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🚀 Bulk Up, Power On, and Own Your Gains!
Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering 1,260 calories, 50g of whey protein, and over 250g of carbohydrates per serving. Enhanced with 25 vitamins and minerals including immune-supporting Vitamin C, Zinc, and Vitamin D, it’s designed for adults aiming to increase muscle mass and overall weight. Ideal for post-workout recovery and daily calorie surplus, this vanilla-flavored powder blends easily and supports serious bulking goals with trusted quality.






















| ASIN | B000GIPJ02 |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #1,313 in Health & Household ( See Top 100 in Health & Household ) #1 in Sports Nutrition Weight Gainers #154 in Sales & Deals |
| Brand | Optimum Nutrition |
| Brand Name | Optimum Nutrition |
| Caffeine Content Description | Caffeine Free |
| Customer Reviews | 4.5 out of 5 stars 19,801 Reviews |
| Diet Type | Vegetarian |
| Flavor | Vanilla |
| Item Dimensions | 11.5 x 5.5 x 16 inches |
| Item Weight | 192 Ounces |
| Manufacturer | Glanbia Performance Nutrition |
| Manufacturer Part Number | 1031920 |
| Material Type Free | Caffeine Free |
| Model Name | Optimum Nutrition Serious Mass Weight Gainer Protein Powder Vitamin C Zinc and Vitamin D for Immune Support |
| Model Number | 1031920 |
| Net Content Volume | 13.88 Liters |
| Number of Items | 1 |
| Package Type Name | Tub |
| Product Benefits | Immune Support, Muscle Growth, Weight Gain |
| Protein | 50 Grams |
| Protein Source | Whey |
| Recommended Uses For Product | Calorie Increase, Muscle Growth, Post-Workout, Weight Gain |
| Servings per Container | 16.0 |
| Supplement Formulation | Multi-Supplement |
| Total Servings Per Container | 16.0 |
| UPC | 748927023824 |
| Unit Count | 192.0 Ounce |
| Vitamins And Minerals | 0.9, 3.0, 30.0, 5.0, 700.0 Milligrams, 100, 100, 28, 63, 80 Percent Daily Value |
E**L
I truly like it 🥰
I’ve been using this mass gainer for a few weeks and I’m very satisfied with it. The taste is good, it mixes well, and it helps me reach my daily calorie and protein goals. I’ve noticed steady weight gain and improved energy during my workouts. That’s exactly what I was looking for to support muscle growth. Great value for the money, and I would buy it again.
M**Y
The taste is great, especially when blended with milk and fruit.
One of the best things about this mass gainer is how easy it is to use. It keeps me feeling energized after workouts and helps with recovery. Definitely worth trying if you’re looking to gain healthy weight and support muscle growth
J**U
Tastes better than expected and mixes easily
I've been using this protein shake for about a couple of weeks now, and overall I’m really satisfied with it. I usually take it after workouts or sometimes as a quick meal replacement, and it’s been working well for me.
J**N
Good gainer
If you're looking to add calories to your diet, these bad boy is what you need. Purchased the 12 lb bag for the value and I do want to note the serving size for this thing I almost double of other protein shakes, the scoop is enormous so it compares to a 6lb container of some other powders. I love this product because I only use one scoop instead of two and I like to make it in the blender and add ice cream or banana. I had some problems getting it to dissolve all of it in a shaker bottle so I opted for the blender method and with the vanilla flavor and adding some cookies and cream or cookiedough ice cream this is just delicious. Great way to add a massive load of calories to your diet . it has 50 grams of protein which is good but the kicker is the 1250 calories, again thats for a two scoop serving and the scoop is more a cup than a scoop. If you want a protein you can easily mix at the gym I suggest trying true mass by bsn, I like they're strawberry flavor. Otherwise for someone looking to bulk up, great product. Pros: Lots of calories The flavor is better than many, but it's a protein powder you're not drinking it for the flavor. (I tried the vanilla) Cons: the scoop is huge, I almost always use half a serving and use it to load on calories. It may take a while to get it to dissolve all the way in a mixer cup, specially if using the full two scoops. Overall great product, I keep this and a thing of true mass in hand when I'm trying to bulk up a bit during the winter, I cycle through the two based on how much I think I can down and so I don't get bored with the flavor. (also if I remembered to wash the blender, haha)
W**E
Pea Protein Mass – Plant-Based Muscle & Weight Gain Support
Pea Protein Mass is a great plant-based supplement that helps build muscle and gain healthy weight. It’s easy to digest, supports recovery, and is perfect for anyone looking for a dairy-free option to boost strength and energy
R**L
Have used this since 2021
I’ve been using this protein for years. Overall, with powerlifting and this, I’ve put on about 50 lbs. Recently I’ve lost 5 lbs due to nursing school (exhausted, less money, very busy). I have been trying different protein powders which I also liked, but after seeing the weight on the scale today, I’m back. I prefer the vanilla, because it can go in more smoothies or you can buy multiple coffee syrup flavors and add them to change it up. This time I’ll be having vanilla and brown sugar cinnamon. Excited to be working towards my goal of 150 lbs again now that I’m about to get my life back lol
A**A
Great Weight Gainer, Quality Product.
I purchased this item for my father, as he was looking to gain weight. We've used this brand before, and he's liked the taste, as well as the overall feel of it, so we decided to give it a shot. This powder is easy to use and incorporate into a daily diet. It's also packed with vitamins and protein, which is a nice bonus. The quality is also excellent. It dissolved easily in a shake, and also digests well. The texture is a little rough, though balanced and not too chunky when thoroughly incorporated, and overall, it is great. At $50 for 6 pounds, it's a bit pricey, but quality doesn't come cheap. I would recommend this product.
V**P
Optimum Nutrition
I'm try to gain weight so seen many positive reviews. But everyone is different in body chemistry. I took the advice of several reviews and started with 1/2 a portion, I put the milk in a large glass then poured the powder in & used my blender stick. It was very smooth & tasted like a melted vanilla milkshake & was so sweet, I had to force myself just to drink the half mixture. It is very sweet & filling. Tried it for 3 days & was so filling it was difficult to eat any food. So I stopped & took a break & will try 1/4 a recipe until I can stretch my stomach. I cant possible imagine drinking a full recipe without throwing up. It is supper sweet.
D**R
A helpful tool in gaining weight/muscle
With weight training and a very physical job I need a ton of calories (around 4000 a day) this mass gainer definitely helps, I find it tastes better with semi skimmed milk than water, and totals more calories consumed with 2 servings. The scoop is quite bigger, larger than what you'd used you put detergent in your washing machine, and the dose is 2 a day, you could just have one after a workout, but I have one at work around 10-11am which helps feel a gap well and being a shame is easier than food or snacks. I got the vanilla one, it tastes a tad different to the normal whey protein by ON, sweeter maybe but after a first few tries it's fairly nice, I don't use a blender just a shaker ball, and about 600ml of milk, it does a clump a bit and needs several shakes between a few swigs. Put the milk or water in first (this is common knowledge) but try and shake it hard/drink quick after dropping the powder in as the longer it fits the more it'll clump at the bottom and it's not fun trying to consume the gloop at the bottom, messy. Or just don't be lazy like my and blend it, might come out better.
A**E
tastes good and doesn’t have too much sugar
using this one for years now. for me it works perfect. am even mixing it sometime with fresh fruits to make a smoothy.
K**G
Zou het product langzr moeten testen om het echt goed te weten
Het is alsinds lekker en zeker effectief aangezien ik toch wat extra kilo’s erbij heb gekregen
F**L
Optimum Nutrition Serious Mass hochkalorisches Proteinpulver
Inhaltsstoffe und Nährwert: Das Proteinpulver bietet eine umfassende Mischung für den Masseaufbau. Jede Portion enthält eine hohe Anzahl von Kalorien, was besonders für den gezielten Masseaufbau wichtig ist. Zusätzlich sind 25 Vitamine und Mineralien enthalten, die zur allgemeinen Gesundheit und Unterstützung während intensiver Trainingsphasen beitragen. Das Pulver enthält sowohl Kreatin als auch Glutamin, die die Muskelregeneration und das Muskelwachstum fördern. Geschmack: Der Vanillegeschmack des Pulvers ist angenehm und nicht zu süß. Es ist unkompliziert zu mischen und ergibt einen cremigen Shake, der gut schmeckt und sich leicht trinken lässt. Für diejenigen, die häufiger Proteinshakes konsumieren, ist der Geschmack besonders wichtig, und Serious Mass enttäuscht hier nicht. Anwendung und Dosierung: Die Packung enthält ausreichend Pulver für 8 Portionen, was bei regelmäßiger Anwendung für eine gute Weile reicht. Die Dosierungsanweisungen sind klar und einfach zu befolgen. Ich finde es besonders praktisch, dass das Pulver sich leicht in Wasser oder Milch auflösen lässt und keine Klumpen bildet. Wirkung: Ich habe festgestellt, dass die regelmäßige Einnahme von Serious Mass positive Auswirkungen auf meinen Masseaufbau hat. Durch die hohe Kalorienanzahl pro Portion konnte ich mein Kalorienziel leichter erreichen und die zusätzlichen Vitamine und Mineralien haben meine allgemeine Gesundheit unterstützt. Kreatin und Glutamin haben zur besseren Muskelregeneration beigetragen, sodass ich mich schneller von intensiven Trainings erholen konnte. Verpackung: Die Verpackung des Proteinpulvers ist robust und praktisch. Sie lässt sich gut verschließen, um das Pulver frisch zu halten. Die Informationen auf der Verpackung sind übersichtlich und gut verständlich. Fazit: Optimum Nutrition Serious Mass ist eine hervorragende Wahl für alle, die gezielt Masse aufbauen möchten. Die hochkalorische Mischung mit 25 Vitaminen und Mineralien sowie Kreatin und Glutamin bietet eine umfassende Unterstützung für intensives Training und Masseaufbau. Der angenehme Vanillegeschmack und die einfache Anwendung machen dieses Produkt besonders empfehlenswert. Ich bin sehr zufrieden mit diesem Proteinpulver und kann es jedem uneingeschränkt empfehlen, der auf der Suche nach einem wirksamen und schmackhaften Masseaufbauprodukt ist.
R**M
Product is good but Waste of money
This is complete waste of money on Mass gainer just have 8 servings in 5 pond box rather one should buy whey and make a bulking banana or fruit shake but this is waste
Trustpilot
3 days ago
3 weeks ago