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Serious Mass by Optimum Nutrition

4.8
Rated 4.8 out of 5 stars
71 Reviews
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  • 1250 calories per serve
  • 50g protein for muscle growth
  • Includes 20 vitamins and minerals

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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 building muscle mass, increasing calorie intake is essential. Optimum Nutrition offers a powerful solution with its Serious Mass gainer formula, designed for individuals aiming to bulk up. Each serving packs a hefty punch with 1250 calories, 50 grams of protein, and over 250 grams of carbohydrates.

What sets this weight gainer apart is the absence of added sugars, replaced instead by beneficial ingredients like creatine, glutamine, and a blend of 20 vitamins and minerals. This results in a delicious shake loaded with high-quality calories ideal for muscle growth. Optimum Nutrition Serious Mass stands out as the ultimate formula for both muscle building and weight gain.

Key Benefits of Optimum Nutrition Serious Mass:

  • Facilitates muscle mass gains
  • Delivers 1250 calories per serving to support optimal weight gain and muscle development
  • Contains a high-value protein blend (50g) for muscle maintenance and growth
  • Provides over 250g of carbohydrates to fuel workouts and replenish glycogen stores
  • Incorporates creatine monohydrate for enhanced muscle strength, power, and size during intense training
  • Enriched with 20 essential minerals and vitamins
  • Ideal for post-workout recovery or as a meal replacement

Who Should Use Optimum Nutrition Serious Mass?

This product is perfect for individuals engaged in rigorous training regimes seeking to increase muscle mass. It's also suitable for those struggling to meet their daily calorie requirements through regular food intake or facing challenges in gaining weight despite sufficient eating.

When Is the Best Time to Consume Optimum Nutrition Serious Mass?

Serious Mass can be taken post-workout to aid in recovery and muscle growth or between meals to help meet macro targets. Simply mix two scoops with 700-720ml of cold water or milk using an electric blender. Beginners can start with one scoop (half serving) before progressing.

Mix two scoops (334g) with 700–720ml of cold water or milk in a blender. Consume post-workout or between meals. Beginners may start with one scoop and gradually increase to two scoops per serve. This product is intended for healthy adults; always read the label, use only as directed, and seek medical advice if unsure.
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.

Warning

This product is not a sole source of nutrition and should be consumed in conjunction with a nutritious diet and an appropriate training or exercise program. Not suitable for children under 15 years of age or pregnant women: Should only be used under medical or dietetic supervision.

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 building muscle mass, increasing calorie intake is essential. Optimum Nutrition offers a powerful solution with its Serious Mass gainer formula, designed for individuals aiming to bulk up. Each serving packs a hefty punch with 1250 calories, 50 grams of protein, and over 250 grams of carbohydrates.

What sets this weight gainer apart is the absence of added sugars, replaced instead by beneficial ingredients like creatine, glutamine, and a blend of 20 vitamins and minerals. This results in a delicious shake loaded with high-quality calories ideal for muscle growth. Optimum Nutrition Serious Mass stands out as the ultimate formula for both muscle building and weight gain.

Key Benefits of Optimum Nutrition Serious Mass:

  • Facilitates muscle mass gains
  • Delivers 1250 calories per serving to support optimal weight gain and muscle development
  • Contains a high-value protein blend (50g) for muscle maintenance and growth
  • Provides over 250g of carbohydrates to fuel workouts and replenish glycogen stores
  • Incorporates creatine monohydrate for enhanced muscle strength, power, and size during intense training
  • Enriched with 20 essential minerals and vitamins
  • Ideal for post-workout recovery or as a meal replacement

Who Should Use Optimum Nutrition Serious Mass?

This product is perfect for individuals engaged in rigorous training regimes seeking to increase muscle mass. It's also suitable for those struggling to meet their daily calorie requirements through regular food intake or facing challenges in gaining weight despite sufficient eating.

When Is the Best Time to Consume Optimum Nutrition Serious Mass?

Serious Mass can be taken post-workout to aid in recovery and muscle growth or between meals to help meet macro targets. Simply mix two scoops with 700-720ml of cold water or milk using an electric blender. Beginners can start with one scoop (half serving) before progressing.

Mix two scoops (334g) with 700–720ml of cold water or milk in a blender. Consume post-workout or between meals. Beginners may start with one scoop and gradually increase to two scoops per serve. This product is intended for healthy adults; always read the label, use only as directed, and seek medical advice if unsure.
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.

Warning

This product is not a sole source of nutrition and should be consumed in conjunction with a nutritious diet and an appropriate training or exercise program. Not suitable for children under 15 years of age or pregnant women: Should only be used under medical or dietetic supervision.

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
4.8
Rated 4.8 out of 5 stars
Based on 71 reviews
Total 5 star reviews: 62 Total 4 star reviews: 7 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 0
Slide 1 selected
97%would recommend this product
Rating
Ratings
71 reviews
  • JH
    Jonathan H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    11 months 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.

  • DW
    Dale W.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    A+++

    Serious Mass is a great product if you are looking to add those extra calories to your diet

  • JM
    Jason M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Serious Stuff.

    As described, highly recommended. 👍

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