Weight | 2.72 Kilograms |
---|---|
Units | 2730.0 gram |
Manufacturer contact | 4 Waterside, Dublin 24, Ireland |
Brand | Optimum Nutrition |
Format | Powder |
Age Range Description | Adult |
Country of origin | United Kingdom |
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Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate, 8 Servings, 2.73 kg, Packaging May Vary
Price: | £32.95£32.95 (£1.21£1.21 /100 g)
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Brand | Optimum Nutrition |
Flavour | Chocolate |
Protein source | Whey |
Package type | Tub |
Item weight | 6 Pounds |
Recommended uses for product | Post-workout, Pre-workout |
Age range (description) | Adult |
Format | Powder |
Item dimensions L x W x H | 19.9 x 20 x 26.1 centimetres |
Number of items | 1 |
About this item
- PACKAGING MAY VARY: New look, with the same trusted Quality!
- Mass gainer with whopping 1250 CALORIES and 50g of PROTEIN per serving. Contains less than 5g fat!
- Comes as an instantised powder. Mix with fruit or nut butters for a tasty and calorific post-workout drink or take between meals to ENCOURAGE MUSCLE GROWTH
- PROUDLY CONTAINS NO ADDED SUGAR! Boasts 24 vitamins and minerals per serving
- GREAT VALUE FOR MONEY. Serious Mass protein powder delivers a high-calorie content and quality protein at competitive rates
- Provides calories, ENCOURAGING WEIGHT GAIN and refuels body’s glycogen stores
Frequently bought together
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Important information
Safety Information:
Always reseal after use, keep in cool dry place.
Indications:
Add two heaping scoops of Serious Mass to a blender filled with 710 ml 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.
Ingredients:
Maltodextrin, WHEY Protein Concentrate [MILK], Calcium CASEINATE [MILK], Fat-Reduced Cocoa Powder, Creatine Monohydrate, Flavouring, MILK Mineral Complex, Medium Chain Triglycerides [MILK], EGG Albumen, Sodium Chloride, Dipotassium Phosphate, Vitamin & Mineral Blend (Sodium L-Ascorbate, Ferric Pyrophosphate, D-Alpha-Tocopheryl Acetate, Nicotinamide, Zinc Oxide, Retinyl Acetate, Calcium D-Pantothenate, Sodium Fluoride, Manganese Sulphate, Potassium Iodate, Cyanocobalamin, D-Biotin, Chromium (III) Chloride, Pteroylmonoglutamic Acid, Cholecalciferol, Sodium Selenite, Cupric Citrate, Pyridoxine Hydrochloride, Thiamine Hydrochloride, Phylloquinone, Riboflavin, Sodium Molybdate), Glutamine Peptides [WHEAT GLUTEN], L-Glutamine, Magnesium Oxide, WHEY Powder [MILK], Inositol, L-Ascorbic Acid, Sweetener (Sucralose), Antioxidant (Tocopherol-Rich Extract), Calcium D-Pantothenate, Pteroylmonoglutamic Acid.
Directions:
Mix two heaped scoops of Pro Complex with 12 to 14 oz. of your favourite beverage. Take two to three servings per day or use as recommended by a physician or licensed nutritionist.
Legal Disclaimer
Product should not be used as a substitute for a varied diet. Do not exceed stated recommended daily dose. Keep out of reach of young children. Storage: always reseal after use, keep in a cool dry place.
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Product description
Product Description
The transformation is part of our mission to help active individuals better understand OPTIMUM NUTRITION products and how they support their goals. A Serious Mass new formula is now enriched with 3g Creatine per serving to support your performance. Struggling to gain muscle mass? Serious Mass is a quality whey protein powder designed to support muscle building. Help yourself bulk up! With a great range of flavours, the high-protein drink powder from Optimum Nutrition contains 1,260+ calories, 50g of protein, 250g+ of carbohydrates, 3g of Creatine, Glutamine plus 24 vitamins and minerals per serving when mixed with water. It’s made with no added sugar and less than 5g of fat per serving! Blend the quality protein with fruit or nut butters for extra calories and discover your optimum taste combination. Use after intense training and between meals. Serious Mass has the highest number of calories from Optimum Nutrition’s line of mass gainers. The instantised powder is available in 6 LB and 12 LB tubs. One serving contains two heaped scoops of powder.
Indications
Add two heaping scoops of Serious Mass to a blender filled with 710 ml 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.
Ingredients
Maltodextrin, WHEY Protein Concentrate [MILK], Calcium CASEINATE [MILK], Fat-Reduced Cocoa Powder, Creatine Monohydrate, Flavouring, MILK Mineral Complex, Medium Chain Triglycerides [MILK], EGG Albumen, Sodium Chloride, Dipotassium Phosphate, Vitamin & Mineral Blend (Sodium L-Ascorbate, Ferric Pyrophosphate, D-Alpha-Tocopheryl Acetate, Nicotinamide, Zinc Oxide, Retinyl Acetate, Calcium D-Pantothenate, Sodium Fluoride, Manganese Sulphate, Potassium Iodate, Cyanocobalamin, D-Biotin, Chromium (III) Chloride, Pteroylmonoglutamic Acid, Cholecalciferol, Sodium Selenite, Cupric Citrate, Pyridoxine Hydrochloride, Thiamine Hydrochloride, Phylloquinone, Riboflavin, Sodium Molybdate), Glutamine Peptides [WHEAT GLUTEN], L-Glutamine, Magnesium Oxide, WHEY Powder [MILK], Inositol, L-Ascorbic Acid, Sweetener (Sucralose), Antioxidant (Tocopherol-Rich Extract), Calcium D-Pantothenate, Pteroylmonoglutamic Acid.
Directions
Mix two heaped scoops of Pro Complex with 12 to 14 oz. of your favourite beverage. Take two to three servings per day or use as recommended by a physician or licensed nutritionist.
Safety Warning
Always reseal after use, keep in cool dry place.
Legal Disclaimer
Product should not be used as a substitute for a varied diet. Do not exceed stated recommended daily dose. Keep out of reach of young children. Storage: always reseal after use, keep in a cool dry place.
Box Contains
2.73 kg
Manufacturer Contact Information
4 Waterside, Dublin 24, Ireland
From the manufacturer


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Calories That Count
Serious Mass is the ultimate in weight gain formulas. With over 1,250 calories per serving to boost your calorie intake, 50 grams of protein to support muscle growth* and 250 grams of carbohydrates helping support muscle recovery**, you've got lots to gain from Optimum Nutrition's Serious Mass.
-
Now with Creatine
Serious Mass formula has now been enriched with 3g of creatine per serving to support your performance*.
-
Use Anytime
Quick, convenient and easy to prepare, Serious Mass is ideal:
- Between meals
- After weight training as a part of your recovery routine
- Before bed.
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
Serious Mass tubs have a gloss plastic neckband around the lid. Colour will be black. Check that this has not been tampered with.
-
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.
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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 | |
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 |
Product information
Technical Details
General Information
Additional Information
ASIN | B0015R36SK |
---|---|
Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | 61 in Health & Personal Care (See Top 100 in Health & Personal Care) 4 in Whey Nutrition Protein |
Date First Available | 2 Feb. 2008 |
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Customer reviews
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Reviewed in the United Kingdom on 23 February 2019
Top reviews from United Kingdom
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So I started Gym again with this shake (two scoops on a morning on rest days and 2x2 scoops morning and after gym sessions) and within a week started to notice results.
Now results wont just come from gym and this shake if you're like me, I've had to stick between 3500 - 5000 calories daily, with high carb high protein foods (as lean as possible meat) and a healthy side of multivitamins.
The result is I gained 11 pounds (5kg) in 4 weeks, which for me was mind boggling.
So if you feel it's extremely hard to gain weight and are looking around, contemplate giving this a try, eat healthy and work out, I can almost promise this will work. It is hard work though, and it will cost a bit more monthly, but I feel better right now mentally and physically than I ever have in my life.
I learnt the hard way. something I didn’t hear anyone on YouTube say out loud.
He’s my journey with serious mass:
I’m Male 5 foot 10 I weighed 75.25kg on 26/06/19. I was skinny. My arms were skinny.
• I went to the gym and I lifted 14kg dumbbell in each arm on flatbench chest press.
• Update on the 26/08/2019
I went to the gym I lifted 26kg on dumbbells in each arm quite easy. And my weight is now 81.25kg
I went to the gym 3-4 times a weeks to work on Chest, Triceps, Back, Biceps, Abs and NO Cardio
My theory is
I thought just because I weighed more I would have a big muscular chest. But I WAS WRONG. I gained 6kg and I still have the same chest. I JUST GOT A BELLY NOW! My chest is slightly bigger but it’s NOT worth it!
There has to be another way to be ripped WITHOUT gaining weight is my next theory
My friend is super ripped. Model typed. 6 pack. Big chest arms, and back and he weighs, 78kg and is 5foot 9
I’m NO WAY close compared to my friend and my chest is smaller. I have no abs. I have to lose fat now before it’s too late and harder.
So should you buy the mass gainer?!?
I STRONGLY!!! Advise to KNOW what you’re buying. DONT just buy it without someone mentoring you. DONT read instructions from the internet. You’re going to end up fat.
I need to lose weight now. And find another way of being ripped muscular without gaining weight.
You don’t need muscle gainer to be ripped. THATS A FACT! It’s not a magic supplement that will AUTOMATICALLY give you muscles. ITS NOT! You have to be VERY careful. You don’t want to end up overweight like me.
Taste is another let down as the strawberry flavour tastes very chemically! Trust me it's hard to drink! However I have advice on how to consume this and not gag for your dear life!
Take one scoop in the morning and one at night/after gym! Best is to mix it with frozen strawberries, banana's, blue berries, red berries(you can buy the pack from Sainsburys). Add Some oats if you like and a small Spoon of chia seeds and frozen avocado pieces. Finally low fat milk(orange cap, it's 1% fat). Use a blender for 20-30seconds... Your shake is now ready and the taste is now great and you can easily consume 600ml full bottle without a problem.
I will update on gains later as only been a couple of days! Hope this helps.
Vanilla is usually my go to flavour for shakes but this tastes very strange and nothing like what I am used to, very artificial chemical taste. After a good shake there was froth on the surface that stayed and didn't go away, undisolved product was separating and collecting on the bottom, the colour was aftificial looking yellow, I tried to persevere with the taste but no way I can drink it without heaving.
I can see how they pack in so many calories, the scoop is massive! In my photo the clear scoop comes with this product, the green one is the usual type you get with shakes for comparison.
Maybe I have a bad batch I don't know, Amazon have not got a button to contact seller only send it back so that's what I will have to do.

By SB on 23 February 2019
Vanilla is usually my go to flavour for shakes but this tastes very strange and nothing like what I am used to, very artificial chemical taste. After a good shake there was froth on the surface that stayed and didn't go away, undisolved product was separating and collecting on the bottom, the colour was aftificial looking yellow, I tried to persevere with the taste but no way I can drink it without heaving.
I can see how they pack in so many calories, the scoop is massive! In my photo the clear scoop comes with this product, the green one is the usual type you get with shakes for comparison.
Maybe I have a bad batch I don't know, Amazon have not got a button to contact seller only send it back so that's what I will have to do.
