- SHOP BY GOAL
- CURRENT SPECIALS
- Weight Loss
- Pre Workout
- Amino Acids & BCAAs
- Health Supplements
- Testosterone Boosters
- Women's Supplements
- Energy, Endurance & Recovery
- Top 20
- NEW PRODUCTS
- GIFT VOUCHERS
- Muscle Growth Combos
- Natural Supplements
Optimum Nutrition Serious Mass is perfect for the classic “hard gainer” who struggles to gain muscle no matter how hard they train. Optimum Nutrition has expertly developed Serious Mass to provide the generous dose of protein and calories required to ignite an anabolic, muscle building environment. This premium quality mass gainer formula provides a whopping 50g of protein per serve, as well as 1,250 calories! This consists of an incredible 250g+ of carbohydrates, ensuring that your body has the energy, and building blocks it requires to create an anabolic, muscle building enviroment.
If you’re tired of not seeing the results that you expect from your intense training regime, Serious Mass is here to help.
- Serious Weight Gain Protein Formula
- 1,250 calories per serve
- 50g Protein-High Protein
- 25 Vitamins & Minerals + Creatine & Glutamine
- 250g + of carbohydrates
- No added Sugar
- Muscle Building / Build Muscle
- Strength Gains
Beyond the generous dose of protein and carbs, Serious Mass even includes 25 vitamins and minerals to ensure no nutritional deficiencies, as well as creatine and glutamine. Creatine will further aid you in increasing muscle strength and size, while glutamine delivers anti-catabolic (muscle preserving) properties to help prevent muscle breakdown from intense training.
With such quality ingredients and incredible doses, Shotgun Supplements thoroughly recommends Optimum Nutrition Serious Mass as the go to choice for typical hard gainer, ectomorph body types. If you are one of these genetic types and looking to increase muscle size and strength, Serious Mass is a worthy investment! Order your bag today.
For Muscle Growth : stack with other products like Amino Energy, Creatine and Glutamine for maximum results.
*Please Note the Nutritional profile and ingredients vary slightly between flavours for this product.
Directions For Optimum Serious Mass:
Add two heaping scoops of Serious Mass to a blender filled with 24 oz of water. Blend for 45-60 seconds. Then add a few ice cubes and, if desired, other calorie-contributing ingredients and blend for an additional 30-45 seconds.
Tips: Mixing two scoops of Serious Mass with 24 fl. oz. of nonfat or low fat milk instead of water will give you a thicker, creamier, higher-calorie shake. New users may find if beneficial to begin with 1/2 of a serving daily for the first week and then gradually increase to 1 or more full servings several times a day.
Serious Mass is a substantial weight-gain supplement that can be used to feed serious calorie needs in a variety of different ways.
Between Meals: Drink 1/2-1 serving of Serious Mass between meals to maintain positive nitrogen balance and support a high-calorie diet. Post-Workout: Begin drinking 1/2-1 serving of Serious Mass 30-45 minutes following exercise to support maximum recovery. Before Bed: Drink 1/2-1 serving of Serious Mass about 45-60 minutes before bed to provide nutrients to recovering muscle throughout the night.
Note: For best results use Serious Mass combined with intense weight training (3-5 times per week) and a sensible whole foods diet. Also, keep in mind that sufficient recovery between workouts impacts your ability to gain lean mass. Allowing at least 48 hours between workouts involving the same body parts is recommended
Credit cards & Debit cards:
We accept Visa, Master Card, Diners Club, Discovery, and Amex payments through our website. Our checkout pages and securely served and encrypted using SSL, Credit Cards are verified in real time using DPS.
Payments can be made by direct credit bank transfers.
Simply Checkout, and then make a deposit, with your order number as a reference.
Our Bank details are:
Bank of New Zealand
Account Number: 02-0316-0461217-000
Pay over the Phone:
To make an order over the phone, simply call 0800 SPORTS (0800 776 787) to speak with one of our friendly customer service team. They will be able to help you with any questions you may have, as well as placing orders over the phone. Phone payments available during business hours, 8am-5:30pm, Monday-Friday.
Fast delivery, taste OKay Sunny Lu, Christchurch
I have tried both strawberry and chocolate, strawberry tastes better for me. 2 scoopers per day seems too much energy for me. I gained more fat than muscle. I guess I do not have to stick to 5 meals per day, instead, 3 meals per day and one scoop Mass Gainer would be enough energy content to compensate energy loss .
2017-02-09 17:38:53.0 2017-02-09 17:38:53.0
Average josh ward, Dunedin
Great amount of protein and calories, but the serving size (2 scoops) is a mission to finish, and vanilla tastes rancid.
2016-08-23 11:34:57.0 2016-08-23 11:34:57.0
Flavour Brodie Ratcliffe, Blenheim
Great Macros in it, however I had the strawberry flavour and it was the worst smelling and tasting shake I've ever had. It was so horrible I simply brought another brand as I couldn't stomach it.
2016-06-16 18:46:27.0 2016-06-16 18:46:27.0
sticky mika haitana, Rotorua
good amount of protein and calories but the scoop is huge so it runs out very quickly. doesnt really mix well either. had to use ninja on high blend for it to mix properly without any lumps. otherwise shaking normally takes a good 10-15 minutes to properly mix it. which is a big no no from me. and also flavor just seems off. just not the protein for me
2016-05-30 23:08:58.0 2016-05-30 23:08:58.0
Serious Mass Niko Lerm, Lower Hutt
Recommended but don't get vanilla flavour, it is nasty as hell.
2016-03-13 13:20:16.0 2016-03-13 13:20:16.0
THE BEST mass gainer Jagjit Singh, Auckland
this mass gainer is the best for me, gained so much size. the quality of this product is incredible compared to other gainers. very low in sugar and fat , high in protein , so much calories and carbs , very good work by optimum. very expensive but worth buying. tried vanilla and banana , tastes great , mixes very well. worth buying , definitely yes
2016-02-14 12:43:36.0 2016-02-14 12:43:36.0
Great value and quality E B, Auckland
JUST DONT GET VANILLA
2016-01-22 15:04:15.0 2016-01-22 15:04:15.0
Works great! Tim Lam, Wellington
Tastes great, easy on stomache, mixes moderately well and love the zip lock on the bag which definitely makes it easier to keep the powder fresh!
Gained 6kg in 4 weeks so definitely working for me! Going to get some more right now!
2015-09-14 15:24:44.0 2015-09-14 15:24:44.0
... Jeff R, Nelson
Have only had this for a week so can't comment on gains (will be great I'm sure) so can only talk about flavour and packaging. Chocolate tastes great. Not happy with the ziplock bag though. I have only opened it 3 times (I only use this on workout days) and the zip is already broken. Pretty annoying..... Need to find something else to store it in now...
2015-05-29 15:37:03.0 2015-05-29 15:37:03.0
Currently, all New Zealand orders are shipped through CourierPost.
Shotgun ships Free by courier every order anywhere in New Zealand, including all orders to South Island and Rural Delivery addresses.
Click here to view the full Shipping details.