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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
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Serious Mass by Optimum Nutrition
Serious Mass by Optimum Nutrition
Serious Mass by Optimum Nutrition
Serious Mass by Optimum Nutrition
Serious Mass by Optimum Nutrition
Serious Mass by Optimum Nutrition
Serious Mass by Optimum Nutrition

Serious Mass by Optimum Nutrition

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$89.95
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Pack on some serious mass with Optimum Nutrition Serious Mass protein powder. This weight gainer formula contains 50 grams of protein per serving to help you achieve your gains. Made with a high-quality protein blend, this formula has added creatine and glutamine for optimal performance and results. Read more

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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).

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
Banana Avg. Quantity Per Serve 2 heaped scoops (336g) Avg. Quantity Per 100g
Energy 1253 kcal 369 kcal
Protein 50 g 15 g
Fat: total 4.5 g 1 g
- saturated 3 g 0.9 g
Carbohydrate 253 g 75g
- sugars 20 g 6 g
Sodium 440 mg 131 mg
Vitamin A 375μg RE 112 μg RE
Vitamin C 30 mg 9 mg
Vitamin E 8 mg α-TE 2 mg α-TE
Vitamin B1 0.3 mg 0.1 mg
Vitamin B2 0.8 mg 0.2 mg
Niacin 4 mg NE 1 mg NE
Vitamin B6 0.4 mg 0.1 mg
Folic acid 100 μg 30 μg
Vitamin B12 1.2μg 0.4 μg
Biotin 50 μg 15 μg
Pantothenic acid 3 mg 0.9 mg
Calcium 720 mg 214 mg
Iron 6 mg 2 mg
Iodine 23 μg 7 μg
Magnesium 220 mg 65 mg
Zinc 4 mg 1 mg
Copper 0.4 mg 0.1 mg
Manganese 1 mg 0.3 mg
Potassium 520 mg 155 mg
Creatine Monohydrate 3 g 0.9 g
L-Glutamine 1 g 0.3 g
Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, Sweet Dairy Whey), Natural And Artificial Flavors, Vitamin And Mineral Blend (DiPotassium, Magnesium Aspartate, DiCalcium, 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, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Medium Chain Triglycerides, Lecithin, Malic Acid, Acesulfame Potassium, Sucralose, FD&C Yellow #5. Allergen Information: Contains Milk, Egg, Wheat (Glutamine Pep) And Soy (Lecithin) Ingredients.

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).

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.
Banana Avg. Quantity Per Serve 2 heaped scoops (336g) Avg. Quantity Per 100g
Energy 1253 kcal 369 kcal
Protein 50 g 15 g
Fat: total 4.5 g 1 g
- saturated 3 g 0.9 g
Carbohydrate 253 g 75g
- sugars 20 g 6 g
Sodium 440 mg 131 mg
Vitamin A 375μg RE 112 μg RE
Vitamin C 30 mg 9 mg
Vitamin E 8 mg α-TE 2 mg α-TE
Vitamin B1 0.3 mg 0.1 mg
Vitamin B2 0.8 mg 0.2 mg
Niacin 4 mg NE 1 mg NE
Vitamin B6 0.4 mg 0.1 mg
Folic acid 100 μg 30 μg
Vitamin B12 1.2μg 0.4 μg
Biotin 50 μg 15 μg
Pantothenic acid 3 mg 0.9 mg
Calcium 720 mg 214 mg
Iron 6 mg 2 mg
Iodine 23 μg 7 μg
Magnesium 220 mg 65 mg
Zinc 4 mg 1 mg
Copper 0.4 mg 0.1 mg
Manganese 1 mg 0.3 mg
Potassium 520 mg 155 mg
Creatine Monohydrate 3 g 0.9 g
L-Glutamine 1 g 0.3 g
Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, Sweet Dairy Whey), Natural And Artificial Flavors, Vitamin And Mineral Blend (DiPotassium, Magnesium Aspartate, DiCalcium, 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, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Medium Chain Triglycerides, Lecithin, Malic Acid, Acesulfame Potassium, Sucralose, FD&C Yellow #5. Allergen Information: Contains Milk, Egg, Wheat (Glutamine Pep) And Soy (Lecithin) Ingredients.

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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Total 5 star reviews: 47 Total 4 star reviews: 7 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 0
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