vary by flavour: please refer to the packaging.

Directions for use

Add 2 heaped scoops (335 g) to a blender with 710 ml of water and blend for 30 to 45 seconds.

Take between meals when you need extra calories, or after training. New users may start with a half serving (1 scoop) and gradually increase to a full serving.