SERIOUS MASS – High-Protein Weight Gain Powder – Vanilla – 6 lbs./8 Servings

SERIOUS MASS – High-Protein Weight Gain Powder – Vanilla – 6 lbs./8 Servings

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Product Info

About This Product

  • Supports muscle building and weight gain goals
  • 1,250 calories, 50g of protein, and 253g of carbs per serving
  • Delivers 25 vitamins & minerals, creatine, and glutamine
  • Vanilla flavor

If you’re aspiring to be bigger, have a highly active metabolism, weaker appetite, or on-the-run lifestyle, SERIOUS MASS™ by Optimum Nutrition is for you. This Vanilla weight gain powder packs 1,250 calories, 50g of protein, and 253g of carbohydrates in every serving to help boost calorie intake, support muscle building, and fuel intense workouts.

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Directions

Add about two heaping scoops of Serious Mass Protein Powder to a blender filled with 24 fl. oz. of cold water, milk or other beverage. Blend for 30-45 seconds until dissolved. Tips: New users may find it beneficial to begin with 1/2 of a serving for the first week and then gradually increase to 1 serving.

Warning

Consult your physician before using this product if you are taking any medications or are under a physician’s care for a medical condition. Not for use by those under the age of 18 or women who are pregnant, trying to get pregnant, or are nursing. Contents sold by weight not volume. Some settling will occur. Store in a cool, dry place. Serving scoop included, but may settle to the bottom during shipping.

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Supplement Facts

Serving Size: About 2 Heaping Scoops
Number of Servings: 8 Servings
Amount Per Serving
% Daily Value
CALORIES   
**%
TOTAL FAT   
6%
SATURATED FAT   
15%
CHOLESTEROL   
67%
TOTAL CARBOHYDRATE   
92%
TOTAL SUGARS  - INCLUDES 8G ADDED SUGARS
16%
PROTEIN   
100%
VITAMIN A  - AS VITAMIN A ACETATE
38%
VITAMIN C  - AS SODIUM ASCORBATE
33%
VITAMIN E  - AS DL-ALPHA TOCOPHERYL ACETATE
27%
THIAMIN  - AS THIAMIN HYDROCHLORIDE
33%
RIBOFLAVIN   
69%
NIACIN  - AS NIACINAMIDE
25%
VITAMIN B6  - AS PYRIDOXINE HYDROCHLORIDE
24%
FOLATE  - AS FOLIC ACID
43%
VITAMIN B12  - AS CYANOCOBALAMIN
67%
BIOTIN  - AS D-BIOTIN
200%
PANTOTHENIC ACID  - AS D-CALCIUM PANTOTHENATE
60%
CALCIUM  - AS CALCIUM CARBONATE, CALCIUM PHOSPHATE
54%
IRON  - AS FERROUS FUMARATE
32%
IODINE  - AS POTASSIUM IODIDE
15%
MAGNESIUM  - AS MAGNESIUM PHOSPHATE
33%
ZINC  - AS ZINC OXIDE
27%
COPPER  - AS COPPER GLUCONATE
44%
MANGANESE  - AS MANGANESE SULFATE
17%
SODIUM   
30%
POTASSIUM   
20%
CREATINE MONOHYDRATE   
**%

Other Ingredients:

Maltodextrin, Whey Protein Concentrate, Natural and Artificial Flavor, Sunflower and/or Soy Lecithin, Acesulfame Potassium, Sucralose. Contains: Milk, Soy.

Specifications

Brand:
Optimum Nutrition
Form:
Powder
Flavor:
Vanilla
Serving Size:
About 2 Heaping Scoops
Number of Servings:
8 Servings
Price per Serving:
($9.37 / serving)
Product Weight:
106  OZ
Item # :
OP-7141 / 1483585

Who Might Benefit From This Product

  • Bulking Bodybuilders: Designed for those in the bulking phase, this high-calorie formula offers the necessary nutrients to help promote muscle growth and improve workout intensity.
  • Active Individuals: Ideal for people with high activity levels who need additional calories and protein to support their energy needs and muscle recovery after intense physical activities.
  • Athletic Individuals: Suitable for athletes who require substantial nutritional support for performance and muscle development, providing key vitamins, minerals, and nutrient-rich calories.
  • Busy Adults: Perfect for people on-the-go who need a convenient, nutrient-dense option to ensure they meet their calorie and protein goals without extensive meal prep.
  • Health-Conscious Vegans: This product could benefit vegans who focus on high-calorie intake and protein from non-animal sources to bolster their diet, fueling their workout and recovery.

Product Reviews

152 Ratings
4.3out of 5 stars
152 Ratings

Rated 5 stars by 66% of reviewers

Rated 4 stars by 18% of reviewers

Rated 3 stars by 5% of reviewers

Rated 2 stars by 4% of reviewers

Rated 1 star by 8% of reviewers

1-10 of 152 Reviews
Customers talk about
Jul 28, 2026
Rated 5 out of 5
Yummy
It's so delicious?. Lots of empty calories though, so i'm not sure it's effective at attaining overall health
Location
Alexandria, VA, US
Gender
Male
Age Range
45-54
Would you recommend?:Yes
Purchased on Apr 20, 2021
Jul 13, 2026
Rated 2 out of 5
Merchandised delivered
2nd time I got this delivered theres Mass powder all over inside the box. We don't open right away but I could get Ants in my house. I'm not happy about this and for what you charge it should be sealed better.
Location
Mokena, IL, US
Gender
Female
Age Range
55-64
Would you recommend?:No
Purchased on May 6, 2021
Mar 21, 2026
Rated 4 out of 5
Vitamin shoppe
Great tasting
Location
Appomattox, Virginia
Gender
Male
Age Range
45-54
Purchased on Mar 6, 2026
Aug 16, 2025
Rated 5 out of 5
Best protein
Best protein
Location
US
Purchased on Jul 25, 2025
Aug 10, 2025
Rated 3 out of 5
Eh
Not bad the flavor is ok but I feel like it's hard to digest. Good for a dirty bulk
Location
Pensacola, Florida, UM
Gender
Male
Age Range
35-44
Would you recommend?:No
Purchased on Jul 18, 2025
Aug 2, 2025
Rated 1 out of 5
Gagged a bit while trying to drink this stuff .
This stuff taste awful . I wanted to try something new so I went from good ol faithful body tech prime mass vanilla flavor to this . Big mistake . I'm going to return the day after I received it in the mail . That's how bad this stuff taste
Would you recommend?:No
Dec 2, 2024
Rated 1 out of 5
A Lot of Sugar
Worst Protein I've ever had in my 8 years. Protein has A Lot of sugars!! Even when mixed with water. Teeth started hurting after 3 days of consumption because of all the sugars. Definitely stay away from this Protein
Location
San antonio, US
Gender
Male
Age Range
25-34
Would you recommend?:No
Sep 10, 2024
Rated 5 out of 5
....
.....
Location
Las Vegas, NV, US
Gender
Male
Age Range
35-44
Would you recommend?:Yes
Purchased on Aug 10, 2024
Aug 4, 2024
Rated 5 out of 5
Serious Mass
If you wanna build mass get this!
Location
Port Chester, NY, US
Gender
Male
Age Range
25-34
Would you recommend?:Yes
Jul 18, 2024
Rated 5 out of 5
High Price For High Quality
Started my weight gain journey at around 125 pounds with this product in the chocolate flavor. I managed to gain 35 pounds in around a month, grant it I was taking 3 servings a day and eating other food on top of that, but this stuff really helps fill in the calorie gaps if you're trying to gain weight. Also, be warned of the bloating if you're taking more than one serving a day due to the creatine included in the powder. I had stretch marks on my stomach at the end of the journey as a male.
Location
Vero Beach, FL, US
Gender
Male
Age Range
25-34
Would you recommend?:Yes
Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews.Please read the full product reviews disclaimer.

Q&A

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17 Questions
Why did you choose this?

Great Product ! Helps me put on or maintain weight ! Because of the Calories . Also has all the other protein vitamins and nutrients you need !

Cause that's what I wanted

I’m skinny

Need to gain weight.

I am a female. My weight is 80 pounds. I am looking to gain some weight and was wondering if this product would be right for me. I'm not going to working out much. People told me to eat meat and other things, but I am a vegetarian. Should I buy this product?

  If you're not going to be working out, you will only gain fat. Maltodextrin (the main ingredient) will spike your blood sugar considerably, and if the cells in your body aren't using it (because you're not working out), it will get stored as fat. Now I don't know what you look like. If you're skin an bones, then sure this might help (at the expense of your pancreas cranking out insulin). A healthier option if you're not working out would be Garden of Life Raw Meal.FYI, when most people tell you to gain weight, they mean muscle, not fat. Strength training 3 days a week will get you where you need to be. And don't worry about bulking up. As a female you lack the testosterone necessary to make that happen. Hope this helps,Skye

  Good Morning, I used this product numerous times and I love it. It is very good tasting, it blends well with no clumping. ON is by far the best product on the market. The ingredients I a sure are the best. I hope this help. I would buy this again and again. Dave.

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is it eeffective if you do not take it often?

  I don't know. I take it often. However, in much reduced quantities. All I'm looking for is an extra 500 calories a day to boost my total to 3500 which is too much for me to eat with quality food. This gives me that 500 extra calories. So in that context, it's working for me.

  oh okay thanks yeah I was a little skeptical when my milk is turning red lol but now it makes sense.

  No it is not. Need to take it everyday

Vote for the best answer above!

Hi..I am 117lbs weight and 173cm height. i look very slim and good shapes even as 6 pack. and i use to go gym. i just wanna put on some weight and muscle. will this product help? or which will i choose? plz help?

  I took this product twice a day and ate all the right things to help gain weight. In a one month period I gained 18 pounds without working out. Only downfall is you have to mix it very well(blender). I would recommend this product if you take it like your supposed to. Very satisfied with results

you gained weight but did you become huge in muscle? did your muscle grown bigger after using this product?

  Hi I had mass maybe 5 mouths ago but it didn't work on me with all protein ..!! It has a buggiest scoop in my whole life I saw ..!! Go just get cretin and masule teacht .. I'm not sure about spelling but its a the best protein shake 1100 cal and 40 G protein ... I got 20 pound gain in first mounth

  This product will help ONLY if combined with a proper diet and training plan for muscle growth, like any protein supplement. It's rich in carbs and to take it in the morning or post-workout are good options.

  Yes this product would help and also eat a lot of food, but good food. You have to train hard and lift heavy. You should take some creatine,fish oil omega 3-6-9,and plenty of rest.

  This product can definitely help you put on weight. I gained 10 pounds in 1 month. Of course, you also have to lift heavy weights and get a lot of calories from food.

Vote for the best answer above!

does anybody know if this product may cause acne?

  Not from my experience. Its just a concentration of calories mostly carbs low in fat, doubt any problems like that can be attributed to it.

  I went through two tubs and I didn't have a problem with any breakouts. It will cause you to gain a little more fat though.

Vote for the best answer above!

I'm wondering if women can take this product? I am a skinny girl naturally, so I am looking for something that will help me gain some healthy weight. I have a fast metabolism and I was just wondering if this product is something that would help or this is more for more serious weight gain? Thank you.

Best Answer:  Yes, this will help you gain the weight you want and, you can control your weight gains by taking it with water, whole, skim or 2% milk depending on your goals. An additional benefit is the taste is great and, don't worry you won't end up looking like a dude. I hope this helps.

Yea I don't quite understand the nutritional facts, does that apply if you take the 2 scoops or if it's 8? some confusion here

Best Answer:  The information on the ingredient lable is based on the serving size (2 scoops). There are 8 - 2 scoop servings in the entire container.

Product weighs 6 pounds but only yields 8 servings? If you take daily (just once) you would need to order more than 3 containers to get you through the month. Maybe a good product but the price per serving seems a little high.
Would i take this before or after i lift?

  Hey Zach! You'll use your weight gainers whenever you feel you are short on your calorie intake in order to remain anabolic throughout your day. You could take Serious Mass about an hour before your workout to accomplish this, or you could take it an hour-or-so after your workout to accomplish the same purpose. I have taken Serious Mass before, after, and a lot of the time (during my morning workouts) in the midst of the workout, along with some other whole food as well. You'll find though that you should try to minimize your intake of the weight gainers, however, because, while you will be able to satisfy your caloric requirement during the day, you'll start to look like shit. Weight gainers don't exactly make your skin look very nice, which is why most people use them only when necessary -- a lot of the time you'll be needing to eat 7-8000 calories a day, which is .... difficult to do day after day. Regardless, I hope it works out for you. Have fun lifting! ^_^

  I would not take it before you lift, or at least not right before. It works great as a recovery drink after a lift because of all the carbs and protein it has. But because of the high carb content, I wouldn't take it too late in the day. Better in the morning or afternoon so your body can process it all and not store fat. Hope that helps!

  If you are skinny looking for bulk, you take 30% of your drink with a protein bar before you workout. After workout, you drink the remaining 70% with or without a bar... If you are looking to gain muscles without too much bulk or fat, drink all before workout and just eat high protein meal after workout. (FISH, EGGS.. e.t.c)

  The most important time to take it is after you lift. But if you'll see more results if you take it an hour before and within a half hour after you lift.

  I take it after a work out . Due to the grams of protein in the powder

  after you lift, for best results read the direction in the back side.

  I liked taking it right after my work outs.

Vote for the best answer above!

In How many days a 6lbs serious mass can be use? by looking at the scoop, i think it will not sufficient even for 1 and half month ?

  According to the label there are only 8 servings. So it can be emptied within in 8 days if you drink one per day. Personally I only used about 1/4 to 1/3 of a serving at a time since my goal was to just use pre or post workout to replenish approx 60g of carbs. As well as just boosting my calories by a small amount to reach my goals for "Myfitnesspal." (app)

  depends how much you take every day. You don't need to take exactly the full scoop that it brings (that is more than 1 thousand calories!). You can use a smaller amount and still get good results, depends on your body weight, age, exercise regimen, etc.

  A very small amount of time. You gotta go for the 10lb bag otherwise it's a waste of money.

Vote for the best answer above!

I bought Serious Mass in january and I have been mixing it with milk. After mixing it tastes fine, but there is red at the bottom of my container, i was just wondering if anyone else has had this happen and if it is normal? It still tastes fine and seems to be working out great.

  One of the ingredients is Red #40 food coloring, have no idea why, that's probably what it is. Bummer because I thought it might have been vitamin A or something good for me.

  I have never seen such issue. I would contact O.N.

Vote for the best answer above!

Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews.Please read the full product reviews disclaimer.

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About Optimum Nutrition

Optimum NUTRITION has been trusted to provide the highest quality in post-workout recovery, pre-workout energy, and on-the-go sports nutrition products for over 35 years and in more than 100 countries. We are obsessed with quality. We sweat the details, scrutinizing every ingredient in every product that we make. We hold ourselves to the highest production standard, all so you can unlock your body’s full potential.

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