Optimum Nutrition Serious Mass Gainer
Ultimate Weight Gainer for Fast Muscle Growth, Strength Gains & Post-Workout Recovery
Trusted by bodybuilders, athletes and hardgainers, thisĀ best-selling mass gainer deliversĀ 1,250 premium calories per servingĀ withĀ 50g protein,Ā 250g carbs, andĀ 25 essential vitamins/mineralsĀ to help you:
Increase WeightĀ of quality mass
Increase strengthĀ by increasing calories and protein
Boost workout performanceĀ with sustained energy
Enhance muscle recoveryĀ after intense training
Why Serious Mass is the UK's Top Weight Gainer?
ā
Ā 3:1 Carb-to-Protein RatioĀ - Perfect forĀ clean bulkingĀ
ā
Ā Added Creatine & GlutamineĀ - ForĀ muscle growth & recoveryĀ
ā
Ā No Sugar CrashesĀ - Steady energy release
ā
Ā Trusted BrandĀ -Ā Optimum NutritionĀ (Link to: "/collections/optimum-nutrition") quality
Who Should Use Serious Mass?
-
BodybuildersĀ in off-seasonĀ
-
Strength AthletesĀ chasing PRs
-
CrossFitĀ® & Hyrox AthletesĀ needing extra calories
-
Vegetarian LiftersĀ requiring mass-building nutrition
Ideal For:
-
HardgainersĀ struggling to add sizeĀ
-
Bulking phasesĀ (off-season athletes)
-
Post-workout nutrition
-
Meal replacementĀ when busy
Get Serious Mass 5.4kg - Fast UK Delivery!
16,200+ Verified 5ā Reviews | UK's #1 Rated Supplement Store
ā
Next Day Delivery (Order by 4PM)
š Trusted by 80,000+ UK customers
ā 4.8/5 Average Rating across 16,200+ reviews
Recommended Usage
Add two heaping scoops (334 g) of serious muscle mass to a large blender filled with 24 fl. oz. of cold water or milk.
If desired, add ice and other ingredients, cover and blend on a high speed for 45-60 seconds ā or until thoroughly mixed.
New users may find it beneficial to begin with one half of a serving daily for the first week, gradually increasing to one or more full servings several times a day.
Nutritional Information
| Typical Values | Per 330 g Serving | Per 100g |
| Energy (kj) | 5,266.0 | 1595.76 |
| Energy (kcal) | 1,259.0 | 381.52 |
| Protein (g) | 50.0 | 15.15 |
| Carbohydrates (g) | 252.0 | 76.36 |
| Of which Sugars (g) | 26.0 | 7.88 |
| Fat (g) | 5.3 | 1.61 |
| Of which saturates (g) | 3.1 | 0.94 |
| Dietary Fibre (g) | 2.4 | 0.73 |
| Sodium (mg) | 763.0 | 231.21 |
| Salt (g) | 1.9 | 0.58 |
| Biotin (ug) | 55.0 | 16.67 |
| Calcium (mg) | 407.0 | 123.33 |
| Chloride (mg) | 1,100.0 | 333.33 |
| Chromium (ug) | 140.0 | 42.42 |
| Copper (mg) | 0.9 | 0.26 |
| Folic Acid (mg) | 71.6 | 21.7 |
| Iodine (mcg) | 51.0 | 15.45 |
| Iron (mg) | 9.2 | 2.79 |
| Magnesium (mg) | 66.6 | 20.18 |
| Manganese (mg) | 0.6 | 0.18 |
| Niacin (mg) | 6.9 | 2.09 |
| Pantothenic Acid (mg) | 2.2 | 0.67 |
| Phosphorus (mg) | 596.0 | 180.61 |
| Potassium (mg) | 1,360.0 | 412.12 |
| Riboflavin (mg) | 0.5 | 0.16 |
| Selenium (ug) | 11.0 | 3.33 |
| Thiamin (mg) | 0.5 | 0.16 |
| Vitamin A (ug) | 303.0 | 91.82 |
| Vitamin B6 (mg) | 0.7 | 0.22 |
| Vitamin B12Ā (mg) | 0.5 | 0.14 |
| Vitamin C (mg) | 22.0 | 6.67 |
| Vitamin D (ug) | 1.9 | 0.58 |
| Vitamin E (mg) | 3.7 | 1.12 |
| Zinc (mg) | 4.1 | 1.24 |
Ā
Ingredients:
Ingredients may vary depending on flavour - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin),Fat Reduced Cocoa Powder, Flavorings, Mineral Blend (DiPotassium Phosphate, Sodium Chloride, Ferric Pyrophosphate, Zinc Oxide Copper Gluconate, Manganese Sulphate, Chromium Chloride Hexahydrate, Potassium Iodine), Medium Chain Tri-glycerides, Creatine Monohydrate, Choline Bitartrate, L-glutamine, Glutamine Peptides (gluten), whey powder, inositol, vitamin blend (ascorbic acid, vitamin E-acetate, niacinamide, biotin, vitamin A-acetate), calcium-D-pantothenate, pyridoxine hydrochloride, folic acid, cholecalciferol, thiamine hydrochloride, riboflavin, vitamin b12, sweetener (sucralose)
Original: $44.29
-65%$44.29
$15.50Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Ultimate Weight Gainer for Fast Muscle Growth, Strength Gains & Post-Workout Recovery
Trusted by bodybuilders, athletes and hardgainers, thisĀ best-selling mass gainer deliversĀ 1,250 premium calories per servingĀ withĀ 50g protein,Ā 250g carbs, andĀ 25 essential vitamins/mineralsĀ to help you:
Increase WeightĀ of quality mass
Increase strengthĀ by increasing calories and protein
Boost workout performanceĀ with sustained energy
Enhance muscle recoveryĀ after intense training
Why Serious Mass is the UK's Top Weight Gainer?
ā
Ā 3:1 Carb-to-Protein RatioĀ - Perfect forĀ clean bulkingĀ
ā
Ā Added Creatine & GlutamineĀ - ForĀ muscle growth & recoveryĀ
ā
Ā No Sugar CrashesĀ - Steady energy release
ā
Ā Trusted BrandĀ -Ā Optimum NutritionĀ (Link to: "/collections/optimum-nutrition") quality
Who Should Use Serious Mass?
-
BodybuildersĀ in off-seasonĀ
-
Strength AthletesĀ chasing PRs
-
CrossFitĀ® & Hyrox AthletesĀ needing extra calories
-
Vegetarian LiftersĀ requiring mass-building nutrition
Ideal For:
-
HardgainersĀ struggling to add sizeĀ
-
Bulking phasesĀ (off-season athletes)
-
Post-workout nutrition
-
Meal replacementĀ when busy
Get Serious Mass 5.4kg - Fast UK Delivery!
16,200+ Verified 5ā Reviews | UK's #1 Rated Supplement Store
ā
Next Day Delivery (Order by 4PM)
š Trusted by 80,000+ UK customers
ā 4.8/5 Average Rating across 16,200+ reviews
Recommended Usage
Add two heaping scoops (334 g) of serious muscle mass to a large blender filled with 24 fl. oz. of cold water or milk.
If desired, add ice and other ingredients, cover and blend on a high speed for 45-60 seconds ā or until thoroughly mixed.
New users may find it beneficial to begin with one half of a serving daily for the first week, gradually increasing to one or more full servings several times a day.
Nutritional Information
| Typical Values | Per 330 g Serving | Per 100g |
| Energy (kj) | 5,266.0 | 1595.76 |
| Energy (kcal) | 1,259.0 | 381.52 |
| Protein (g) | 50.0 | 15.15 |
| Carbohydrates (g) | 252.0 | 76.36 |
| Of which Sugars (g) | 26.0 | 7.88 |
| Fat (g) | 5.3 | 1.61 |
| Of which saturates (g) | 3.1 | 0.94 |
| Dietary Fibre (g) | 2.4 | 0.73 |
| Sodium (mg) | 763.0 | 231.21 |
| Salt (g) | 1.9 | 0.58 |
| Biotin (ug) | 55.0 | 16.67 |
| Calcium (mg) | 407.0 | 123.33 |
| Chloride (mg) | 1,100.0 | 333.33 |
| Chromium (ug) | 140.0 | 42.42 |
| Copper (mg) | 0.9 | 0.26 |
| Folic Acid (mg) | 71.6 | 21.7 |
| Iodine (mcg) | 51.0 | 15.45 |
| Iron (mg) | 9.2 | 2.79 |
| Magnesium (mg) | 66.6 | 20.18 |
| Manganese (mg) | 0.6 | 0.18 |
| Niacin (mg) | 6.9 | 2.09 |
| Pantothenic Acid (mg) | 2.2 | 0.67 |
| Phosphorus (mg) | 596.0 | 180.61 |
| Potassium (mg) | 1,360.0 | 412.12 |
| Riboflavin (mg) | 0.5 | 0.16 |
| Selenium (ug) | 11.0 | 3.33 |
| Thiamin (mg) | 0.5 | 0.16 |
| Vitamin A (ug) | 303.0 | 91.82 |
| Vitamin B6 (mg) | 0.7 | 0.22 |
| Vitamin B12Ā (mg) | 0.5 | 0.14 |
| Vitamin C (mg) | 22.0 | 6.67 |
| Vitamin D (ug) | 1.9 | 0.58 |
| Vitamin E (mg) | 3.7 | 1.12 |
| Zinc (mg) | 4.1 | 1.24 |
Ā
Ingredients:
Ingredients may vary depending on flavour - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin),Fat Reduced Cocoa Powder, Flavorings, Mineral Blend (DiPotassium Phosphate, Sodium Chloride, Ferric Pyrophosphate, Zinc Oxide Copper Gluconate, Manganese Sulphate, Chromium Chloride Hexahydrate, Potassium Iodine), Medium Chain Tri-glycerides, Creatine Monohydrate, Choline Bitartrate, L-glutamine, Glutamine Peptides (gluten), whey powder, inositol, vitamin blend (ascorbic acid, vitamin E-acetate, niacinamide, biotin, vitamin A-acetate), calcium-D-pantothenate, pyridoxine hydrochloride, folic acid, cholecalciferol, thiamine hydrochloride, riboflavin, vitamin b12, sweetener (sucralose)
