Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer | Desertcart Australia
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Vanilla, 8 Servings, 2.73 kg, Packaging May Vary
INSTANT MIXABILITY - Smooth, instantized powder that blends effortlessly—ideal for busy professionals on the go.
PROTEIN POWERHOUSE - Pack in 50-53g of high-quality protein to support muscle growth and recovery.
MASSIVE CALORIE SURGE - Fuel your gains with 1255-1272 calories per serving—perfect for serious size seekers.
VITAMIN MINERAL COMPLEX - 24 essential vitamins and minerals to keep your body optimized and energized.
ENHANCED PERFORMANCE BLEND - Infused with creatine and L-glutamine for next-level strength and endurance.
Optimum Nutrition Serious Mass is a high-calorie mass gainer delivering up to 1272 calories and 53g protein per serving, enriched with creatine, L-glutamine, and 24 vitamins and minerals. Designed for those struggling to gain weight or muscle, it offers instant mixability and no added sugar, making it the go-to formula for intense training and busy lifestyles.
Specifications
Additives
L-Glutamine,Creatine
Allergen Information
Contains: Eggs, Soy, Milk
Weight
2.72 kg
Units
2730 gram
Storage Instructions
In a cool, dry place
Serving Recommendation
2 Heaped Scoops-12 to 14 oz
Manufacturer contact
4 Waterside, Dublin 24, Ireland
Country of origin
gb
Brand
Optimum Nutrition
Format
Granule
Age Range Description
Adult
Serving Size
100 g, 334 g
Energy (kJ)
1589.00 kJ
Energy (kcal)
379.77 kcal
Fat
1.4000 g
Carbohydrate
77.0000 g
Protein
15.0000 g
Salt
0.4800 g
Have a Question? See What Others Asked
What's new with Serious Mass?
The label looks different compared to the previous one I got, is it still the same OPTIMUM NUTRITION product?
The tub is not full to the brim when opened, why is that?
What is the best way to prepare Serious Mass drink?
Are the ingredients tested and safe?
Reviews
4.4
All from verified purchases
A**R
Great flavour
I’ve been using this for a while and I’ve gained so much more weight in the gym. I is easy to mix with other flavours which has made drinking my shakes more enjoyable.
J**N
Brilliant
I saw the reviews now I know why partly its got took be the best tasting protein drink I have ever had. I got the vanilla cream 2x tubs of it it's not thick so doesn't make you feel gaggy, if anything sometimes it's sweet and tastes like milky bar from KFC 2ndly I've tasted it now I will see if it works will edit and update soon
M**
Great as always
I've been a user for a while now and product does what it says
R**G
Smooth and Tasty!
I'm pretty fussy when it comes to Protein Shakes.This one however, for a mass gain shake is surprisingly tasty.I tend to make it in the morning, chuck it in the fridge and then drink it in the evening... keeps it smooth, no bits and tastes good cold.I recommend this as a mass gainer shake.
F**4
Meal replacement
Atarted taking this as a meal replacement and believe me no hunger great protien fix and much more energised
C**L
Only 8 servings
Very misleading. Arrived in a huge tub but only 8 servings.My son said it’s super thick and hard to get down, but the vanilla flavour was nice. Won’t be purchasing again
J**N
Great gains
Brilliant for adding those extra calories to your diet if like me you struggle to eat the required amount when bulking. Its definitely made a huge difference, I can see the changes in my body since starting with the serious mass. I use one scoop an hour before my gym session and one scoop before bed with a normal protein shake after the gym. Its worth investing in a decent blender as the usual protein shaker just doesn't cut it as there is a lot of powder in one scoop. I also found that using milk makes the shake too thick so I just use water to mix although it doesn't taste as nice with water. Well worth the cost. I havent found a better alternative to this weight gainer and it includes creatine aswell saving you the extra cost there.
S**S
Great flavour
I’ve been using this for a while and I’ve gained so much more weight in the gym. I is easy to mix with other flavours which has made drinking my shakes more enjoyable.
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
Farhan Q.
The delivery time was excellent, and the packaging was secure.
2 months ago
Ayesha M.
The product exactly matches the description. Very satisfied with my purchase.
Mix two heaped scoops of Pro Complex with 12 to 14 oz. of your favourite beverage. Take two to three servings per day or use as recommended by a physician or licensed nutritionist.
Safety Warning
Always reseal after use, keep in cool dry place.
Legal Disclaimer
Food supplements should not be used as a substitute for a varied diet. Do not exceed stated recommended daily dose. Keep out of reach of young children. Storage: always reseal after use, keep in a cool dry place.
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I is easy to mix with other flavours which has made drinking my shakes more enjoyable."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"J***N"},"datePublished":"26 April 2025","name":"Brilliant","reviewBody":"I saw the reviews now I know why partly its got took be the best tasting protein drink I have ever had. I got the vanilla cream 2x tubs of it it's not thick so doesn't make you feel gaggy, if anything sometimes it's sweet and tastes like milky bar from KFC 2ndly I've tasted it now I will see if it works will edit and update soon"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"4.0"},"author":{"@type":"Person","name":"M*** "},"datePublished":"17 November 2024","name":"Great as always","reviewBody":"I've been a user for a while now and product does what it says"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"R***G"},"datePublished":"17 March 2025","name":"Smooth and Tasty!","reviewBody":"I'm pretty fussy when it comes to Protein Shakes.This one however, for a mass gain shake is surprisingly tasty.I tend to make it in the morning, chuck it in the fridge and then drink it in the evening... keeps it smooth, no bits and tastes good cold.I recommend this as a mass gainer shake."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"F***4"},"datePublished":"12 May 2025","name":"Meal replacement","reviewBody":"Atarted taking this as a meal replacement and believe me no hunger great protien fix and much more energised"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"3.0"},"author":{"@type":"Person","name":"C***L"},"datePublished":"21 August 2024","name":"Only 8 servings","reviewBody":"Very misleading. Arrived in a huge tub but only 8 servings.My son said it’s super thick and hard to get down, but the vanilla flavour was nice. Won’t be purchasing again"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"J***N"},"datePublished":"29 September 2024","name":"Great gains","reviewBody":"Brilliant for adding those extra calories to your diet if like me you struggle to eat the required amount when bulking. Its definitely made a huge difference, I can see the changes in my body since starting with the serious mass. I use one scoop an hour before my gym session and one scoop before bed with a normal protein shake after the gym. Its worth investing in a decent blender as the usual protein shaker just doesn't cut it as there is a lot of powder in one scoop. I also found that using milk makes the shake too thick so I just use water to mix although it doesn't taste as nice with water. Well worth the cost. I havent found a better alternative to this weight gainer and it includes creatine aswell saving you the extra cost there."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"S***S"},"datePublished":"8 February 2025","name":"Great flavour","reviewBody":"I’ve been using this for a while and I’ve gained so much more weight in the gym. I is easy to mix with other flavours which has made drinking my shakes more enjoyable."}],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.625,"bestRating":5,"ratingCount":8}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What's new with Serious Mass?","acceptedAnswer":{"@type":"Answer","text":"Not only does Serious Mass have a fresh new look, but it also has added 3 grams of creatine to support your performance."}},{"@type":"Question","name":"The label looks different compared to the previous one I got, is it still the same OPTIMUM NUTRITION product?","acceptedAnswer":{"@type":"Answer","text":"As you evolve, so do we. The part of our mission is to help active individuals better understand OPTIMUM NUTRITION products. Now choosing the right product for you is easier with more visible product benefits, features and flavours on each tub."}},{"@type":"Question","name":"The tub is not full to the brim when opened, why is that?","acceptedAnswer":{"@type":"Answer","text":"This is completely normal and is to do with the way the powder is vacuum packed into the tub. The powder settles over time. This does not impact the weight or number of servings listed on the label."}},{"@type":"Question","name":"What is the best way to prepare Serious Mass drink?","acceptedAnswer":{"@type":"Answer","text":"To get the optimal consistency and prepare your drink in easy and convenient way, we recommend using a blender."}},{"@type":"Question","name":"Are the ingredients tested and safe?","acceptedAnswer":{"@type":"Answer","text":"All of the ingredients in our products have been approved and considered safe for consumption by the European Food Safety Authority."}}]}]}
