-20% | CODE: BLACK150
Serious mass (5.4kg)
Mass gain gas pedal
- Powerful formula to accelerate weight gain
- Hyper-fast weight gain
- Economy size 5.4kg
-15% + 1 gift from €100 purchase or -20% + 1 gift from €150 purchase | CODES : BLACK100 | BLACK150
TERMS
close*Non-cumulative offer, valid until 24/11/2025 at 09:30 am - While stocks last.
Free shippingfrom 80€ of purchase (See details)
+3 million parcelsPrepared by us
Customer review 4.7/5+32,000 verified reviews
Delivery information
closeLivraison en France métropolitaine
◉ DPD Pickup: $4.91 (free for purchases over $80), delivered in 1 to 2 business days*
◉ DPD Predict: $6.90 (free for orders over $80), delivered in 1 to 2 business days*
◉ Chronopost Pickup: €7.90 for any purchase amount, guaranteed delivery within one business day before 1 p.m.
◉ Chronopost: €9.90 for any purchase amount, guaranteed delivery within one business day before 1 p.m.
Delivery to Corsica and Monaco
◉ Colissimo Pickup: $4.90 (free for purchases over $80), delivered in 2 to 3 business days*
◉ Colissimo: $6.90 (free for purchases over $80), delivered in 2 to 3 business days*
Delivery in Belgium
◉ DPD Pickup: $6.90 (free for purchases over $80), delivered in 2 to 3 business days*
◉ DPD Predict: $8.90 (free for orders over $80), delivered in 2 to 3 business days*
Delivery to Germany, the Netherlands, Italy, Spain, Portugal
◉ DPD Pickup: $6.90 delivered in 2 to 3 business days*
◉ DPD Predict: $8.90 (free for orders over $80), delivered in 2 to 3 business days*
Delivery in Europe (excluding Switzerland, Andorra, Liechtenstein)
◉ Home delivery - DPD Predict: Depending on the weight of the package, delivered within 2 to 5 business days*
International shipping
◉ Colissimo International: Depending on the weight of the package, delivered within 3 to 8 business days*
*Average time observed (modified)
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Shock formula: whey + creatine for explosive weight gain.
SERIOUS MASS from Optimum Nutrition is a powerful mass gainer that enables both beginners and experienced athletes to rapidly increase body weight and muscle mass.
If you're struggling to gain weight or build muscle mass despite your best efforts and a diet rich in carbohydrates and protein, this gainer is the ultimate muscle mass-building formula!
Each serving of SERIOUS MASS delivers 1263 calories, with 50g of muscle-building protein and 251g of carbohydrates based on naturally occurring sugars only.
SERIOUS MASS gainer has the particularity of being highly dosed in Maltodextrin, a complex carbohydrate which is slowly assimilated by the body, providing a powerful, high-quality caloric intake responsible for rapid mass gain without increasing body fat.
SERIOUS MASS protein gainer is also based on a tri-source protein matrix (Whey Protein, Egg Protein, Casein). Whey spreads rapidly through the body, while Casein and Egg Protein are assimilated slowly, enabling the body and muscles to be fuelled for long hours, thus avoiding the process of muscle destruction (catabolism). The combination of these 3 protein sources provides a continuous supply of amino acids, thus stimulating muscle growth.
SERIOUS MASS is enriched with 3g creatine monohydrate, Choline for normal lipid metabolism and liver function, Inositol for lipid metabolism, easily digestible MCT oil used as fuel by the body, 8 vitamins (A, D, E, C, B) and 10 essential minerals. For extreme, effective weight gain, SERIOUS MASS is ideal for athletes undergoing intensive weight gain or for people with ectomorphic weight gain problems.
Available in 7 flavors: chocolate, vanilla, strawberry, banana, cookie & cream (with chocolate chips), choco - peanut butter, chocolate mint.
Net weight : 5,4 kgProduct with sweetener(s)
For rapid mass gain (approx. 1kg/week): Use SERIOUS MASS every day, in addition to a very starchy diet and intensive physical activity (3 to 5 times a week). Take 2 shakers a day between meals.
1 Shaker = 1 scoop (167 g) + approx. 500 ml water or semi-skimmed milk
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 378 kcal | 1263 kcal |
| Lipids | 1.7g | 5.5g |
| - of which saturated fats | 0.7g | 2.4g |
| Carbohydrates | 75g | 251g |
| - of which Sugar | 7.7g | 26g |
| Fibers | 1g | 3.2g |
| Protein | 15g | 50g |
| Salt | 0.47g | 1.56g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients ChocolateMaltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILKFlavours, creatine monohydrate, creatine mineral complex MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 380 kcal | 1268 kcal |
| Lipids | 1.4g | 4.6g |
| - of which saturated fats | 0.5g | 1.7g |
| Carbohydrates | 77g | 256g |
| - of which Sugar | 7.8g | 26g |
| Protein | 15g | 50g |
| Salt | 0.48g | 1.59g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients VanillaMaltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILKFlavours, creatine monohydrate, creatine mineral complex MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 380 kcal | 1268 kcal |
| Lipids | 1.4g | 4.6g |
| - of which saturated fats | 0.5g | 1.7g |
| Carbohydrates | 77g | 256g |
| - of which Sugar | 7.8g | 26g |
| Protein | 15g | 50g |
| Salt | 0.48g | 1.59g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients StrawberryMaltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILKFlavours, creatine monohydrate, creatine mineral complex MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 379 kcal | 1267 kcal |
| Lipids | 1.4g | 4.7g |
| - of which saturated fats | 0.5g | 1.8g |
| Carbohydrates | 77g | 256g |
| - of which Sugar | 7.9g | 26g |
| Protein | 15g | 50g |
| Salt | 0.48g | 1.59g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients Banana maltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILKFlavours, creatine monohydrate, creatine mineral complex MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 379 kcal | 1267 kcal |
| Lipids | 1.6g | 5.4g |
| - of which saturated fats | 0.6g | 2g |
| Carbohydrates | 76g | 254g |
| - of which Sugar | 8g | 27g |
| Protein | 15g | 50g |
| Salt | 0.49g | 1.63g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients Cookies and CreamMaltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILK], flavourings, crumbled cookie (1.4%) [wheat flour wheat, sugar, vegetable fats (palm and rapeseed), low-fat cocoa powder, sodium chloride], creatine monohydrate, mineral complex of MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 378 kcal | 1263 kcal |
| Lipids | 1.7g | 5.5g |
| - of which saturated fats | 0.7g | 2.4g |
| Carbohydrates | 75g | 251g |
| - of which Sugar | 7.7g | 26g |
| Fibers | 1g | 3.2g |
| Protein | 15g | 50g |
| Salt | 0.47g | 1.56g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients Chocolate MintMaltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILKCocoa powder, flavourings, creatine monohydrate, creatine mineral complex MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
| Per 100g | For 334g | |
|---|---|---|
| Kilocalories | 378 kcal | 1263 kcal |
| Lipids | 1.7g | 5.5g |
| - of which saturated fats | 0.7g | 2.4g |
| Carbohydrates | 75g | 251g |
| - of which Sugar | 7.7g | 26g |
| Fibers | 1g | 3.2g |
| Protein | 15g | 50g |
| Salt | 0.47g | 1.56g |
| Vitamin A | 192mcg | 640mcg |
| Vitamin D | 1.2mcg | 4mcg |
| Vitamin E | 2.7mg | 9mg |
| Vitamin K | 22mcg | 75mcg |
| Vitamin C | 18mg | 60mg |
| Vitamin B1 (Thiamine) | 0.26mg | 0.86mg |
| Vitamin B2 (Riboflavin) | 0.34mg | 1.1mg |
| Vitamin B3 (Niacin) | 3.8mg | 13mg |
| Vitamin B6 (Pyridoxine) | 0.33mg | 1.1mg |
| Vitamin B9 (Folic acid) | 45mcg | 150mcg |
| Vitamin B12 (Cobalamin) | 2.2mcg | 7.4mcg |
| Vitamin B8 (Biotin) | 11mcg | 37mcg |
| Vitamin B5 (Pantothenic acid) | 1.4mg | 4.5mg |
| Calcium | 180mg | 600mg |
| Phosphorus | 157mg | 525mg |
| Magnesium | 84mg | 282mg |
| Iron | 4.2mg | 14mg |
| Zinc | 3mg | 10mg |
| Copper | 0.3mg | 1mg |
| Manganese | 0.6g | 2mg |
| Fluoride | 1mg | 3.5mg |
| Selenium | 16mcg | 55mcg |
| Chrome | 12mcg | 40mcg |
| Molybdenum | 15mcg | 50mcg |
| Iodine | 44.9mcg | 150mcg |
| Creatine | 0.9g | 3g |
Ingredients Chocolate & Peanut butterMaltodextrin, protein concentrate from whey [MILK], caseinate calcium [MILKCocoa powder, flavourings, creatine monohydrate, creatine mineral complex MILK, medium-chain triglycerides, albumin eGG, dipotassium phosphate, sodium chloride, color (curcumin), vitamin and mineral blend (sodium L-ascorbate, ferric pyrophosphate, D-alpha-tocopherol acetate, nicotinamide, zinc oxide, retinol acetate, D-calcium pantothenate, sodium fluoride, manganese sulfate, potassium iodide, cyanocobalamin, D-biotin, chromium chloride, pteroylmonoglutamic acid, cholecalciferol, sodium selenite, copper citrate, pyridoxine hydrochloride, thiamine hydrochloride, phylloquinone, riboflavin, sodium molybdate), glutamine peptides [ ]GLUTEN from BLEL-glutamine, magnesium oxide, whey powder [MILKInositol, L-ascorbic acid, sweetener (sucralose), antioxidant (tocopherol-rich extract), calcium D-pantothenate, pteroylglutaminic acid.
Consume as part of a varied, balanced diet. Best consumed before: see print. Store in a dry, dark place. Excessive consumption of this product may have laxative effects.
Allergens: Produced in a factory processing eggs, milk proteins, gluten, peanuts, soya and shellfish ingredients.
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