Serious Mass
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Optimum Nutrition Serious Mass
- Optimum Nutrition's Serious Mass is the ultimate weight gain formula. With 1,250 calories per serving and 50 grams of protein for muscle recovery, this instantised powder makes for a sizeable post-workout and between-meals shake. Optimum Nutrition's Serious Mass’ protein blend provides easy-to-diges
Rated by our experts
- 9 Energy
- 7 Recovery
- 10 Build muscle
- 8 Weight loss
- 6 Taste
Price range: $89.90 through $169.90
or 4 interest-free payments through our buy now, pay later partners.
3. Quantity
Buy 2, Get 5% off
Availability online: In stock
In-store availability
Buy now Delivered as early as 15th Sept
Optimum Nutrition’s Serious Mass is the ultimate weight gain formula. With 1,250 calories per serving and 50 grams of protein for muscle recovery, this instantised powder makes for a sizeable post-workout and between-meals shake. Optimum Nutrition’s Serious Mass’ protein blend provides easy-to-digest protein, boosting your muscle protein synthesis and providing quick absorbable protein for better recovery and bigger gains after an intense workout session. Make sure to follow the directions of use at the back of the tub to enjoy the best effects.
The nutritional panel for this product is on its label. Serving size, servings per pack and the full ingredient list are shown on the pack — check it before use, as brands reformulate from time to time.
Mix one scoop with 250-300ml of cold water or milk. Take one serve daily, or as directed by a healthcare professional. Best used within 12 months of opening.
Orders placed before 2pm AEST ship the same business day. Free shipping on orders over $150. Standard delivery is 2-6 business days depending on your location.
Is this suitable for beginners?
Yes — start with one serve a day and adjust to your goals.
Can I return it if I do not like the flavour?
Unopened products can be returned within 30 days. See our refund policy for details.
- Free shipping over $150.00 Flat $10.00 anywhere in Australia below that.
- Out the door the same day Order before 2pm AEST on a business day and it ships that afternoon.
- 30-day returns Unopened and unused, in its original packaging.
- Genuine stock only Straight from the brand or their authorised Australian distributor.
Sameer S. (verified owner) –
Recommend them to buy elite supplements
Lue (verified owner) –
It’s great for the value
fiona s. (verified owner) –
If you want serious results this is probably one of the best protein powders to use on a bulk.
The texture takes a bit to get used to but it’s worth it.
Skye M. (verified owner) –
It’s great, tastes amazing and makes you feel better definitely recommend
As a first time user you want to use half of the recommended serving like it states on the packaging.
Sheikh M. (verified owner) –
Best for fulfilling your desired calorie intake and muscle mass building
Kaylin H. (verified owner) –
Best mass gainers I’ve used! Really helping me get the extra calories I need during the day.
Mitchell A. (verified owner) –
Perfect to replace a any meal or add easy calories to your diet.
Brian B. (verified owner) –
This product has a good taste and a good balance of vitamins etc added in addition to quality protein and calories. One of the few products not just focussed on low calories and protein.