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$75.71 ($0.39/Ounce)
Get it as soon as Saturday, Jul 27
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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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20,072
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70,728
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211,000
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43,904
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128
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48,395
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Price
| $47.79 | $37.60 | $44.99 | $28.99 | $24.99 | $27.59 |
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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
Compare with similar items
This Item  Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate Peanut Butter, 12 Pound (Packaging May Vary) |  |  |  |  |  | |
| Price | -10% $75.71 List: $83.99 | $72.99 | $72.99 | -13% $19.98 List: $22.98 | $84.99 | -8% $47.79 List: $51.99 |
| Price Per Unit | $0.39 / Ounce | $0.46 / Ounce | $0.46 / Ounce | $0.70 / Ounce | $1.06 / Ounce | $0.50 / Ounce |
| Delivery | Get it as soon as Saturday, Jul 27 | Get it as soon as Saturday, Jul 27 | Get it as soon as Saturday, Jul 27 | Get it as soon as Saturday, Jul 27 | — | Get it as soon as Saturday, Jul 27 |
| Customer Ratings | ||||||
| Ingredient quality | ||||||
| Flavor | ||||||
| Value for money | ||||||
| Sold By | Amazon.com | Ronnie Coleman Signature Series | Ronnie Coleman Signature Series | Amazon.com | Phoenix Seller Store | Amazon.com |
| flavor | Chocolate Peanut Butter | Dark Chocolate | Cookies & Cream | Chocolate | Chocolate | Chocolate |
| protein source | whey | whey | whey | whey | blend, whey | whey |
| weight | 12 pounds | 4.63 kilograms | 4.54 kilograms | 1.78 pounds | 0.2 kilograms | 6 pounds |
| target gender | unisex | unisex | unisex | unisex | unisex | unisex |
| energy info | 1.25 kilocalories, 1.25 kilocalories | — | — | 18 kilocalories | — | 1250 kilocalories |
| nutritional fat info | 6.0 grams, 6.0 grams | — | — | 4 grams | — | 4.5 grams |
| ingredients | Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavors, Vitamin and Mineral Blend (Dipotassium Phosphate, Magnesium Aspartate, Dicalcium Phosphate, Calcium Citrate, Ascorbic Acid, Niacinamide, Zinc Citrate, Beta Carotene, d-Calcium Pantothenate, d-alpha Tocopheryl Succinate, Selenomethionine, Copper Gluconate, Ferrous Fumarate, Manganese Amino Acid Chelate, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Medium Chain Triglycerides, Creamer (Sunflower Oil, Maltodextrin, Modified Food Starch, Dipotassium Phosphate, Tricalcium Phosphate, Tocopherols), Lecithin, Salt, Sucralose, and Acesulfame Potassium. | — | — | Super whey protein blend, cocoa, maltodextrin, lecitin, natural flavor, salt, cellulose gum, ascorbic acid, acesulfame potassium, sucralose, zinc oxide, vitamin D3 | — | Maltodextrin, Proprietary Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Sweet Dairy Whey, Egg Albumen), Cocoa, Natural & Artificial Flavor, Vitamin/Mineral Blend (Di-potassium Phosphate, Magnesium Aspartate, Di-calcium Phosphate, D-calcium Pantothenate, Calcium Citrate, Manganese Amino Acids Chelate, Zinc Citrate, Ascorbic Acid, Niacinamide, Biotin, D-alpha Tocopheryl Succinate, Beta Carotene, Selenomethionine, Ferrous Fumarate, Molybdenum Amino Acid Chelate, Copper Gluconate, Pyridoxine Hydrochloride, Thiamin Mononitrate, Riboflavin, Folic Acid, Chromium Polynicotinate, Cyanocobalamin, Cholecalciferol), Acesulfame Potassium, Mct Powder, Cellulose Gum. |
Videos
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0:41
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A great tool for trying to add size and mass
✅ Kyle's Reviews
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My Results Using Optimum Serious Mass
VNP | Very Normal People!
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What you need to know about this ON Serious Mass Protein
Tyler's Reviews
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Product damaged in transit. Please replace.
Fatma Gueye
Reviews with images
A Perfect Duo for Gaining Muscle Mass!
I am on a journey to increase my muscle mass and decided to combine two powerhouse supplements - Top Shelf King Maker and Optimum Nutrition Serious Mass. The results have been nothing short of incredible, and I can't recommend this combo enough to fellow fitness enthusiasts!The supp to combine with ON's serious Mass is Top Shelf King Maker ... it is an anabolic supplement for men to increase lean muscle growth and it certainly lives up to the claim. Its carefully crafted blend of ingredients is specifically designed to promote lean muscle development, and I've experienced remarkable gains in a short period of time. With King Maker, I felt an increase in strength and endurance, which helped me push harder during my workouts.Optimum Nutrition Serious Mass, on the other hand, is a renowned mass gainer that provides a substantial calorie and protein boost. It's a perfect complement to Top Shelf King Maker, as it offers the essential fuel my body needs for muscle growth. This supplement helped me hit my daily calorie and protein targets with ease, ensuring that I never fell short on the nutrients required to pack on muscle.The combination of these two products has been next level for me. Not only have I seen noticeable increases in muscle size and definition, but I've also experienced faster recovery times between workouts. This means I can hit the gym more frequently and maintain a consistent workout routine, which is crucial for muscle growth.One concern that some may have with mass gainers is the potential for unwanted fat gain. However, by using Top Shelf King Maker alongside Serious Mass, I've been able to maintain a lean physique while still adding mass. This is a testament to the targeted approach of King Maker in promoting lean muscle gains.In conclusion, if you're serious about gaining muscle mass and you want to do it the right way, the combination of Top Shelf King Maker and Optimum Nutrition Serious Mass is a winning strategy. These two supplements work in harmony to help you achieve your muscle-building goals, and the results are simply outstanding. I've never been more satisfied with my progress, and I owe a big part of it to this dynamic duo. Give it a try, and you won't be disappointed!
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Reviewed in the United States on June 5, 2024
Flavor Name: VanillaSize: 8 Servings (Pack of 1)Verified Purchase
Reviewed in the United States on September 18, 2016
Flavor Name: Chocolate Peanut ButterSize: 16 Servings (Pack of 1)Verified Purchase
Reviewed in the United States on June 24, 2024
Flavor Name: VanillaSize: 8 Servings (Pack of 1)Verified Purchase
Top reviews from other countries
Francisco J. Garcia
Un gran complemento para aumento de masa y aporte energético vitaminas y minerales
Reviewed in Spain on June 24, 2024Flavor Name: VanillaSize: 8 Servings (Pack of 1)Verified Purchase
Fafa28
Nickel
Reviewed in France on May 24, 2024Flavor Name: StrawberrySize: 8 Servings (Pack of 1)Verified Purchase
anne
article conforme
Reviewed in Belgium on May 21, 2024Flavor Name: VanillaSize: 8 Servings (Pack of 1)Verified Purchase
Joel
Good quality, good flavour with milk
Reviewed in the United Kingdom on March 1, 2024Flavor Name: StrawberrySize: 8 Servings (Pack of 1)Verified Purchase
Vincent
Un excellent supplément pour la prise de masse
Reviewed in France on June 29, 2023Flavor Name: VanillaSize: 8 Servings (Pack of 1)Verified Purchase
