Sponsored
Optimum Nutrition Serious Mass 100% Whey Protein Powder - Chocolate - 2.96lbs - 4 Servings
$26.99
In Stock
Eligible for registries and wish lists
Sponsored
About this item
Highlights
- HIGH CALORIE WEIGHT GAINER: More than 1,200 calories per 2-scoop serving
- HIGH PROTEIN BLEND: 50 grams of blended protein per 2-scoop serving
- CARB LOADED: Over 250 grams of carbohydrates per 2-scoop serving
- IMMUNE SUPPORT FORMULA: With over 20 vitamins and minerals including Vitamin C and Zinc to provide immune support
- MORE VERSATILITY: Using an electric blender, add fresh or frozen fruits, peanut butter, nuts, and other calorie dense foods to boost your weight gain potential
Description
Optimum Nutrition Serious Mass Weight Gainer Protein Powder is the ultimate muscle building and weight gain formula. This chocolate-flavored protein powder delivers 1,260 calories per 2-scoop serving along with 50 grams of protein to support muscle recovery and 252 grams of carbohydrates to help fuel workouts. With 22 vitamins and essential minerals, including Vitamin C and Vitamin D, Optimum Nutrition Serious Mass Protein Powder makes the ideal post-workout and between meal shake for sizing up your weight gain goals. Optimum Nutrition powder mixes easily using a shaker cup or blended in a smoothie. There are 16 servings in this 12 pound container. There’s more of you in you. Optimum Nutrition has been trusted to provide high quality in post-workout recovery, pre-workout energy, and on-the-go sports nutrition for over 35 years and in 90+ countries.
Protein Grams per Serving: 50 Grams
Product Warning: Keep out of reach of children
Product Form: Powder
Package Quantity: 1
Protein type: Whey Protein
TCIN: 91220962
UPC: 748927063769
Item Number (DPCI): 094-08-0762
Origin: Made in the USA or Imported
Healthcare Disclaimer:
Content on this site is for reference purposes only. Target does not represent or warrant that the nutrition, ingredient, allergen and other product information on our Web or Mobile sites are accurate or complete, since this information comes from the product manufacturers. On occasion, manufacturers may improve or change their product formulas and update their labels. We recommend that you do not rely solely on the information presented on our Web or Mobile sites and that you review the product's label or contact the manufacturer directly if you have specific product concerns or questions. If you have specific healthcare concerns or questions about the products displayed, please contact your licensed healthcare professional for advice or answers.
If the item details aren’t accurate or complete, we want to know about it.
Serving Size: 340
Serving Per Container: 4
Amount Amount Per Serving:
Calories: 1260
% Daily Value*
Total Fat 6g8%
Saturated Fat 3.5g18%
Cholesterol 200mg67%
Total Carbohydrate 251g91%
Dietary Fiber 4g14%
Sugars 29g
Added Sugars 8g16%
Protein 50g100%
Vitamin A 340mcg38%
Vitamin C 30mg33%
Vitamin E 4mg27%
Thiamin 0.4mg33%
Riboflavin 0.9mg69%
Niacin 4mg25%
Vitamin B6 0.4mg24%
Folic Acid 170mcg DFE43%
Folic Acid 100mcg
Vitamin B12 1.55mcg65%
Biotin 60mcg200%
Pantothenic Acid 3mg60%
Calcium 700mg54%
Iron 9mg50%
Iodine 23mcg15%
Magnesium 200mg48%
Zinc 3.7mg34%
Copper 0.6mg67%
Manganese 0.6mg26%
Sodium 650mg28%
Potassium 1370mg29%
Creatine Monohydrate 5g
* Percentage of Daily Values are based on a 2,000 calorie diet.
Ingredients:
maltodextrin, whey protein concentrate, cocoa (processed with alkali), natural and artificial flavor, sunflower and/or soy lecithin, acesulfame potassium, sucralose.
Allergens & Warnings:
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., CONTAINS: MILK AND SOY.Shipping details
Estimated ship dimensions: 10.1 inches length x 6 inches width x 5.9 inches height
Estimated ship weight: 3.35 pounds
Return details
This item can be returned to any Target store or Target.com.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.
Q: How big is the container
submitted by Luke - 11 months ago
A: The dimensions of the container are L 5.990" W 5.990" H 9.935".
submitted byOptimum Nutrition - 8 months agoBrand expert
New & Trending
$29.99($1.77/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
3.5 out of 5 stars with 8 ratings
$29.99($1.85/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
4.1 out of 5 stars with 9 ratings
$14.99($8.82/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
Ultima Replenisher Daily Hydration Electrolyte Stick Packs - Summer Splash Variety Pack - 1.7oz/14ct
3.8 out of 5 stars with 5 ratings
$9.99($0.21/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
5 out of 5 stars with 3 ratings
Guests also viewed
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
4.8 out of 5 stars with 1018 ratings
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
4.7 out of 5 stars with 1228 ratings
Highly rated
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
Optimum Nutrition Gold Standard 100% Whey Protein Powder - Strawberries & Cream - 22 Servings - 24oz
4.8 out of 5 stars with 920 ratings
$15.99($1.23/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
4.6 out of 5 stars with 41 ratings
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
4.8 out of 5 stars with 867 ratings
Discover more options
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
4.7 out of 5 stars with 1228 ratings
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
4.8 out of 5 stars with 867 ratings
$15.99($1.25/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
4.6 out of 5 stars with 724 ratings
$64.99($1.04/ounce)
Get a coupon, $10 off a $20 purchase with a flu shot
4.6 out of 5 stars with 282 ratings
Highly rated
$29.99
Get a coupon, $10 off a $20 purchase with a flu shot
Optimum Nutrition Gold Standard 100% Whey Protein Powder - Strawberries & Cream - 22 Servings - 24oz
4.8 out of 5 stars with 920 ratings
Related Categories
Guests are saying
Optimum Nutrition Serious Mass in chocolate flavor is a highly praised mass gainer that combines great taste with effective results. Guests appreciate its smooth texture and easy mixability, making it a convenient option for those looking to increase calorie intake and support muscle growth. With a rich chocolate flavor and a solid nutritional profile, it serves as an excellent meal replacement or post-workout shake. Many guests have reported noticeable weight gain and muscle development after consistent use.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.6 out of 5 stars with 154 reviews
0% would recommend
1 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
15 October, 2025Verified purchase
Not sure if it's authentic
I'm a little concerned about the authenticity of this product. Their official website suggests that there should be a golden neck band the lid and a sticker on the bottle that shows 6 degits of unique product number. I don't see them on the product I purchased.
1 reply from Optimum Nutrition team - 6 days ago
For assistance with authentication, please send an email to "oncustsuppus@optimumnutrition.com" and we are happy to verify!
5 out of 5 stars
4 August, 2025
originally posted on optimumnutrition.com
Good Chocolate Taste
taste very good, great for wanting to gain weight.
1 reply from Optimum Nutrition team - 3 months ago
When we say Serious Mass, we mean it! 👍
5 out of 5 stars
27 July, 2025
originally posted on optimumnutrition.com
Wooo!
Great for mass!! This is what you need if you want to get the real gains
5 out of 5 stars
25 June, 2025
originally posted on optimumnutrition.com
Double Chocolate
Tastes amazing and mixes very well in shaker bottle
5 out of 5 stars
2 June, 2025
originally posted on optimumnutrition.com
Serious muscle growth
I've packed on 35lbs of muscle using this product along with weight training. I highly recommend it for a boost in muscle growth.
5 out of 5 stars
19 February, 2025
originally posted on influenster.com
The best during my gym journey
[This review was collected as part of a promotion.] Optimum Nutrition Mass Gainer in Chocolate is a delicious and effective way to boost your calorie intake. It has a rich, smooth chocolate flavor that makes it enjoyable to drink, and it blends easily without clumps. Packed with a good balance of protein, carbs, and essential nutrients, it helps support muscle growth and recovery. Overall, it’s a great choice for those looking to gain weight or build muscle.
1 reply from Optimum Nutrition team - 8 months ago
We settle for nothing less than the best and we're happy to hear Serious Mass is a great addition to your routine! 🙌🙌
5 out of 5 stars
7 January, 2025
originally posted on optimumnutrition.com
Great Taste & Texture. Effective.
Long-time Serious Mass user. I use it as a meal replacement for days when my schedule is jam packed and getting lunch is not an option. Tastes great. Quells my hunger and keeps my muscles fed.
1 reply from Optimum Nutrition team - 9 months ago
We're glad to hear your review as an experienced user of Serious Mass! We're delighted to hear Serious Mass has come in handy during your busy schedule!
5 out of 5 stars
30 December, 2024
originally posted on influenster.com
VERY YUMMY RECCOMEND
[This review was collected as part of a promotion.] Taste really good and it’s very easy to mix and it’s defiantly working the texture is also good and very nice and smooth once mixed and it’s definitely worth its value
5 out of 5 stars
23 December, 2024
originally posted on influenster.com
i need more
[This review was collected as part of a promotion.] super amazing omg i need another one rn i just finished mine!!! it helped me create muscle mass very healthily since i don’t gain weight easy. its great and it lasted so long. tastes yummy like cake!!
1 reply from Optimum Nutrition team - 10 months ago
We're glad to hear that Serious Mass has been helpful in reaching your fitness goals! Congratulations and thanks for the wonderful review!
4 out of 5 stars
8 December, 2024
originally posted on influenster.com
Good taste
[This review was collected as part of a promotion.] The taste was better than I was expecting! I made a strawberry banana chocolate smoothie and it was good! Lots of protein for not too many calories and didn’t leave the smoothie too chunky.
1 reply from Optimum Nutrition team - 11 months ago
Great photo! We're excited to see that Serious Mass has met your expectations and we appreciate the review!
5 out of 5 stars
28 November, 2024
originally posted on optimumnutrition.com
Great all around
I started taking this to help me gain weight and help me eat more and within a week i already started gaining weight. and after a month it’s helped me gain 10 pounds, and I can eat more. The taste is great, it’s like a chocolate shake, I love it!
5 out of 5 stars
26 November, 2024
originally posted on influenster.com
So good
[This review was collected as part of a promotion.] This value pack is amazing. It tastes like chocolate milk and doesn’t have the artificial flavors like other powder. I really like the texture and the effectiveness
5 out of 5 stars
25 November, 2024
originally posted on influenster.com
Great Powder protein
[This review was collected as part of a promotion.] Hi, Me and my boyfriend really love the ON SERIOUS MASS CHOCOLATE 3Lb from Optimum Nutrition. It is so delicious and healthy. We been working out a lot and this protein helps us gain that extra muscles.
1 reply from Optimum Nutrition team - 11 months ago
Excited to see Serious Mass has been helpful in gaining additional muscle! Great progress!
4 out of 5 stars
19 November, 2024
originally posted on influenster.com
Great taste!!
[This review was collected as part of a promotion.] I was super excited to try this Optimum Nutrition protein powder! I had never tried this brand before. I was impressed with the overall taste of this protein powder! It was not chalky like some other brands I had tried. I am excited to see the results with consistent use of this product!!
5 out of 5 stars
13 November, 2024
originally posted on influenster.com
Taste good
[This review was collected as part of a promotion.] Works really good and also taste really good too I have tried other brands and this by far showed the best results faster I highly recommend this stuff
5 out of 5 stars
13 November, 2024
originally posted on influenster.com
BEST PROTEIN!!!
[This review was collected as part of a promotion.] The taste of this is amazing! Very much chocolate and a good texture. It blended nicely in my shaker bottle and I looked forward to making and drinking a shake. It is high calorie and full of protein and helped me achieve my goals for in and out of the gym!
3 out of 5 stars
12 November, 2024
originally posted on optimumnutrition.com
Good but flavour isn't the same
Two scoops can definetly be alot. The flavour is also thicker in a more negative way compared to the regular chocokate protein powder. It's still good, it's just not the phenomonal chocolate flavour that I've always enjoyed from them.
1 reply from Optimum Nutrition team - 11 months ago
Thanks for the review! Some users of Serious Mass opt to split the 2 scoops over the course of a day so that the entire serving does not have to be consumed in a single sitting.
4 out of 5 stars
11 November, 2024
originally posted on influenster.com
Best for Bulks
[This review was collected as part of a promotion.] This protein power is delicious! It is such a good way to help get in more calories for trying to bulk. The taste is also delicious on its own or even good with other fruits mixed in with it!
4 out of 5 stars
11 November, 2024
originally posted on influenster.com
Good
[This review was collected as part of a promotion.] I have already been using this brand and flavor hence why I already have one in the picture. I don’t feel bloated after taking these and it taste good if your a fan of chocolate. I would also use it and make over night oats/yogurt.
5 out of 5 stars
7 November, 2024
originally posted on influenster.com
New favorite!
[This review was collected as part of a promotion.] ON Serious Mass Chocolate is a great choice if you’re looking to add calories and bulk up. The shake mixes well, although it’s a bit thick, so using a blender helps. The chocolate flavor is decent—not overly sweet but satisfying. It’s packed with calories, protein, and vitamins, making it convenient for hard gainers. Just be prepared for a larger portion size!