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Item #:
5691502
Optimum Nutrition, Serious Mass, Chocolate Peanut Butter, 12 lb, 16 Servings
86% of respondents would recommend this to a friend
Item #:
5691502
GHS 2405
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 50 items left in stock.
Order now and get it around Wednesday, September 30
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Serious Mass is the ultimate muscle building and weight gain formula.
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What Stands Out
High-Calorie Formula
Serious Mass provides a significant calorie boost, essential for those aiming to gain weight and build muscle mass efficiently, making it ideal for hard gainers and athletes.
Quality Protein Blend
Packed with a blend of protein sources, this mass gainer supports muscle recovery and growth, offering a high-quality nutritional profile that enhances overall performance.
Delicious Flavor
The chocolate peanut butter flavor delivers a tasty experience, ensuring that users enjoy their nutritional intake while fulfilling their caloric requirements without compromising on taste.
Product Details
- Serious Mass is the ultimate muscle building and weight gain formula. This whey protein powder has 1,250 calories per 2-scoop serving and 50 grams of protein to support muscle recovery. This whey protein powder makes the ideal post-workout drink. Serious Mass provides you with the tools you need to support your weight gains goals. Packed with nutrition like vitamin C, vitamin D, vitamin B12, and more, Serious Mass gives you the fuel you need to build muscle and gain weight. This protein powder drink mix is not just a weight gainer. Serious Mass promotes all-around nutrition—helping you reach your fitness goals. Optimum Nutrition is part of the Glanbia global nutrition group and has been setting the Gold Standard in sports nutrition for more than 30 years — helping performance-focused athletes achieve their goals. We are proud to say that we are one of the few sports nutrition companies who own and operate our own production facilities. We take as much pride and care in crafting our award-winning supplements as our consumers do with crafting their fitness accomplishments.
| Cal per serv | 1270cal |
| Total protein per serving | 50g |
| Primary ingredient | Protein Blends, Whey |
| Sugar per serv | 26g |
| Brand | Optimum Nutrition |
| Flavor | Chocolate Peanut Butter |
| Product multifunction descriptor | weight gainer, muscle building, weight gain, post-workout drink |
| Serving size | 334.0 |
| Serv per cont | 16 |
| Size | 12 lbs (Pack of 1) |
| Dosage | 2 Scoops |
| Product line | Serious Mass |
| Vitamin & supplement type | Protein Supplements |
| Food form | Powders |
| Age group | Adult |
| Item Weight | 12 lbs (5.44 kg) |
Who Should Buy?
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Hard Gainers
Ideal for individuals struggling to gain weight and muscle mass, providing a caloric surplus in a convenient shake.
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Post-Workout Recovery
Great for athletes needing quick recovery nutrients post-exercise to replenish energy and support muscle repair.
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Busy Lifestyles
Perfect for those with limited time for meals, offering an easy way to consume essential nutrients on-the-go.
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Weight Watchers
Not suitable for individuals seeking to lose weight or monitor calorie intake, as it's high in calories.
Product Description
About This Item
Are you looking to pack on some serious muscle mass? Look no further than Optimum Nutrition Serious Mass in the mouthwatering flavor of Chocolate Peanut Butter. This 12 lb tub contains 16 servings of the ultimate mass gainer. If you're struggling to gain weight or build muscle, this high-calorie protein powder is the answer you've been searching for. Each serving of Serious Mass provides a whopping 1,250 calories, giving your body the fuel it needs to grow and thrive. Formulated by the experts at Optimum Nutrition, this mass building powder is packed with a blend of high-quality proteins, including whey protein concentrate, calcium caseinate, and egg albumen.
These proteins supply your muscles with the essential amino acids needed for optimal muscle growth and repair. Not only does this protein powder deliver a massive dose of calories and protein, but it also contains 252 grams of carbohydrates per serving. These carbs are essential for replenishing glycogen stores and providing a steady stream of energy to support your intense workouts. Mixing up a Chocolate Peanut Butter shake with Optimum Nutrition Serious Mass is like indulging in a delicious treat. The rich chocolate flavor combines perfectly with the creamy peanut butter taste, making each sip a delight for your taste buds. Whether you're a hard gainer or just looking to bulk up, this weight gainer shake is the perfect addition to your daily routine.
With the help of Optimum Nutrition Serious Mass, you'll be on your way to achieving your muscle-building goals in no time. Don't let your hard work in the gym go to waste. Fuel your body with the nutrients it needs to grow and recover with Optimum Nutrition Serious Mass in Chocolate Peanut Butter flavor. Start gaining mass and achieving the physique you've always desired.
Try it now!.
Dietary Supplement Disclaimer
Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Customer Questions & Answers
-
Question:
How many calories are in each serving?
Answer: Each 2-scoop serving contains 1,250 calories. -
Question:
How much protein does it contain?
Answer: Each serving provides 50 grams of protein. -
Question:
Does it contain any additional nutrients?
Answer: Yes, it includes vitamin C, vitamin D, vitamin B12, and more.
Optimum Nutrition Whey Protein Editorial Review
Optimum Nutrition, Serious Mass, Chocolate Peanut Butter, 12 lb, 16 Servings is an excellent choice for those looking to gain weight and build muscle effectively. Each serving packs an impressive 1270 calories and 50g of protein, making it a powerful post-workout drink. With its delicious Chocolate Peanut Butter flavor, it’s designed to satisfy your cravings while helping you achieve your fitness goals. Customers have noted the ease of mixing and the taste, making it a favorite among athletes. Additionally, it serves not only as a weight gainer but also as a versatile protein supplement that caters to various dietary needs.
Customer Reviews & Ratings
2413 customers ratings
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5 Star
75%
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4 Star
10%
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3 Star
5%
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2 Star
1%
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1 Star
6%
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Pros
- High protein content aids muscle growth
- Great flavor for enjoyable consumption
- Easy to mix for convenience
- Ideal for post-workout recovery
- Helps with weight gain goals
Cons
- Might feel heavy for some users after consumption
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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GHS 2405
Order now and get it around Wednesday, September 30
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 50 items left in stock.
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Features & Benefits
- 1,250 calories per 2-scoop serving
- 50 grams of protein per serving
- Over 250 grams of carbohydrates per serving
- Includes creatine monohydrate and glutamine for muscle recovery
- Packed with nutrition, including vitamins and minerals
- Promotes all-around nutrition and helps reach fitness goals
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