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Serious Mass by Optimum Nutrition

4.8
Rated 4.8 out of 5 stars
86 Reviews
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Nutrition Warehouse Callouts

5 Scoop Guarantee

🚚 We offer a 5 Scoop Return guarantee! You have 30 days to try up to 5 scoops, if you don't like the flavour or performance you can return it.

  • 1250 calories per serve
  • 50g protein for muscle support
  • Over 250g carbs for energy

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2025 Supplement Award Winner
  • 1 st
    Best Weight Gainer
  • 2 nd
    Brand of the Year

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When it comes to putting on muscle mass, you need to consume more calories than you expend a day. Because you can only consume so much food, Optimum Nutrition has produced this serious mass gainer formula for those people looking to pack on some serious mass. Make no mistake, this is a beast of a weight gainer because a serving of this will deliver 1250 calories from 50 grams of protein and more than 250 grams of carbohydrates.

The good news is there's no sugar added to the formula, but there is creatine and glutamine alongside 20 vitamins and minerals. What you're getting here are high-quality calories in a tasty mass-building shake. Optimum Nutrition Serious Mass is the ultimate muscle-building and weight-gain formula.

What are the benefits of having Serious Mass by Optimum Nutrition?

  • Muscle mass gains
  • 1250 calories per serve supporting calorie surplus for optimal weight gain and muscle building
  • 50g of high-value protein blend to build and maintain muscle
  • Over 250g of carbohydrates to fuel workouts and replenish glycogen stores
  • Added creatine monohydrate to support muscle strength, power and size when in conjunction with high-intensity training
  • Contains 20 additional minerals and vitamins
  • Perfect for post-workout replenishment or in between meals

Who should be taking Serious Mass by Optimum Nutrition?

Optimum Nutrition Serious Mass is perfect for those training longer and harder to gain muscle, for people who find it difficult to consume enough calories through food alone or who are challenged to gain weight regardless of food intake.

When is the best time to have Serious Mass by Optimum Nutrition?

You can use Serious Mass post workout to support recovery and growth or in between meals to help you hit your macros target. You can add two scoops of Serious Mass into 700 to 720ml of cold water or milk and use an electric blender. If you are new to Serious Mass, you can start with one scoop(half serving).

Serious Mass makes hitting your calorie and protein goals simple. With a blend of protein, carbs, and essential nutrients, it’s the go-to choice for anyone serious about building size, recovery, and performance.

Mix 2 scoops of the powder into 700-720ml of cold water or milk using an electric blender. This allows to you add in fruits, peanut butter and other calorie-contributing foods. TIP: New users should start with a 1-scoop half serving. Use post-workout and/or between meals to add calories, carbs and protein to your healthy, balanced diet.
6lbs / Banana
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

6lbs / Chocolate
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

6lbs / Vanilla
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Banana
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Chocolate
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Vanilla
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Strawberry
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

Orders placed before 3PM AEST, Monday to Friday (not including Public Holidays), will be shipped the same day! Once your payment clears and despatch information is available we'll email you an order tracking number. Most customers receive their supplements in 1-2 business days! As long as:

  • You order before 3pm (AEST) Mon-Fri
  • You use a payment method with instant clearance, like Paypal Instant Payment or Credit Card
  • Your parcel is less than 5kg in cubic weight. (Some bulky goods will not apply)
  • You are not in a remote location

Please note parcels going via Australia Post (PoBox, Defence Adresses) may take longer than 1-3 business days.

Parcels going to NT, and bulky parcels going to WA may take 5+ business days to arrive.

If your order weighs more than 5kg or is bulky: Heavy or bulky orders are sent via road freight which means that the estimated delivery time will be longer than orders sent via air freight.

If you have used an alternate payment method: Direct bank deposit or Paypal Echeque may take some time to clear. To get your supplements in the shortest time possible, use Paypal's Instant Payment or a credit card.

Shipping Policy
More Information

When it comes to putting on muscle mass, you need to consume more calories than you expend a day. Because you can only consume so much food, Optimum Nutrition has produced this serious mass gainer formula for those people looking to pack on some serious mass. Make no mistake, this is a beast of a weight gainer because a serving of this will deliver 1250 calories from 50 grams of protein and more than 250 grams of carbohydrates.

The good news is there's no sugar added to the formula, but there is creatine and glutamine alongside 20 vitamins and minerals. What you're getting here are high-quality calories in a tasty mass-building shake. Optimum Nutrition Serious Mass is the ultimate muscle-building and weight-gain formula.

What are the benefits of having Serious Mass by Optimum Nutrition?

  • Muscle mass gains
  • 1250 calories per serve supporting calorie surplus for optimal weight gain and muscle building
  • 50g of high-value protein blend to build and maintain muscle
  • Over 250g of carbohydrates to fuel workouts and replenish glycogen stores
  • Added creatine monohydrate to support muscle strength, power and size when in conjunction with high-intensity training
  • Contains 20 additional minerals and vitamins
  • Perfect for post-workout replenishment or in between meals

Who should be taking Serious Mass by Optimum Nutrition?

Optimum Nutrition Serious Mass is perfect for those training longer and harder to gain muscle, for people who find it difficult to consume enough calories through food alone or who are challenged to gain weight regardless of food intake.

When is the best time to have Serious Mass by Optimum Nutrition?

You can use Serious Mass post workout to support recovery and growth or in between meals to help you hit your macros target. You can add two scoops of Serious Mass into 700 to 720ml of cold water or milk and use an electric blender. If you are new to Serious Mass, you can start with one scoop(half serving).

Serious Mass makes hitting your calorie and protein goals simple. With a blend of protein, carbs, and essential nutrients, it’s the go-to choice for anyone serious about building size, recovery, and performance.

Mix 2 scoops of the powder into 700-720ml of cold water or milk using an electric blender. This allows to you add in fruits, peanut butter and other calorie-contributing foods. TIP: New users should start with a 1-scoop half serving. Use post-workout and/or between meals to add calories, carbs and protein to your healthy, balanced diet.
6lbs / Banana
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

6lbs / Chocolate
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

6lbs / Vanilla
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Banana
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Chocolate
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Vanilla
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

12lbs / Strawberry
NUTRITION INFORMATION Per Serving in Water / Per Serving in Low Fat Milk
Calories 1250 / 1640
Calories from Fat 40 / 180
Total Fat 4.5 g (7%†) / 9 g (14%†)
Saturated Fat 1.5 g (8%†) / 4.5 g (23%†)
Cholesterol 80 mg (27%†) / 115 mg (38%†)
Total Carbohydrate 252 g (84%†) / 291 g (97%†)
Dietary Fibre 4 g (16%†) / 4 g (16%†)
Sugars 20 g / 20 g
Protein 50 g (100%†) / 74 g (148%†)
Vitamins & Minerals
Vitamin A 5000 IU (100%†) / 5600 IU (112%†)
Vitamin C 60 mg (100%†) / 66 mg (110%†)
Vitamin D 200 IU (50%†) / 220 IU (55%†)
Vitamin E 30 IU (100%†) / 33 IU (110%†)
Thiamin 1.5 mg (100%†) / 1.7 mg (113%†)
Riboflavin 1.7 mg (100%†) / 3.4 mg (200%†)
Niacin 20 mg (100%†) / 22 mg (110%†)
Vitamin B6 2 mg (100%†) / 2.2 mg (110%†)
Folic Acid 400 mcg (100%†) / 440 mcg (110%†)
Vitamin B12 6 mcg (100%†) / 6.6 mcg (110%†)
Biotin 300 mcg (100%†) / 330 mcg (110%†)
Pantothenic Acid 10 mg (100%†) / 11 mg (110%†)
Calcium 500 mg (50%†) / 1330 mg (133%†)
Phosphorus 380 mg (38%†) / 830 mg (83%†)
Iodine 150 mcg (100%†) / 165 mcg (110%†)
Magnesium 80 mg (20%†) / 88 mg (22%†)
Zinc 15 mg (100%†) / 18 mg (120%†)
Selenium 70 mcg (100%†) / 77 mcg (110%†)
Copper 1.6 mg (80%†) / 1.6 mg (80%†)
Manganese 2 mg (100%†) / 2 mg (100%†)
Chromium 120 mcg (100%†) / 120 mcg (100%†)
Molybdenum 75 mcg (100%†) / 75 mcg (100%†)
Sodium 470 mg (20%†) / 870 mg (36%†)
Potassium 1560 mg (45%†) / 2260 mg (65%†)
Other Ingredients
Creatine Monohydrate 1 g / 1 g
L-Glutamine 500 mg / 500 mg
Glutamine Peptides 500 mg / 500 mg
Choline (as choline bitartrate) 250 mg / 250 mg
Inositol 250 mg / 250 mg
PABA (para-aminobenzoic acid) 5 mg / 5 mg

Other Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, 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.

Nutrition information is intended as a guide and may vary slightly between flavours or over time. While we strive for accuracy, small differences can occur. For specific details on a particular flavour, please contact customer service.

Orders placed before 3PM AEST, Monday to Friday (not including Public Holidays), will be shipped the same day! Once your payment clears and despatch information is available we'll email you an order tracking number. Most customers receive their supplements in 1-2 business days! As long as:

  • You order before 3pm (AEST) Mon-Fri
  • You use a payment method with instant clearance, like Paypal Instant Payment or Credit Card
  • Your parcel is less than 5kg in cubic weight. (Some bulky goods will not apply)
  • You are not in a remote location

Please note parcels going via Australia Post (PoBox, Defence Adresses) may take longer than 1-3 business days.

Parcels going to NT, and bulky parcels going to WA may take 5+ business days to arrive.

If your order weighs more than 5kg or is bulky: Heavy or bulky orders are sent via road freight which means that the estimated delivery time will be longer than orders sent via air freight.

If you have used an alternate payment method: Direct bank deposit or Paypal Echeque may take some time to clear. To get your supplements in the shortest time possible, use Paypal's Instant Payment or a credit card.

Shipping Policy
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4.8
Rated 4.8 out of 5 stars
Based on 86 reviews
Total 5 star reviews: 75 Total 4 star reviews: 7 Total 3 star reviews: 3 Total 2 star reviews: 1 Total 1 star reviews: 0
TasteRated 4.6 on a scale of 1 to 5
TextureRated 4.4 on a scale of 1 to 5
Value for moneyRated 4.2 on a scale of 1 to 5
Slide 1 selected
95%would recommend this product
Rating
Ratings
86 reviews
  • JH
    Jonathan H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    I'm excited!

    I just started adding Serious Mass to my daily routines a few days ago and haven't seen any significant changes yet (of course lol). But, I know people who used/are using this for a long time and are happy with their gains hence, I tried it too. I'm excited to see my improvements 🤞

  • WR
    Wayne R.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    All I needed

    This product is a very y high-quality product

    Doing what I needed.

    TasteRated 5.0 on a scale of 1 to 5
    TextureRated 5.0 on a scale of 1 to 5
    Value for moneyRated 5.0 on a scale of 1 to 5
  • MU
    Muhammad U.
    Flag of Australia
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 years ago
    Best Mass Gainer

    This is the one which i like and got positive result. Flavour is very good. Nutrition content is excellent.

  • MZ
    MICHAEL Z.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Serious Mass is a Serious Weight Gainer

    Tastes great mixes well and with some fruit added, I like bananas, it is really filling.

    TasteRated 5.0 on a scale of 1 to 5
    TextureRated 5.0 on a scale of 1 to 5
    Value for moneyRated 5.0 on a scale of 1 to 5
    NW Profile picture for Nutrition Warehouse
    Nutrition Warehouse
    1 week ago

    Thanks Michael! 🙌 Love that you're getting serious gains with Serious Mass! Bananas are such a solid add-in too 💪✨

  • CC
    Clint C.
    Verified Buyer
    I do not recommend this product
    Rated 2 out of 5 stars
    2 weeks ago
    Serious ?

    Doesn’t mix well, strawberry flavour tastes artificial and felt blocked after a couple of days after consuming .

    TasteRated 1.0 on a scale of 1 to 5
    TextureRated 2.0 on a scale of 1 to 5
    Value for moneyRated 2.0 on a scale of 1 to 5
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