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$46.37 ($0.48/Ounce)
Get it as soon as Saturday, Jul 13
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From the brand
From the manufacturer
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ON Serious Mass Protein
Ultimate muscle building and weight gain formula
SERIOUS MASS provides you with the nutrition you need to support your weight gains goals in the gym
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Serving size is 2 scoops
Supports muscle building and weight gain goals
Our Mass Gainer has 1,250+ calories per serving to help fuel your workouts & boost caloric intake
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The nutrition you deserve
Post-workout and between meals shake
Mix 2 scoops of the powder into 24 fluid ounces of cold water or milk using an electric blender.
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Mix into any beverage
More calories. More protein. More carbs.
Per 2-scoop Serving:
- 1,200+ calories & 250g+ of carbs
- 50g of high-quality protein & 3g Creatine
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Informed Choice Approved
Optimum Nutrition prides itself on quality control
We hold ourselves to the highest production standards – so you can unlock your body’s full potential
1 Supercharge your gains 2 High Calorie Gainer 3 Help Build Muscle 4 Maximize caloric intake 5 Banned Substance Tested
Stack your gains across Optimum Nutrition:
 SERIOUS MASS PROTEIN |  CREATINE MONOHYDRATE |  100% WHEY PROTEIN POWDER |  GOLD STANDARD PRE WORKOUT |  ENERGY + HYDRATION DRINK |  AMINO ENERGY POWDER | |
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Customer Reviews
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20,037
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69,812
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209,551
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43,841
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122
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48,246
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Price
| $46.37 | $37.63 | $44.57 | $28.99 | $24.99 | $29.99 |
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OPTIMUM BENEFIT
| Mass gainer protein powder | Support muscle building | Helps build & maintain muscle | Pumps, energy & performance | On-the-go energy drink | Anytime energy - new flavor |
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PRIMARY SUPPLEMENT
| High calorie & performance | Micronized creatine powder | 100% Whey protein powder | Preworkout powder | Caffeine with added hydration | Energy powder with hydration |
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USAGE
| Before or after your workout | Supplement with your protein | Before or after your workout | 20 minutes before your workout | Anytime energy | Anytime energy |
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Gluten Free
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
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Stackable with ON products?
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Optimum Nutrition's Athlete Spotlight
Cameron Brink- Stanford Women's Basketball Player
Cameron Brink is a student-athlete at Stanford University, entering her senior year as the face of the Cardinal women’s basketball team.
Cameron's advice: "Remember to find something you love and have fun! It’s critical to then eat well – nutrition plays such a critical role in anything you do."
Taylor Fritz - Tennis Player
How do ON’s products help Taylor dig deeper and reach his nutrition & performance goals?
Whether it’s after a gym session, while traveling or after a match, Taylor trusts Optimum Nutrition products to provide him with the high-quality protein he needs to support performance and recover at his best
Inspiration from this brand
Compare with similar items
This Item  Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Chocolate, 6 Pound (Packaging May Vary) |  |  |  |  |  | |
| Price | -11% $46.37 List: $51.99 | -13% $47.01 List: $53.99 | $82.94 | -7% $74.13 Typical: $79.97 | -11% $48.03 List: $53.99 | -11% $74.96 List: $83.99 |
| Price Per Unit | $0.48 / Ounce | $0.49 / Ounce | $0.43 / Ounce | $0.39 / Ounce | $0.50 / Ounce | $0.39 / Ounce |
| Delivery | Get it as soon as Saturday, Jul 13 | Get it as soon as Saturday, Jul 13 | Get it as soon as Saturday, Jul 13 | Get it as soon as Saturday, Jul 13 | Get it as soon as Saturday, Jul 13 | Get it as soon as Saturday, Jul 13 |
| Customer Ratings | ||||||
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| Ingredient quality | ||||||
| Value for money | ||||||
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| Sold By | Amazon.com | Amazon.com | Phoenix Seller Store | Amazon.com | Phoenix Seller Store | Phoenix Seller Store |
| flavor | Chocolate | Vanilla | Strawberry | Chocolate | Banana | Chocolate Peanut Butter |
| protein source | whey | whey | whey | whey | whey | whey |
| weight | 6 pounds | 6 pounds | 12 pounds | 12 pounds | 2.72 kilograms | 12 pounds |
| target gender | unisex | unisex | unisex | unisex | unisex | unisex |
| carbohydrate info | — | 253.0 grams, 253.0 grams | 252.0 grams, 252.0 grams | 251 grams | 252.0 grams, 254.0 grams | 250.0 grams, 250.0 grams |
| energy info | 1250 kilocalories | 1.26 kilocalories, 1250.0 kilocalories | 1.25 kilocalories, 1.25 kilocalories | 1.26 kilocalories, 1250.0 kilocalories | 1.25 kilocalories, 1250.0 kilocalories | 1.25 kilocalories, 1.25 kilocalories |
Videos
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Review: Optimum Nutrition Serious Mass Protein Powder
PD Reviews
Videos for this product
3:49
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Customer Review: Be safe!!! Take the added supplement in doses
Knight
Reviews with images
What They Don't Tell You
What they tell you. It tastes great and is a good supplement to build mass.What they don't tell you. Each serving consist of 2 huge heaping scoops of powder and 24 ounces of fluid (water or milk). This combination results in 48 ounces of liquid delight that they claim is a single serving. On what planet is 48 ounces a single serving? To put this in perspective, that is 2 full to the brim Shaker bottles that are intended to be consumed as one serving. 340 grams of powder from one serving translates into 3/4 of a pound of powder. Again to put this into perspective, the huge tub of powder you will recieve equals ONLY 8 advertised servings.The other thing they don't tell you is the powder is so fine and gummy that the only way to prepare the drink is to use a full sized blender. No Shaker bottles here. Preparing this mix is a mess. The powder is so fine that it creates a gummy mess that adheres to the side of the blender like Venom on Eddie Brock. Prepare to spend a significant amount of time coaxing the paste free to get it to properly mix.Great protein mix, but I sometimes I feel like it would be easier to eat 5 chicken breasts too reach the same calorie goal, than to put down 48 ounces. I realize that it can be broken up throughout the day, but so can multiple meals. There is also the option of using another protein supplement with a realistic serving size, multiple times a day. In the end, I feel like that is all they have done with this product. They have combined a multiple dose, throughout the day protein powder into a single serving, trying to advertise it as a solution that they obviously have not solved.
Top reviews from other countries
Client d'Amazon
Très bon produit pour les ectomorphe !
Reviewed in France on February 14, 2017