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Build Muscle Stack

Build Muscle Stack

Regular price $99.90
Regular price $124.90 Sale price $99.90
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Build muscle and get jacked with this bundle. Plus you also get to save when you stack them together. 

Optimum Mass

Optimum Nutrition Serious Mass is here to help. With its powerful formula designed to support muscle building and recovery, Serious Mass is the ultimate solution for those seeking to size up their physique and achieve the results they've always wanted.

  • 1,250 calories per serving to fuel your weight gain goals
  • 50 grams of blended protein for muscle recovery support
  • Over 250 grams of carbohydrates with no added sugar for sustained energy
  • Creatine, glutamine, and glutamic acid, along with 25 essential vitamins and minerals for overall health
  • Delicious taste that makes adding calories enjoyable


Creatine Monohydrate

Make your training count with Creatine Monohydrate. This popular supplement boosts energy production and muscle strength, giving you an edge in the gym and enhancing your progress. Try it today and experience the insane benefits it can provide!

Creatine monohydrate works by increasing energy availability in your body during short bursts of activity. Creatine monohydrate works in the pathway of producing ATP, which is the main energy currency of the human body. By ensuring creatine stores are saturated, this means more energy is available to you while you are working through a set of bench press or squats.

The main benefits of creatine are experienced during high intensity or resistance training. These include:

  • supporting energy production
  • increasing lean body mass
  • enhancing muscle strength
  • improving physical performance
  • supporting general health and wellbeing


For orders over $95, we offer FREE postage Australia wide
For orders below $95, the regular postage fee Australia wide is $10
For orders below $95, the express postage fee Australia wide is $14.95


We aim to dispatch all orders within 1-2 days. Once your order is dispatched, you will get an email with a tracking number with a clickable link. Alternatively, you can simply visit AusPost and enter your tracking number.

If your delivery seems to be taking longer than expected, please email us at, and we would be happy to follow it up for you!

We have a 30 Day refund/ return policy. However, please find our full list of terms and conditions here.


Have a full read of our shipping policy here or reach out to us directly.
You can email or buzz us on 02 6290 6635.
Happy shopping Oxygen crew!