OPTIMUM NUTRITION SERIOUS MASS 2.73kg (8 Shakes)
Serious weight gain requires serious calories. Optimum Nutrition Serious Mass is the ultimate weight gain formula. For muscle building and weight gain More than 1260 kcal per serving to help boost your calorie intake 50g protein per serving 25 vitamins supplements Those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, Serious Mass is the ultimate in weight gain formulas. With over 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates, and now with 3g of added creatine per serving to support performance, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS. Use anytime, it is quick, convenient and easy to prepare. Serious Mass is ideal between meals, after weight training as part of your recovery routine and before bed. Just mix two scoops of Serious Mass (330g) with 710ml of water to create a tasty, calorie-packed shake.
Serious weight gain requires serious calories. Optimum Nutrition Serious Mass is the ultimate weight gain formula. For muscle building and weight gain More than 1260 kcal per serving to help boost your calorie intake 50g protein per serving 25 vitamins supplements Those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, Serious Mass is the ultimate in weight gain formulas. With over 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates, and now with 3g of added creatine per serving to support performance, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS. Use anytime, it is quick, convenient and easy to prepare. Serious Mass is ideal between meals, after weight training as part of your recovery routine and before bed. Just mix two scoops of Serious Mass (330g) with 710ml of water to create a tasty, calorie-packed shake.
Serious weight gain requires serious calories. Optimum Nutrition Serious Mass is the ultimate weight gain formula. For muscle building and weight gain More than 1260 kcal per serving to help boost your calorie intake 50g protein per serving 25 vitamins supplements Those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, Serious Mass is the ultimate in weight gain formulas. With over 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates, and now with 3g of added creatine per serving to support performance, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS. Use anytime, it is quick, convenient and easy to prepare. Serious Mass is ideal between meals, after weight training as part of your recovery routine and before bed. Just mix two scoops of Serious Mass (330g) with 710ml of water to create a tasty, calorie-packed shake.
Serious weight gain requires serious calories. Optimum Nutrition Serious Mass is the ultimate weight gain formula. For muscle building and weight gain More than 1260 kcal per serving to help boost your calorie intake 50g protein per serving 25 vitamins supplements Those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, Serious Mass is the ultimate in weight gain formulas. With over 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates, and now with 3g of added creatine per serving to support performance, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS. Use anytime, it is quick, convenient and easy to prepare. Serious Mass is ideal between meals, after weight training as part of your recovery routine and before bed. Just mix two scoops of Serious Mass (330g) with 710ml of water to create a tasty, calorie-packed shake.
in 17 offers
The lowest price for OPTIMUM NUTRITION SERIOUS MASS 2.73kg (8 Shakes) right now is $83.23 at Carethy.au, compared across 6 retailers.
The all-time low was $60.64 on 29 Aug 2026 — today's price is 37% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 6 Nov 2026.
Last updated at 06/11/2026 00:17:04
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 8 Servings,
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Optimum Nutrition Serious Mass 2700 g Cookies
Delivery $82.99
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 8 Servings,
Delivery between 10–14 Nov $41
Optimum Nutrition Serious Mass 2,7kg Chocolate Peanuts - Gainer
Free delivery
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 8 Servings, 2.7
Delivery between 12–15 Nov $29
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
| Flavor | Vanilla, Banana, Chocolate, Chocolate Peanut Butter, Strawberry |
| Form | Powder |
| Protein Grams Per Serving | 50 g |
| Protein Type | Whey protein concentrate from milk |
| Meal Replacement? | May be used to supplement caloric intake |
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 8 Servings,
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Optimum Nutrition Serious Mass 2700 g Cookies
Delivery $82.99
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 8 Servings,
Delivery between 10–14 Nov $41
Optimum Nutrition Serious Mass 2,7kg Chocolate Peanuts - Gainer
Free delivery
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 8 Servings, 2.7
Delivery between 12–15 Nov $29
| Flavor | Vanilla, Banana, Chocolate, Chocolate Peanut Butter, Strawberry |
| Form | Powder |
| Protein Grams Per Serving | 50 g |
| Protein Type | Whey protein concentrate from milk |
| Meal Replacement? | May be used to supplement caloric intake |
