SERIOUS MASS – High-Protein Weight Gain Powder – Vanilla – 12 lbs./16 Servings

SERIOUS MASS – High-Protein Weight Gain Powder – Vanilla – 12 lbs./16 Servings

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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.

Serving Size: About 2 Heaping Scoops
Number of Servings: 16 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.

Brand:
Optimum Nutrition
Form:
Powder
Flavor:
Vanilla
Serving Size:
About 2 Heaping Scoops
Number of Servings:
16 Servings
Price per Serving:
($7.50 / serving)
Product Weight:
197  OZ
Item # :
OP-7144 / 1483633
331 Ratings
4.5out of 5 stars
331 Ratings

Rated 5 stars by 69% of reviewers

Rated 4 stars by 19% of reviewers

Rated 3 stars by 6% of reviewers

Rated 2 stars by 2% of reviewers

Rated 1 star by 4% of reviewers

Would you recommend?
1-10 of 331 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
Oct 16, 2025
Rated 5 out of 5
Serious mass protein power
I love this stuff! It taste so good and it helps me achieve my goals.
Location
Hemet california
Would you recommend?Yes
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 4, 2025
Rated 5 out of 5
Good Chocolate Taste
taste very good, great for wanting to gain weight.
Location
Richmond, VA
Would you recommend?Yes
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
Jul 27, 2025
Rated 5 out of 5
Wooo!
Great for mass!! This is what you need if you want to get the real gains
Would you recommend?Yes
Jun 25, 2025
Rated 5 out of 5
Double Chocolate
Tastes amazing and mixes very well in shaker bottle
Location
Midwest
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.

We'll email them your question, then email you their replies.

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Start typing and see existing answers.
10 Questions
Why did you choose this?

Good

Wanna gain

Like flavor

Tried out with the 6lb tub and saw the increase on the scale. Looking for mass and this is easy to put down.

Can women take this product?
Also in correlation with my last question, I want to get serious about weightlifting and get bigger in muscle, is this the right product to get?

  This product acts as a meal replacer. If your trying to gain and maintain weight, this is a good product to use. I regularly still eat my breakfast and dinner, and use this as a bedtime snack just because you gain more if eating before bed. It taste the best with milk, but I warn you to ease into it, because it is so thick, you may wanna only start using one scoop the first few days. I also use more milk than recommended on the package just to thin out the mixture. To forewarn you with this item, it is very sticky and does not mix well by hand so be sure to clean your blender thoroughly, especially around the blades. As far as supplements after lifting, I would recommend using WHEY Protein powder and drink a serving of it after lifting. The best thing to do is eat/mix it with peanut butter and ice cream. Look at the nutrition facts on a jar of peanut butter and you'll be surprised how much protein is in a single serving. Just load on proteins to build muscle; eggs, baked chicken, etc. I hope this helps.

  If you're already getting enough calories in your diet then you do not need this. But if you're a smaller guy like myself who doesn't have a huge appetite and has a hard time fitting in extra calories then this is perfect for you.

  This is the right product young fellow. It has all the "L"s in it you need. Now get yourself a good Pre-Workout drink to take and you'll be off to a good start.

  Its a very good meal replacement when you are trying to get calories in.

Vote for the best answer above!

I'm just wondering if I can use this to get muscle mass faster. I'm a 16 year old guy, 5'10" and 188 pounds right now. I'm in good shape, my arms are bigger than most kids my age, but I'm wondering if when you use this, because you intake so many calories, do you eat anything else throughout the day? And also when should you take it? throughout the day? Right before or after or during your workout? Someone please help! Thanks!

  Serious Mass is a great supplement for people looking to put on weight. More specifically, it's meant for people who have trouble putting on weight (hard-gainers), you know those skinny guys, like myself, who eat and eat, and eat just as much ,or more, than every other normal person, but it still doesn't show when they step on the scale.

Serious Mass is a supplement, not a replacement, for meals. Which means, it's meant to be taken in between your normal breakfast, lunch, and dinner meals. The idea is, you are basically doubling the amount of calories you would normally take in one day.

At 5'10" and 188 pounds, it sounds like your body already has good mass. And, at 16 years of age, your body is still growing and gaining on it's own just fine without the need of a supplement like Serious Mass. Trust me, you are lucky to have a good foundation to start from.

If I were you, I would just maintain whatever food intake you are already consuming and add something like a whey protein shake directly after your workouts. Protein is absolutely the most important nutrient for muscle growth.

Supplements can be a big help, but more importantly, your muscle mass will mostly depend on how much and how often you lift weights. But, again, at 16, there's no rush, let nature take its course, your potential will only get higher.

  Greetings, my 17 year old son was using this to gain weight. He was around 150 lbs., 5'10", and works out with weights. Over the course of about 2 months he gained around 12 lbs, and drank the shake either before or after working out. I believe if you can drink it before and after working out, and if you can afford it, you will arrive the best results. The shake is very filling, and my son only used 1 scoop per serving, the scoops are huge. my son can eat quite a lot, and tried to eat along with the shake, but it's filling. The vanilla tastes good, he started off with buying the jug, but that went quick and he bought the bag. He's getting a little tired of it right now, so he's taking a break, and will probably use it again if his weight starts to drop. I hope this helps!

  Your intake of food throughout the day should increase. Try to remember you should be eating anywhere from 5 to 8 small meals a day and be drinking plenty of water on top of your food intake. Follow the instructions on the package and yes do use the full amount of scoops suggested for usage. I am 60 years old and have been taking this for almost 2 years and truly believe this is one of the best on the market. Hope this helps...

  I take it in split servings, once after a workout, and before I go to sleep. I use this product along with eating small meals throughout the day.

Vote for the best answer above!

Are there any side effects of it?

  Both my teenage sons weight lift and have been using Serious Mass for the last year. They seem to really like it and have never mentioned anything negative. However, I can not answer if it works as suggested because the recommended serving would never fit in the blender (the scoop it twice the size of a normal one) and you're suppose to use 2 scoops. They use 1/2 at best as a post workout drink.
I like it because all my boys are active and it makes a perfect supplement to their diet and you can't beat the price!

  There are no side effects to this product at all. This product is a great value for what you get in the package. You get the casein protein which is exceptionally slow to digest and absorb, you get egg protein which is absorbed at a high rate to give your body a critical boost to your hormone-producing pathways and finally you get whey protein which is a good sustainer when you're at your peak in the workout. These 3 items combined are what serious trainers or weight gainers are looking for. Hope this helps.

  No negative side effects besides being uncomfortably full, especially if you eat food with the gainer. Definitely split up into two 1/2 servings.

  Do not buy this product ,, gives you a gut , did not see much results ,

Vote for the best answer above!

Is the calorie listed per serving using milk or water?

  Hi Timothy, the 1,250 calories per serving listed on the label is if mixed in water; 1,640 calories when made with low fat milk.

  Yes. 1250 calories/serving with water, 1630 calories with low fat milk.

  water

Vote for the best answer above!

Does the vanilla taste good?

  I think it's better than the chocolate since I find it easier on my taste to add some fruit to vanilla than it is to chocolate.

  Tastes better than the chocolate

  it really does!

Vote for the best answer above!

Are there any side effects?

  No side effects for me, although I have heard some people say that a full serving upsets their stomach- so they take half serving instead. Hope that helps

  No side effects. Unless you are lactose intolerant drink with water.

Vote for the best answer above!

i am so thin.i eat to much food bt its not work.so if i get this medicine it wiil work????

  This is not medicine, but a food supplement. Use this in combination with a healthy diet and careful weight training and you will gain lean healthy weight. Of course, before you do anything you should get checked out by a doctor to see if a medical problem is the reason for your inability to gain weight and/or you are healthy enough for exercise.

  Great Product for bulking. Drink with milk 2% but shake it up good.

Vote for the best answer above!

for weight gain optimum how palatable is it. I prefer one with high fructose?
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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