FREE SHIPPING OR GIFT ON ALL ORDERS OVER $150*

SAME DAY DISPATCH ON ORDERS BEFORE 3PM*

30 DAY MONEY BACK GUARANTEE

Serious Mass by Optimum Nutrition

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Serious Mass by Optimum Nutrition

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Optimum Nutrition
  • Need help?

    Call 1300 837 785
    or Email us
  • Free shipping or Gift

    on orders over $150
  • 30 Day Guarantee

    Don't Like it for any reason?
    Let us know.
  • Over 60 Stores

    Australia Wide
  • Best Price Guarantee

    Found a better price? We'll beat it! More Info


Same Day Dispatch

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Product Description

Details

20% Off Amino Energy




Because you can only consume so much food Optimum Nutrition have produced this weight gain 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 25 vitamins and minerals. What you're getting here are high quality calories in a tasty mass building shake.

Key Benefits

  • Muscle mass gains
  • 1250 calories per serve
  • High value proteins

Proteins contained in Serious Mass are "high bioavailability" and thus are readily deployable in your body once consumed. 

This product also contains those essential micronutrients needed for anabolic activity. Among these important agents are creatine monohydrate, choline, glutamine and inositol. 

This is the bag of good stuff you need to both pack on serious mass and smash through those heavy and intense gym sessions. 

Optimum Nutrition have forged their place as an industry leader and this is why a "who's who" of world class athletes are using their products, such as IFBB pro Steve Cook.

Cook has been one of the most recognisable faces in the sports and fitness industry over the last few years. His supplement intake increases as he begins to cut calories leading into a contest. This is because he looks to maximise gym time and ensure he leaves nothing to chance.



Ingredients

Ingredients

Shipping & Returns

Below is general information about Nutrition Warehouse's delivery policy. Your final delivery cost will be calculated in the checkout for your order.

How Much Does Delivery Cost?

If your order totals over $150, then you have the option of either Free Shipping or a Free Gift!

Delivery of orders under $150 is a flat rate of $9.95 anywhere in Australia.

When Will You Receive Your Order?

If you order is placed before 3pm (AEST) Mon-Fri - not including Public Holidays - then we will dispatch it the same day.

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.

What's Our Return Policy?

Here at Nutrition Warehouse we Live to make sure you are completely satisfied with your products and experience.

30 Day Flavour & Performance "5 Scoop Guarantee"

Don't like the taste or performance of your new product for any reason, then simply return your opened product with 5 scoops or less used to any store or our online warehouse and we will happily exchange or apply a store credit within 30 days of purchase. Don't forget to bring in your receipt or rewards card.

60 Day Product Guarantee

If you change your mind or simply aren't happy for any reason, you can simply return your unopened product to any store or our online warehouse for a full refund within 60 days of purchase.  Don't forget to bring in your receipt or rewards card.

Still have questions?

Please call our amazing Customer Service team on 1 300 837 785. We're available Mon - Fri from 9.00am-5.00pm AEST.

How to request a return:

If a product you receive is damaged during shipment, arrives after its expiration date, or is not what you ordered, we can send a replacement right away and provide a prepaid return label & postage bag free of charge.

To begin processing any type of return, please contact our Amazing Customer Service team on 1 300 837 785 and provide your name, the order number, and the reason for returning the product.

  • MONEY BACK GUARANTEE
    If you change your mind or simply aren't happy, you can simply return your unopened product for a full refund within 60 days of purchase!
  • 5 SCOOP GUARANTEE
    Don't like the taste or performance? Simply return your product with 5 scoops or less used and we’ll exchange or apply a store credit within 30 days!
  • EASY RETURNS
    Here at Nutrition Warehouse we love to make sure you are completely satisfied with your purchase. If it’s our fault, then the returns are on us!

Optimum Nutrition
  • Need help?

    Call 1300 837 785
    or Email us
  • Free shipping or Gift

    on orders over $150
  • 30 Day Guarantee

    Don't Like it for any reason?
    Let us know.
  • Over 60 Stores

    Australia Wide
  • Best Price Guarantee

    Found a better price? We'll beat it! More Info
Unique and sort after.Review by Pump Iron
Overall
Quality
This is an incredible weight gainer product for people who struggle with a fast metabolism and weight lifters alike... it has serious recovering properties which it make it the perfect post workout meal supplement and the taste rivals that of well known milkshake brands.
The perfect gainer. (Posted on 5/10/2019)
Works brilliantly Review by Kazza
Overall
Quality
This product actually works like a gem - highly recommend. (Posted on 7/07/2019)
Can't beat it! Review by Burnsy
Overall
Quality
This weight gainer is hands down the best weight gainer on the market - I absolutely struggled to make gains so I was recommended to give serious mass a go and sure enough 4 weeks later I have put on 5 kgs and feel great there's no nasty bloating or gastro issues with it either its so clean and the banana tastes amazing. 100% recommend anybody to give this a go. (Posted on 27/10/2018)
Beauiiiiiii productReview by Boots
Overall
Quality
100% happy (Posted on 4/09/2018)
Works for lean muscle massReview by Big420
Overall
Quality
I was training and restricting calories and was severely underweight, diagnosed with anorexia. Once I changed my mindset and wanted to gain weight this defiantly worked better than shoving "clean" food into me. (Posted on 31/08/2018)
BestReview by Sukh
Overall
Quality
I tried serious mass. I gained 4kg weight within 2 weeks.. Best in taste as well. Luv this. (Posted on 27/05/2018)
It worksReview by Jay
Overall
Quality
One of the few mass gainers that works. (Posted on 20/03/2018)
WEIGHT GAINER THAT ACTUALLY WORKSReview by mslaticha
Overall
Quality
I've taken most weight gainers under the sun and not one of them has compared to Serious Mass by Optimum Nutrition. I was stuck at 45kg and I couldn't get any higher, but then I started taking Serious Mass and I have now gained over 15kgs with training ofc. But this weight gainer has definitely proved worthy and I will continue to be a loyal customer to get dem gains. haha. Overall, if you're stuck at a weight and want some serious gains definitely give this weight gainer a try - you won't be disappointed. P.S. Chocolate flavour is da bomb.com (Posted on 29/01/2018)
The monster gainerReview by Lepsta
Overall
Quality
I have taken over 6 different gainers but this one overall for taste an putting on weight is the go to. (Posted on 12/11/2017)
WorkedReview by Kiefer
Overall
Quality
I'm 6"2' and currently 85kg. Before this product I was stuck at 77kg. I've tried so many weight gainers and they all made me sick or had no results. (Posted on 3/08/2017)
Best EverReview by Redz1988
Overall
Quality
The only brand Ill ever use. (Posted on 7/06/2017)

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