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

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

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Product Info

About This Product

  • Supports muscle building and weight gain goals
  • 1,250 calories, 50g of protein, and 252g of carbs per serving
  • Delivers 25 vitamins & minerals, creatine, and glutamine
  • Chocolate 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 Chocolate weight gain powder packs 1,250 calories, 50g of protein, and 252g 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: 16 Servings
Amount Per Serving
% Daily Value
CALORIES   
**%
TOTAL FAT   
8%
SATURATED FAT   
18%
CHOLESTEROL   
67%
TOTAL CARBOHYDRATE   
91%
DIETARY FIBER   
14%
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
65%
BIOTIN  - AS D-BIOTIN
200%
PANTOTHENIC ACID  - AS D-CALCIUM PANTOTHENATE
60%
CALCIUM  - AS CALCIUM CARBONATE, CALCIUM PHOSPHATE
54%
IRON  - AS FERROUS FUMARATE
50%
IODINE  - AS POTASSIUM IODIDE
15%
MAGNESIUM  - AS MAGNESIUM PHOSPHATE
48%
ZINC  - AS ZINC OXIDE
34%
COPPER  - AS COPPER GLUCONATE
67%
MANGANESE  - AS MANGANESE SULFATE
26%
SODIUM   
28%
POTASSIUM   
29%
CREATINE MONOHYDRATE   
**%

Other Ingredients:

Maltodextrin, Whey Protein Concentrate, Cocoa (Processed with Alkali), Natural and Artificial Flavor, Sunflower and/or Soy Lecithin, Acesulfame Potassium, Sucralose. Contains: Milk, Soy.

Specifications

Brand:
Optimum Nutrition
Form:
Powder
Flavor:
Chocolate
Serving Size:
About 2 Heaping Scoops
Number of Servings:
16 Servings
Price per Serving:
($7.50 / serving)
Product Weight:
196  OZ
Item # :
OP-7142 / 1483608

Who Might Benefit From This Product

  • Active Individuals: Perfect for those engaged in physical activities who wish to support muscle building and enhance workout recovery. This product offers a substantial caloric intake that may aid in fueling intense exercises and promoting muscle growth.
  • Busy Individuals: Ideal for those with full-day routines needing a convenient source of nutrients and calories. With its quick preparation, it provides an easy way to support daily nutritional goals, even on-the-go.
  • High-Metabolism Individuals: Suitable for people with a very active metabolism who find maintaining or increasing body weight challenging. The high-calorie content may assist in meeting daily caloric needs effectively.
  • Avid Nutrients Seekers: Great for those looking to enrich their diet with a comprehensive nutrient profile. This product contains a blend of vitamins, minerals, creatine, and glutamine to support overall wellness and muscle function.
  • On-the-Run Professionals: Designed for professionals who find it difficult to balance work and nutrition. This convenient supplement offers a robust amount of protein and carbs, helping to fuel their demanding lifestyles.

Product Reviews

84 Ratings
4.4out of 5 stars
84 Ratings

Rated 5 stars by 71% of reviewers

Rated 4 stars by 14% of reviewers

Rated 3 stars by 2% of reviewers

Rated 2 stars by 4% of reviewers

Rated 1 star by 8% of reviewers

Would you recommend?
1-10 of 84 Reviews
Customers talk about
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
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
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
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
Jan 2, 2024
Rated 1 out of 5
Don't buy this item in Philly
This is already the 14th pack I've bought here. Before, I used to purchase them in Deptford , but the last one I bought in Philadelphia and it's fake, smell like sh* and it foams a lot. This bad review for VS not for that item.
Location
Swedesboro, Nj
Gender
Male
Age Range
25-34
Would you recommend?:No
Purchased on Jun 29, 2023
Mar 28, 2023
Rated 5 out of 5
WOW!!!
Fast, no shipment fee, I LOVE IT!!!
Location
Tamuning, US
Gender
Male
Age Range
45-54
Would you recommend?:Yes
Purchased on Feb 25, 2023
May 24, 2022
Rated 5 out of 5
Helpful when used properly
Pros: ?helped my underweight family member gain weight?tastes better than other brands, according to my family memberCons: ?difficult to consume an entire serving due to the filling nature of the product
Location
Fort Wayne, IN, US
Gender
Male
Age Range
25-34
Would you recommend?:Yes
Purchased on Mar 24, 2022
Apr 15, 2022
Rated 4 out of 5
Great product, great Taste
Great product, great Taste
Location
Albany, NY, US
Gender
Female
Age Range
35-44
Would you recommend?:Yes
Aug 7, 2021
Rated 5 out of 5
Great
Perfect
Purchased on Jul 7, 2021
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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27 Questions
Why did you choose this?

I’ve been using this for years and works for me.

Trying to gain weight

I like this product

I’ve been using this for years and it works really well for me. I might change soon though, 100+ dollars for something I paid about 50 5 years ago. Is crazy inflation.

Hi, I'm a 20 y.o female who weighs about 108 lbs and I'm 5'7.. yea, not a pretty sight. I want to gain weight desperately but it's so hard because lately I have no appetite and my metabolism is crazy fast. I don't go to the gym because I'm scared of loosing weight. Is this powder for me?

Best Answer:  Jess if you want to increase your weight there is a few steps that you need to follow, 1 you need eat every 3 hours breakfast lunch and dinner and between those foods one snack, 2 the quality increase the protein and carbohydrates also vegetables and fruits , if you do exercise don't burn a lot quantity of calories, example if you run don't run for more than 15 min because if you run for 20 min or more you are burning calories you need but less calories than the quantity that you eat the whey protein help whits this recommendation I hope it helps this explanation English is not my first language thanks

How long does the bag last for if you are using 2 scoops per day like recommended?

Best Answer:  how is this product ?

Can i take this supplement as a breakfast meal instead since i have hard time to get to my breakfast....please help?
when to use this product I mean when to drink before workout or after workout?

Best Answer:  All four of my boys use or have used Serious Mass. It is filling, so after workout makes the most sense. Also before bedtime. Be careful not to let it replace regular meals. Add it to the normal amount of food you eat and you will see good results.

Hi I am a skinny guy of 125 pounds of 24yrs.But look like a 18yrs guys which I hate it. I am trying hard to gain weight, but not able to gain weight. I am trying to figure the best weight gainer, I have dilema whether Serious Mass Chocolate would help me increasing my weight.Can any one help me in giving me the best advice?

Best Answer:  This product is for you. All four of my boys use or have used Serious Mass. If you are lifting, drink after and before bed. Do not let it replace regular meals. It is very filling. Also, while gaining for football, their regular plates had lean protein, baked steak fries tossed in grape seed oil and lots of pasta with olive oil. They washed that all down with Serious Mass and got extreme results. I hope this helpful.

I'm a female, how much will you recommend in me taking a day?

Best Answer:  It all depends on whether you want to gain weight (and how much) or are just taking this as a meal replacement. One scoop (1 cup) equals 600 calories. I, myself take one scoop with skim milk and other ingredients for breakfast that adds up to about 1000 calories.If you're bodybuilding or recovering from an illness and need to pack on pounds, I'd say take 2 scoops (one serving) which equals 1250 calories per day.

this protein can help you build muscle mass, but does get you fat also ?

Best Answer:  Yes and no. It works, you will gain mass everywhere, that includes your belly too. Remember this stuff is loaded with carbs, i would only recconmend this product if you already have a GREAT cardio routine. Otherwise find something with fewer carbs (20-40grams). Id reccomend eating more. Every two and a half hours. At least 5-6 meals. Youll gain porportional mass. Youll look better.

Would you refer this to women? I need to gain weight and I eat a lot, but my metabolism is very fast; will this work for me?

Best Answer:  If you were going to use this to gain weight, make sure you are exercising to gain muscle mass in combination. If you just take this alone you may gain unwanted fat in places where you do not want. Also I would only do about 1/2 a serving at a time or it also make you gain weight too fast. Assess the portions and up it to 3/4 or a full serving depending on your progress. Everybody is different but this is a good product.

average weight gain rate with this product?

Best Answer:  Hi, When my boys, 17 and 18 are working out and using this product, they will easily put on 10 to 12 lbs. in a month. It is necessary to add to your regular meal plan. Not to replace meals. My two older boys used Serious Mass when they were the same age and first getting into lifting. They had the same good result. I Hope this is helpful.

I am 16 and weight 160 pounds. I play football and run track. I'll start varsity for football at receiver and corner this coming season but ideally i want to weight about 180 pounds by football season putting on strength and speed. I work out 3 times a week at a facility. I take a teaspoon of creatine 3 times a week also. Would this be a good protein to use with this?

Best Answer:  This is one of the better weight gainers/proteins you can get. More for your money and great results. I basically swear by this stuff, cause I too am an athlete and need a good source of protein while trying to bulk up. I tend to only do one scoopafter workout and before bed. It says two scoops is servicing size but I find it to have mud like taste if you end up doing that...way to thick and isn't great. Why I stick to the one scoop. I tend to mix it with a banana or peanut butter as well for extra with whole milk as well. Good luck on next season. I would try to stay away from the 3 scoops of creatine a week which is not nearly as much as u truly need but maybe looking into something else like kre alk or concrete. Anyway, hope that was helpful.

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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