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Proteins 50g
Carbs 248g
Fat 7g

Values per serving 336 g

Optimum Nutrition
Serious Mass 5450 g

4.6

High-calorie weight gainer for weight and muscle growth.

A high-calorie weight gainer designed for athletes and active individuals who struggle to reach a sufficient daily calorie intake from food alone. Each serving provides over 1,250 kcal and combines high-quality carbohydrates, 50 g of whey protein, 3 g of creatine, and a broad spectrum of 25 vitamins and minerals to support performance, recovery, and overall health.

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Optimum Nutrition Serious Mass - high-calorie weight gainer for weight and muscle growth

Optimum Nutrition Serious Mass is a high-calorie weight gainer intended for athletes and active individuals who find it difficult to consume enough calories through their regular diet. Each serving delivers more than 1,250 kcal, a blend of quality carbohydrates, 50 g of whey protein, 3 g of creatine, and a comprehensive mix of 25 vitamins and minerals that support performance, recovery, and overall well-being.

Serious Mass is ideal post-workout, between meals, or as a nutritious energy boost during the day. It helps create the calorie surplus necessary for weight gain and muscle mass growth, especially for individuals with a fast metabolism or a lower appetite.

Benefits

more than 1,250 kcal per serving
50 g of high-quality whey protein to support muscle growth and maintenance
over 250 g of carbohydrates to replenish energy and glycogen stores
3 g of creatine to support performance during high-intensity training
25 vitamins and minerals for overall health and performance
ideal for weight and muscle gain
suitable post-workout, between meals, or before bed
convenient drink form with great taste

Who is Serious Mass suitable for

individuals with a fast metabolism
athletes aiming to increase body weight and muscle mass
people with demanding training schedules
those unable to consume enough calories from regular food
active individuals looking for a convenient energy source

Directions of use

Mix 1 serving (2 heaped scoops = 335 g) with 710 ml of water or milk and consume post-workout, between meals, or before bed according to your individual energy needs.

Ratings and Reviews

4.6

Extremely Good

Extremely Good 136 x
Very Good 49 x
Good 7 x
Not Bad 2 x
Bad 0 x

The best rated flavour is Cookies&cream (7 votes)

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5 out of 5 stars 5 / 5 Strawberry

That meets my expectations.

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Das entspricht meinen Erwartungen.

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5 out of 5 stars 5 / 5 Cookies&cream

Very effective and tastes super

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Sehr effektiv und schmeckt suprt

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5 out of 5 stars 5 / 5 Vanilla

100% original stuff

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100% original stuff

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5 out of 5 stars 5 / 5 Banana
5 out of 5 stars 5 / 5 Cookies&cream

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4 out of 5 stars 4 / 5 Chocolate

Super

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Super

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5 out of 5 stars 5 / 5 Chocolate-peanut butter

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5 out of 5 stars 5 / 5 Strawberry

Directions of use

Mix 1 serving (2 heaped scoops = 335 g) with 710 ml of water or milk and consume post-workout, between meals, or before bed according to your individual energy needs.

5450 g	banana
Serving size: 335 g
Servings per container: 16
Nutrition Information	Per Serving (335 g)	100 g	RI%*
Energy	5272 kJ / 1260 kcal	1576 kJ / 376.74 kcal	**
Fat	6,3 g	1.88 g	**
of which saturated	3,5 g	1.05 g	**
Carbohydrates	250 g	74.75 g	**
of which sugars	12 g	3.59 g	**
Protein	50 g	14.95 g	**
Salt	1,48 g	0.44 g	**
Vitamin A	664 mcg	198.54 mcg	83%
Vitamin D	4,2 mcg	1.26 mcg	84%
Vitamin E	9,0 mg	2.69 mg	75%
Vitamin K	75 mcg	22.43 mcg	100%
Vitamin C	63 mg	18.84 mg	79%
Thiamine	0,90 mg	0.27 mg	81%
Riboflavin	1,1 mg	0.33 mg	81%
Niacin	13 mg	3.89 mg	83%
Vitamin B6	1,1 mg	0.33 mg	82%
Folic acid	149 mcg	44.55 mcg	75%
Vitamin B12	1,9 mcg	0.57 mcg	75%
Biotin	39 mcg	11.66 mcg	79%
Pantothenic acid	4,5 mg	1.35 mg	75%
Calcium	770 mg	230.23 mg	96%
Phosphorus	536 mg	160.26 mg	77%
Magnesium	284 mg	84.92 mg	76%
Iron	14 mg	4.19 mg	100%
Zinc	10 mg	2.99 mg	100%
Copper	1,0 mg	0.3 mg	101%
Manganese	2,0 mg	0.6 mg	100%
Flouride	2,9 mg	0.87 mg	84%
Selenium	55 mcg	16.45 mcg	101%
Chromium	33 mcg	9.87 mcg	84%
Molybdenum	42 mcg	12.56 mcg	84%
Iodine	150 mcg	44.85 mcg	100%
Creatine	3,0 g	0.9 g	**
*RI - Dietary Reference Value. Reference intake of an average adult (8400 kJ / 2000 kcal)
**RI not established
Ingredients
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), Flavorings, creatine monohydrate, milk mineral complex, minerals (magnesium, iron, zinc, manganese, fluoride, selenium, iodine (from kelp), copper, molybdenum, chromium), salt, 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), colour (riboflavins).
Allergen Information
Contains milk, soya beans or products thereof.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

5450 g	chocolate
Serving size: 336 g
Servings per container: 16
Nutrition Information	Per Serving (336 g)	100 g	RI%*
Energy	5280 kJ / 1262 kcal	1574 kJ / 376.08 kcal	**
Fat	7,0 g	2.09 g	**
of which saturated	3,9 g	1.16 g	**
Carbohydrates	248 g	73.9 g	**
of which sugars	11 g	3.28 g	**
Protein	50 g	14.9 g	**
Salt	1,17 g	0.35 g	**
Vitamin A	667 mcg	198.77 mcg	83%
Vitamin D	4,2 mcg	1.25 mcg	84%
Vitamin E	9,0 mg	2.68 mg	75%
Vitamin K	75 mcg	22.35 mcg	100%
Vitamin C	63 mg	18.77 mg	79%
Thiamine	0,93 mg	0.28 mg	84%
Riboflavin	1,2 mg	0.36 mg	84%
Niacin	14 mg	4.17 mg	85%
Vitamin B6	1,1 mg	0.33 mg	82%
Folic acid	152 mcg	45.3 mcg	76%
Vitamin B12	1,9 mcg	0.57 mcg	75%
Biotin	40 mcg	11.92 mcg	79%
Pantothenic acid	4,6 mg	1.37 mg	77%
Calcium	667 mg	198.77 mg	83%
Phosphorus	524 mg	156.15 mg	75%
Magnesium	281 mg	83.74 mg	75%
Iron	18 mg	5.36 mg	127%
Zinc	11 mg	3.28 mg	106%
Copper	1,3 mg	0.39 mg	134%
Manganese	2,0 mg	0.6 mg	100%
Flouride	2,9 mg	0.86 mg	84%
Selenium	55 mcg	16.39 mcg	101%
Chromium	39 mcg	11.62 mcg	97%
Molybdenum	48 mcg	14.3 mcg	97%
Iodine	150 mcg	44.7 mcg	100%
Creatine	3,0 g	0.89 g	**
*RI - Dietary Reference Value. Reference intake of an average adult (8400 kJ / 2000 kcal)
**RI not established
Ingredients
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), fat reduced cocoa powder, creatine monohydrate, Flavoring, milk mineral complex, minerals (magnesium, iron, zinc, manganese, fluoride, selenium, iodine (from kelp), copper, molybdenum, chromium), vitamins (vitamin C, vitamin E, vitamin B3, vitamin A, pantothenic acid (calcium D-pantothenate (vit. B5)), D-biotin, vitamin B12, folic acid, vitamin D, vitamin B6, vitamin B1, vitamin K, vitamin B2), salt, stabilisers (cellulose gum, guar gum, carrageenan), sweetener (sucralose).
Allergen Information
Contains milk, soya beans or products thereof.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

5450 g	chocolate-mint
Serving size: 336 g
Servings per container: 16
Nutrition Information	Per Serving (336 g)	100 g	RI%*
Energy	5280 kJ / 1262 kcal	1574 kJ / 376.08 kcal	**
Fat	7,0 g	2.09 g	**
of which saturated	3,9 g	1.16 g	**
Carbohydrates	248 g	73.9 g	**
of which sugars	12 g	3.58 g	**
Protein	50 g	14.9 g	**
Salt	0,89 g	0.27 g	**
Vitamin A	667 mcg	198.77 mcg	83%
Vitamin D	4,2 mcg	1.25 mcg	84%
Vitamin E	9,0 mg	2.68 mg	75%
Vitamin K	75 mcg	22.35 mcg	100%
Vitamin C	63 mg	18.77 mg	79%
Thiamine	0,93 mg	0.28 mg	84%
Riboflavin	1,2 mg	0.36 mg	84%
Niacin	14 mg	4.17 mg	85%
Vitamin B6	1,1 mg	0.33 mg	82%
Folic acid	152 mcg	45.3 mcg	76%
Vitamin B12	1,9 mcg	0.57 mcg	75%
Biotin	40 mcg	11.92 mcg	79%
Pantothenic acid	4,6 mg	1.37 mg	77%
Calcium	667 mg	198.77 mg	83%
Phosphorus	524 mg	156.15 mg	75%
Magnesium	281 mg	83.74 mg	75%
Iron	18 mg	5.36 mg	127%
Zinc	11 mg	3.28 mg	106%
Copper	1,3 mg	0.39 mg	134%
Manganese	2,0 mg	0.6 mg	100%
Flouride	2,9 mg	0.86 mg	84%
Selenium	55 mcg	16.39 mcg	101%
Chromium	39 mcg	11.62 mcg	97%
Molybdenum	48 mcg	14.3 mcg	97%
Iodine	150 mcg	44.7 mcg	100%
Creatine	3,0 g	0.89 g	**
*RI - Dietary Reference Value. Reference intake of an average adult (8400 kJ / 2000 kcal)
**RI not established
Ingredients
Corn Maltodextrin, Whey Protein Concentrate [MILK] (Emulsifier: Lecithin [SOY]), Fat-Reduced Cocoa Powder, Creatine Monohydrate, Flavourings, Milk Mineral Complex, Minerals (Magnesium, Iron, Zinc, Manganese, Fluoride, Selenium, Iodine, Copper, Molybdenum, Chromium), Vitamins (C, E, B3, A, B5, B7, B12, B9, D, B6, B1, K, B2), Stabilisers (Cellulose Gum, Guar Gum, Carrageenan), Sweetener (Sucralose).
Allergen Information
Contains milk, soya beans or products thereof.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

5450 g	chocolate-peanut butter
Serving size: 330 g
Servings per container: 16
Nutrition Information	Per Serving (330 g)	100 g	RI% *
Energy	5314 kJ / 1270 kcal	1583 kJ / 378.46 kcal	**
Fat	7 g	2.09 g	**
of which saturated	4 g	1.19 g	**
Cholesterol	95 mg	28.31 mg	**
Carbohydrates	249 g	74.2 g	**
of which sugars	26 g	7.75 g	**
Dietary fiber	4 g	1.19 g	**
Sodium	700 mg	208.6 mg	**
Protein	50 g	14.9 g	**
Vitamin A	5000 IU	1490 IU	**
Vitamin D	200 IU	59.6 IU	**
Vitamin E	30 IU	8.94 IU	**
Vitamin C	60 mg	17.88 mg	**
Thiamine	4.8 mg	1.43 mg	**
Riboflavin	4 mg	1.19 mg	**
Niacin	50 mg	14.9 mg	**
Vitamin B6	5 mg	1.49 mg	**
Folic acid	400 mcg	119.2 mcg	**
Vitamin B12	10 mcg	2.98 mcg	**
Biotin	300 mcg	89.4 mcg	**
Pantothenic acid	25 mg	7.45 mg	**
Potassium	1300 mg	387.4 mg	**
Calcium	600 mg	178.8 mg	**
Iron	8 mg	2.38 mg	**
Phosphorus	650 mg	193.7 mg	**
Iodine	175 mcg	52.15 mcg	**
Magnesium	170 mg	50.66 mg	**
Zinc	18 mg	5.36 mg	**
Selenium	70 mcg	20.86 mcg	**
Copper	1.2 mg	0.36 mg	**
Manganese	2 mg	0.6 mg	**
Chromium	200 mcg	59.6 mcg	**
Molybdenum	75 mcg	22.35 mcg	**
Creatine monohydrate	1 g	0.3 g	**
L-Glutamine	501 mg	149.3 mg	**
Glutamine peptides	501 mg	149.3 mg	**
Choline (as Choline bitartrate)	607.9 mg	181.15 mg	**
Inositol	250.5 mg	74.65 mg	**
* Reference intake of average adult (8400 kj/ 2000 kcal)
** RI not specified
Ingredients
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), fat reduced cocoa powder, creatine monohydrate, Flavoring, milk mineral complex, 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), salt, stabilisers (cellulose gum, guar gum, carrageenan), sweetener (sucralose).
Allergen Information
Contains milk, eggs and gluten-containing cereals.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

5450 g	cookies&cream
Serving size: 336 g
Servings per container: 16
Nutrition Information	Per Serving (336 g)	100 g	RI%*
Energy	5293 kJ / 1265 kcal	1577 kJ / 376.97 kcal	**
Fat	6,9 g	2.06 g	**
of which saturated	4,0 g	1.19 g	**
Carbohydrates	250 g	74.5 g	**
of which sugars	12 g	3.58 g	**
Protein	50 g	14.9 g	**
Salt	1,48 g	0.44 g	**
Vitamin A	666 mcg	198.47 mcg	83%
Vitamin D	4,2 mcg	1.25 mcg	84%
Vitamin E	9,0 mg	2.68 mg	75%
Vitamin K	75 mcg	22.35 mcg	100%
Vitamin C	63 mg	18.77 mg	79%
Thiamine	0,90 mg	0.27 mg	82%
Riboflavin	1,1 mg	0.33 mg	82%
Niacin	13 mg	3.87 mg	83%
Vitamin B6	1,1 mg	0.33 mg	82%
Folic acid	150 mcg	44.7 mcg	75%
Vitamin B12	1,9 mcg	0.57 mcg	75%
Biotin	40 mcg	11.92 mcg	79%
Pantothenic acid	4,5 mg	1.34 mg	75%
Calcium	764 mg	227.67 mg	96%
Phosphorus	522 mg	155.56 mg	75%
Magnesium	282 mg	84.04 mg	75%
Iron	14 mg	4.17 mg	101%
Zinc	10 mg	2.98 mg	100%
Copper	1,0 mg	0.3 mg	101%
Manganese	2,0 mg	0.6 mg	100%
Flouride	2,9 mg	0.86 mg	84%
Selenium	55 mcg	16.39 mcg	101%
Chromium	34 mcg	10.13 mcg	84%
Molybdenum	42 mcg	12.52 mcg	84%
Iodine	150 mcg	44.7 mcg	100%
Creatine	3,0 g	0.89 g	**
*RI - Dietary Reference Value. Reference intake of an average adult (8400 kJ / 2000 kcal)
**RI not established
Ingredients
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), Flavorings, cookie crumb(1,5%) (wheat flour, sugar, vegetable fats (palm fat, rapeseed), fat reduced cocoa powder, salt), 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, soya beans or products thereof.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

5450 g	strawberry
Serving size: 334 g
Servings per container: 16
Nutrition Information	Per Serving (334 g)	100 g	RI% *
Energy	5263 kJ / 1258 kcal	1574 kJ / 376.14 kcal	**
Fat	4.4 g	1.32 g	**
of which saturated	1.6 g	0.48 g	**
Carbohydrates	251.9 g	75.32 g	**
of which sugars	21.8 g	6.52 g	**
Sodium	547 mg	163.55 mg	**
Protein	53.1 g	15.88 g	**
Vitamin A	299.3 mcg	89.49 mcg	**
Vitamin D	1.9 mcg	0.57 mcg	**
Vitamin E	3.5 mg	1.05 mg	**
Vitamin C	21.9 mg	6.55 mg	**
Thiamine	0.5 mg	0.15 mg	**
Riboflavin	0.6 mg	0.18 mg	**
Niacin	6.7 mg	2 mg	**
Vitamin B6	0.7 mg	0.21 mg	**
Folic acid	71.3 mcg	21.32 mcg	**
Vitamin B12	0.5 mcg	0.15 mcg	**
Biotin	54.8 mcg	16.39 mcg	**
Pantothenic acid	2.1 mg	0.63 mg	**
Potassium	1012.5 mg	302.74 mg	**
Chloride	649 mg	194.05 mg	**
Calcium	355.7 mg	106.35 mg	**
Iron	4.3 mg	1.29 mg	**
Phosphorus	130.7 mg	39.08 mg	**
Iodine	50.8 mcg	15.19 mcg	**
Magnesium	56.8 mg	16.98 mg	**
Zinc	2.7 mg	0.81 mg	**
Selenium	42.6 mcg	12.74 mcg	**
Copper	0.5 mg	0.15 mg	**
Manganese	0.6 mg	0.18 mg	**
Chromium	130.4 mcg	38.99 mcg	**
Creatine monohydrate	1 g	0.3 g	**
L-Glutamine	501 mg	149.8 mg	**
Glutamine peptides	501 mg	149.8 mg	**
Choline (as Choline bitartrate)	607.9 mg	181.76 mg	**
Inositol	250.5 mg	74.9 mg	**
* Reference intake of average adult (8400 kj/ 2000 kcal)
** RI not specified
Ingredients
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), Flavorings, creatine monohydrate, milk mineral complex, beetroot concentrate, 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, eggs and gluten-containing cereals.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

5450 g	vanilla
Serving size: 335 g
Servings per container: 16
Nutrition Information	Per Serving (335 g)	100 g	RI%*
Energy	5268 kJ / 1259 kcal	1575 kJ / 376.44 kcal	**
Fat	6,2 g	1.85 g	**
of which saturated	3,4 g	1.02 g	**
Carbohydrates	250 g	74.75 g	**
of which sugars	12 g	3.59 g	**
Protein	50 g	14.95 g	**
Salt	1,89 g	0.57 g	**
Vitamin A	664 mcg	198.54 mcg	83%
Vitamin D	4,2 mcg	1.26 mcg	84%
Vitamin E	9,0 mg	2.69 mg	75%
Vitamin K	75 mcg	22.43 mcg	100%
Vitamin C	63 mg	18.84 mg	79%
Thiamine	0,90 mg	0.27 mg	81%
Riboflavin	1,1 mg	0.33 mg	81%
Niacin	13 mg	3.89 mg	83%
Vitamin B6	1,1 mg	0.33 mg	82%
Folic acid	149 mcg	44.55 mcg	75%
Vitamin B12	1,9 mcg	0.57 mcg	75%
Biotin	39 mcg	11.66 mcg	79%
Pantothenic acid	4,5 mg	1.35 mg	75%
Calcium	760 mg	227.24 mg	77%
Phosphorus	530 mg	158.47 mg	76%
Magnesium	282 mg	84.32 mg	75%
Iron	14 mg	4.19 mg	100%
Zinc	10 mg	2.99 mg	100%
Copper	1,0 mg	0.3 mg	101%
Manganese	2,0 mg	0.6 mg	100%
Flouride	2,9 mg	0.87 mg	84%
Selenium	55 mcg	16.45 mcg	101%
Chromium	33 mcg	9.87 mcg	84%
Molybdenum	42 mcg	12.56 mcg	84%
Iodine	150 mcg	44.85 mcg	100%
Creatine	3,0 g	0.9 g	**
*RI - Dietary Reference Value. Reference intake of an average adult (8400 kJ / 2000 kcal)
**RI not established
Ingredients
Corn maltodextrin, whey protein concentrate (milk), emulsifier (lecithins (contains soy)), Flavorings, 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, soya beans or products thereof.
Warning
Store in a dry, dark place at a temperature below 25 °C, out of reach of small children. Not suitable for children, pregnant women or breastfeeding women. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet.

Buying options

Flavour

Rating

Banana
In stock

4.3

Chocolate
In stock

4.4

Chocolate-mint
In stock

Chocolate-peanut butter
In stock

4.8

Cookies&cream
In stock

4.9

Strawberry
In stock

4.8

Vanilla
In stock

4.6

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