Optimum Nutrition Serious Mass 2.72kg
Building serious size requires serious calories — and Optimum Nutrition Serious Mass delivers exactly that. With a staggering 1,250 calories per serving and 50g of blended protein, this is one of the most complete and trusted mass gainers on the market, engineered specifically for hard gainers and those in an intensive bulking phase.
The protein blend combines whey concentrate, caseinate, and egg albumen for both fast and sustained amino acid delivery across the recovery window. Over 250g of carbohydrates per serving provides the caloric surplus needed to drive muscle growth, while creatine, glutamine, and 25 essential vitamins and minerals round out a formula that goes well beyond basic macros.
- 1,250 calories per serving — serious fuel for serious size
- 50g protein — whey concentrate, caseinate & egg albumen blend
- 250g+ carbohydrates | No added sugar
- Enhanced with creatine & glutamine for performance and recovery
- 25 vitamins and essential minerals for complete nutritional support
- 2.72kg — approximately 8 servings
Recommended Use:
Add two heaped scoops to a blender with 710ml of water. Blend for 45–60 seconds, add ice if desired, then blend for a further 30–45 seconds.
Allergens: Contains Milk, Egg, Soy, Wheat (Gluten). May contain nuts and peanuts.
Delivery estimates are from the date of dispatch, NOT the date of purchase. All orders are subject to a two days handling time.
We mainly use Royal Mail for all deliveries, however depending on order size and availability, we also use Parcel Force/ DPD as our main courier partners.
We will email confirmation of your order on receipt and for those orders being delivered by a courier company you will receive further delivery update emails via the courier company directly (usually with a delivery slot). Please leave your mobile number at ordering stage if you would like to receive notifications.
Should you not be at home to receive your delivery, our couriers will try again the following day or give you the option to rearrange a delivery time/ collection point.
Should you not be in to sign/ receive your delivery, please let us know via email info@gymsupplements.co.uk and we will arrange to leave your parcel with a neighbour if it is possible to do this.
Should you choose to call, please do not leave a voicemail. Instead, please email us along with your order number.
If you leave a signed authorisation note the couriers will leave your parcel in an alternate place at your delivery address however this will be entirely at your own risk.
Delivery Rates;
- Free Delivery on all orders over £70+
- £4.99 for all orders below £70
While we work hard to ensure all orders are dispatched as quick as possible, sometimes it is out of our hands & even the most reliable couriers can end up having delays.
In this instance, please get in touch with us via email and we will reach out to the courier for an update.
