Optimum Nutrition Serious Mass Protein Powder High Calorie
Optimum Nutrition Serious Mass Protein Powder High Calorie Weight Gainer with 25 Vitamins and Minerals, Creatine and Glutamine, Vanilla Flavour, 8 Servings, 2,73 kg
Authenticity Tips
VACUUM SEAL
Serious Mass tubs have a cardboard vacuum barrier that helps hold powder in place during shipping. This gloss white protective disk should be stuck to top of the tub.
NECKBAND
In order to conform to the direction of our sustainability policy and goals, we have decided to remove this part of the packaging. Packaging may vary for a certain period of time as this change takes into effect.
FILL SIZE
Due to vacuum packing the tub may appear to be two-thirds full when opened. This is normal as the powder settles and does not impact on or decrease the weight or number of serves listed on the label.
BATCH NUMBER AND DATE
Every Optimum Nutrition product will display a printed Batch Number and Date. The Best Before Date and Batch Codes are located on the side of the tub or the rear of the large bags.
What’s new with Serious Mass?
Not only does Serious Mass have a fresh new look, but it also has added 3 grams of creatine to support your performance.
The label looks different compared to the previous one I got, is it still the same OPTIMUM NUTRITION product?
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.
The tub is not full to the brim when opened, why is that?
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.
What is the best way to prepare Serious Mass drink?
To get the optimal consistency and prepare your drink in easy and convenient way, we recommend using a blender.
For optimal use, follow serving instructions on pack.
Are the ingredients tested and safe?
All of the ingredients in our products have been approved and considered safe for consumption by the European Food Safety Authority.
 Serious Mass |  Gold Standard 100% Casein |  Gold Standard 100% Whey |  Gold Standard Pre-Workout |  Gold Standard BCAA | |
| Customer Reviews | 4.4 out of 5 stars 18,245 | 4.6 out of 5 stars 639 | 4.6 out of 5 stars 130,291 | 4.4 out of 5 stars 6,635 | 4.5 out of 5 stars 2,843 |
| Price | £29.99 | £40.00 | £29.99 | £20.00 | £23.99 |
| When to use | Between meals, after training | Before bed | After or before training | Before training | During training |
| Key benefits | Mass gain | Muscle support & repair | Muscle support & repair | Energy, power & performance | Fatigue reduction & immunity |
| Key features | High calorie powder | Slow digesting protein | High protein & low sugar | Naturally sourced caffeine | Electrolytes & BCAAs |
| Nutritional info | 1250 calories / serv. | 24g of micellar casein / serv. | 24g of protein / serv. | 175mg of natural caffeine | 5g of BCAAs / serv. |
| Available sizes | 6lb, 12lb | 1lb, 2lb, 4lb | 1lb, 2lb, 5lb, 10lb | 330g | 266g |
| Weight: | 2.72 Kilograms |
| Brand: | Optimum Nutrition |
| Origin: | United Kingdom |
This is my second one I was going to switch to the whey but Ive decided to order one more. I don’t easily increase in weight but this helped (with training)
i managed to put on weight by using this, i make two shakes a day with one scoop each, with a consistency at the gym this has been perfect for me. i do mix it with Chocolate Nesquik
over about 5 months i went from 49kg to roughly 56kg, eating around 2750 calories a day, give or take. this mass gainer really helped me get those last 750 calories and was a really easy way to hit my target. However for the price you can make your own with many recipes online and to be honest, trying to guzzle down a thick, very sweet mass gainer can be quite nauseating at times.
overall this definitely isn’t for everyone but if you are like me, struggle to put on mass and need a quick and easy way of getting extra calories, give this a shot for sure! i would just recommend that you use a blender to mix the powder with milk, otherwise it dose not dissolve very well and ends up being very clumpy.