

🚀 Bulk smarter, not harder with Serious Mass!
Serious Mass by Optimum Nutrition is a high-calorie weight gainer delivering 1,250 calories, 50g of whey protein, and over 250g of carbohydrates per serving. Enhanced with 25 vitamins and minerals plus creatine and glutamine, it supports muscle growth, immune health, and rapid weight gain. Ideal for professionals committed to serious results, it’s designed to be mixed with calorie-dense add-ins for personalized nutrition.






















| ASIN | B000GIPJ02 |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #15,863 in Health & Household ( See Top 100 in Health & Household ) #12 in Sports Nutrition Weight Gainers #1,495 in Sales & Deals |
| Brand | Optimum Nutrition |
| Brand Name | Optimum Nutrition |
| Customer Reviews | 4.5 out of 5 stars 6,918 Reviews |
| Diet Type | Vegetarian |
| Flavor | Vanilla |
| Item Dimensions | 11.5 x 5.5 x 16 inches |
| Item Weight | 192 Ounces |
| Manufacturer | Glanbia Performance Nutrition |
| Material Type Free | Caffeine Free |
| 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 |
M**X
Gainer
The price is right. Taste is pleasant. Sort of thick with the recommended amount of water. 1 serving has me feeling completely full and I can eat a lot. I found I had to use a mixer for a smooth consistency, I wasn’t able to get it to mix well in the shaker bottle.
J**N
It does what it's intended to do.
Alright, when I read the other reviews for this product I invariably end up infuriated. This is a great product that provides 1500 calories at a relatively inexpensive price. This product will help you gain weight significantly faster than most other brands in the same price range. So everyone needs to stop complaining about the taste! Its not made to taste good its made to add some muscle to all you ectomorphs out there that can't gain weight to save their lives. That being said, I have tried every flavor and will provide a brief description of their tastes. Flavors: Chocolate: Second best of all the flavors that are available. It is appealing because its harder to get sick of chocolate then some of the other flavors they offer. Banana: By far the best flavor for this drink. Banana successfully tastes like a pretty good milkshake when mixed with milk but doesn't taste very good when mixed with water. Vanilla: An okay flavor, not as good as banana or chocolate but decent none the less. Strawberry: Avoid strawberry! It tastes horrible and for some unknown reason, it had a different and unappealing consistency compared to the other 3 flavors. So my recommendation is to alternate between banana and chocolate or to buy banana serious mass and add in some Optimum Nutrition protein powder which makes it taste even better. Again, I have gained 15 pounds using this stuff over the course of 2 months and my best friend has gained about 20 pounds in the same amount of time. It really does work if you take it every day. I generally take one heaping scoop in the morning with breakfast and one before I go to sleep.
P**.
Best Protein Powder
excellebt quality protein powder. I been purchasing this powder for the last so many years and it is same great quality. Good amount of protein and it helps build good lean muscle. it is easy to mix, easy to digest, great tasting, good amount of calories. Prices are a bit high but well worth it
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)
N**E
Good product
Very tasty and rich lovely protein powder
P**N
It's Working for Me - More Muscle Gain than Fat Gain
This product is working very well for me. I have been putting on mass faster than before using this product. I am not able to give figured on my weight progress due to the fact that I have not been keeping consistent track of my weight. I personally do not care how much I weigh as much as I care what I see when I look in the mirror. I could gain 10 pounds but just look like I gained fat instead of muscle. That's not what I want, and that's not what happened with this product. My arms have gotten noticeably larger (my girlfriend comments on them a lot lately), and I haven't even been doing isolation workouts for my arms. I have just been doing a lot of pushups and pullups. I have gained significant mass in my lats, and my chest has been getting bigger faster as well. I will give more updates as time goes on, especially since I will start back working out at the gym in order to do squats and other weighted workouts that I am unable to do at home. The main thing that you need to know with this product is that it is a mass gainer. While that may sound obvious, the reason I mention it is because some people complain about gaining fat around their belly while using this. If you want to keep the fat off, you can't just do mediocre workouts while taking this. You need to do high intensity cardio exercises as well depending how your own metabolism operates. I personally recommend looking up HIIT if you are not familiar with that type of training. I do not mind gaining a little bit of belly fat at the moment where my abs don't show perfectly, because I know that my primary focus right now is to gain as much mass as I can while taking this supliment. My metabolism is high enough that I am not gaining a lot of fat. I am noticing mostly muscle gain, but what little fat I am gaining around my mid section, I will be able to burn off with HIIT cardio in a short time after I bulk. Everyone has their own method. This is mine and it works for me. Feel free to leave me a comment if you have any questions. I may post progress photos later also.
N**E
EXCELLENT FOR GAINING WEIGHT
GREAT FOR MY 20 YEAR OLD SON WHO NEEDS TO GAIN WEIGHT BUT HAS TROUBLE DOING SO. HE SAYS A SHAKE OF THIS IS 1000 CALORIES WHICH IS AWESOME FOR HIM. HE IS 5 FT 10 AND FLUCTUATES BETWEEN 134 AND 142. WHEN HE DRINKS THIS EVERY DAY HE GAINS WEIGHT. HE WORKS OUT 3-4 TIMES A WEEK IN THE WEIGHTROOM TOO AND LOOKS GOOD.
J**O
Not the best, but it is the cheapest.
Cheapest for the amount given, so if you are trying to budget it's the way to go. I have tried 7 weight gain brands now and 9 flavors. It was a little hard to choke this one down, but possible for a half serving. I had to get the Vanilla and put in Strawberry syrup for the best taste I could gain and added calories. I would recommend Serious Mass if you buy a lot of weight gainers and are trying to budget as I am, and if you can stomach the taste (better than most others I tried). I have been spending too much to maintain an optimal weight (super high metabolic rate) so I needed to get the big bulk bag. With Orange Juice, the taste was cut a little and chocolate syrup was okay. Overall, I would recommend this of any if you can stomach it and need as much for the little cost as you can. I actually gained the most weight on BSN True Mass though, because I consumed it faster than anything else I tried due to having actually liked it. That was one I didn't mind drinking the shake at the end of a workout. I got the Cookies and cream vanilla one and put in Strawberry syrup for a couple hundred extra calories. I found I often skipped drinks with Serious Mass and other protein shakes due to lack of taste and desire to drink it. Sure weight gain for a lot is about "who cares on taste - bulk up now! Become hulk!". For me, it's about cost (I'm not rich here), and the desire to WANT to drink this not only at the end of a workout, but think of it as a treat before going to sleep as well. Hey, I'd rather reward myself than put myself down after I workout. Who wants a slap in the face after they worked hard and strained their body? I'd prefer the path of reward. So I'm like a puppy, I'm okay with that. In short, if you can spend a bit more, BSN True Mass... if not and can choke down an above par protein shake and need a lot of it, Serious Mass. Also, with Serious mass I noticed it had creatine listed as an ingredient on the bag. Drink plenty of Water in your workout - very important - to get best results. That water is soaked up like a sponge by the creatine. With any Creatine, if you are not drinking enough fluids, you are going to feel bad at the about a half an hour after that drink. Very important to get those fluids in you.
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