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Optimum Nutrition Serious Mass, Weight Gainer Protein Powder with Immune Support, Strawberry, 6 Pound (Packaging May Vary)

4.4 4.4 out of 5 stars 21,403 ratings

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Strawberry
6 Pound (Pack of 1)

Purchase options and add-ons

Brand Optimum Nutrition
Flavor Strawberry
Servings per Container 8
Item Weight 6 Pounds
Diet Type Gluten Free

About this item

  • High calorie weight gainer: 1,200+ calories per 2-scoop serving
  • 50 grams of blended protein per serving For Muscle Building & Weight Gain Goals
  • Over 250 of carbohydrates per serving to Help Boost Calorie Intake
  • 22 vitamins and minerals including Vitamin C, Vitamin D, and Zinc to provide immune support
  • 3 Grams of Creatine Monohydrate per Serving

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From the brand


From the manufacturer

High Protein and Weight Gainer Powder

Optimum Nutrition Serious Mass


The Gold Standard of Quality

  • Over 1,200 calories per serving
  • Over 250 grams of carbohydrates & 50 grams of protein per serving
  • 3 grams of Creatine Monohydrate per serving
  • Informed Choice & Banned Substance Tested

Stack your gains across Optimum Nutrition:

OPTIMUM NUTRITION SERIOUS MASS GAINER PROTEIN HIGH CALORIE

SERIOUS MASS PROTEIN

creatine powder for muscle gains, optimum nutrition, creatine

CREATINE MONOHYDRATE

optimum nutrition gold standard whey protein powder, on, gsw, cinnamon roll

100% WHEY PROTEIN POWDER

PREWORKOUT, PRE WORKOUT, OPTIMUM NUTRITION, ON, PWO, PRE, WORKOUT CAFFIENE

GOLD STANDARD PRE WORKOUT

MIXED BERRY AMINO ENERGY SPARKLING, ON, AES, ENERGY DRINK, BERRY BURST

ENERGY + HYDRATION DRINK

AMINO ENERGY POWDER, CITRUS SPRITZ, ON, OPTIMUM NUTRITION ENERGY POWDER, PREWORKOUT, AEP

AMINO ENERGY POWDER

Customer Reviews
4.5 out of 5 stars
25,290
4.6 out of 5 stars
67,534
4.7 out of 5 stars
203,923
4.4 out of 5 stars
43,364
4.3 out of 5 stars
47
4.5 out of 5 stars
16
OPTIMUM BENEFIT
Mass gainer protein powder Support muscle building Helps build & maintain muscle Pumps, energy & performance On-the-go energy drink Anytime energy - new flavor
PRIMARY SUPPLEMENT
High calorie & performance Micronized creatine powder 100% Whey protein powder Preworkout powder Caffeine with added hydration Energy powder with hydration
USAGE
Before or after your workout Supplement with your protein Before or after your workout 20 minutes before your workout Anytime energy Anytime energy
Gluten Free
Stackable with ON products?

Optimum Nutrition's Athlete Spotlight

optimum nutrition, on, gsw, creatine powder, creatine monohydrate, muscle growth supplement

Cameron Brink- Stanford Women's Basketball Player

Cameron Brink is a student-athlete at Stanford University, entering her senior year as the face of the Cardinal women’s basketball team.

Cameron's advice: "Remember to find something you love and have fun! It’s critical to then eat well – nutrition plays such a critical role in anything you do."

gold standard whey, optimum nutrition, on, gsw

Taylor Fritz - Tennis Player

How do ON’s products help Taylor dig deeper and reach his nutrition & performance goals?

Whether it’s after a gym session, while traveling or after a match, Taylor trusts Optimum Nutrition products to provide him with the high-quality protein he needs to support performance and recover at his best

Reach your protein potential with Optimum Nutrition's SERIOUS MASS Gainer

For Muscle Building & Weight Gain Goals

Serious Mass has the calories, carbohydrates and protein to respectively help boost caloric intake, fuel your workouts and help boost & maintain muscle in conjunction with a healthy, balanced diet and regular weight training.

Product Description

For Muscle Building & Weight Gain Goals SERIOUS MASS is the ultimate muscle building and weight gain formula. With 1,250 calories per 2-scoop serving and 50 grams of protein to support muscle recovery, this powder makes the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with the tools you need to support your weight gains goals

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8.06 x 8.06 x 10.39 inches; 6 Pounds
  • Item model number ‏ : ‎ 1031919
  • Department ‏ : ‎ unisex-adult
  • Date First Available ‏ : ‎ November 22, 2004
  • Manufacturer ‏ : ‎ Optimum Nutrition
  • ASIN ‏ : ‎ B0015R36XU
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.4 4.4 out of 5 stars 21,403 ratings

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Optimum Nutrition Serious Mass, Weight Gainer Protein Powder with Immune Support, Strawberry, 6 Pound (Packaging May Vary)
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Price-9% $49.03
List:$53.99
-6% $49.03
List:$51.99
-12% $47.68
List:$53.99
$82.99$79.44
Price Per Unit$0.51 / Ounce$0.51 / Ounce$0.50 / Ounce$0.43 / Ounce$0.41 / Ounce
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Ingredient quality
4.0
4.1
4.0
4.1
4.2
Value for money
3.9
4.0
3.9
4.0
4.1
Flavor
3.9
4.1
3.9
4.1
4.2
Portion size
3.7
3.3
3.7
3.3
4.5
Scent
4.3
4.2
4.3
4.2
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Phoenix Seller Store
flavor
Strawberry
Chocolate
Vanilla
Strawberry
Chocolate
protein source
whey
whey
whey
whey
whey
weight
6 pounds
6 pounds
6 pounds
12 pounds
12 pounds
target gender
unisex
unisex
unisex
unisex
unisex
carbohydrate info
252.0 grams, 254.0 grams
253 grams
252.0 grams, 252.0 grams
energy info
1.25 kilocalories, 1250.0 kilocalories
1250 kilocalories
1250 kilocalories
1.25 kilocalories, 1.25 kilocalories
1250 kilocalories

Important information

Safety Information

Not for use by those with pre-existing medical conditions or taking any medications, those under the age of 18 or women that are pregnant or nursing.This product is labelled to United States standards and may differ from similar products sold elsewhere in its ingredients, labeling and allergen warnings

Ingredients

Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Natural and Artificial Flavors, Vitamin and Mineral Blend (Dipotassium Phosphate, Magnesium Aspartate, Dicalcium Phosphate, Calcium Citrate, Ascorbic Acid, Niacinamide, Zinc Citrate, Beta Carotene, d-Calcium Pantothenate, d-alpha Tocopheryl Succinate, Selenomethionine, Copper Gluconate, Ferrous Fumarate, Manganese Amino Acid Chelate, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Medium Chain Triglycerides, Lecithin, FD&C Red #40, Acesulfame Potassium.

Directions

Mix 2 scoops of the powder into 24 fluid ounces of cold water or milk using an electric blender. Use as a post-workout recovery tool, as part of a complete meal, or in your daily snack routine to raise caloric intake. Want to add even more calories to your shake? Mix in fruits, berries, nuts, peanut butter, and other calorie-contributing foods before blending. TIP: New users should start with a 1-scoop half serving. Use post-workout and/or between meals to add calories, carbs, and protein to your healthy, balanced diet.

Legal Disclaimer

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. ** Always refer to the manufacturer's label on the product for description, recommended dose and precautions.

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

Looking for specific info?

Customer reviews

4.4 out of 5 stars
4.4 out of 5
21,403 global ratings

Customers say

Customers like the quality and effectiveness of the product. They say it's really good for you and definitely worth it. They appreciate weight gain. However, some customers find the portion sizes to be huge. Opinions are mixed on blending, calories, taste, value, and ingredients.

AI-generated from the text of customer reviews

554 customers mention386 positive168 negative

Customers are mixed about the taste of the health personal care product. Some mention that they like the flavor and it mixed well with juice or milk, while others say that it tastes a little strange, has an artificial flavor, and is disgustingly sweet.

"Very tasty when blended correctly...." Read more

"...taste of other Optimum Nutrition supplements don't worry, Serious Mass tastes awesome, mixes very well in a shaker bottle, and contains exactly what..." Read more

"...some weight and put on muscle it’s honestly amazing it just tastes a little weird" Read more

"...POSITIVE: the taste was pleasant and was not too sweet in terms of flavor." Read more

271 customers mention264 positive7 negative

Customers are satisfied with the quality of the product. They mention that it's a great product, amazing, and worth the price. Some say that it contains bleach, but it'll be a good buy for your money. Overall, customers are happy with their purchase and recommend it to others.

"...It's a perfect complement to Top Shelf King Maker, as it offers the essential fuel my body needs for muscle growth...." Read more

"...+ Very affordable..." Read more

"...So thanks again Optimum. Excellent product, way better then Ensure." Read more

"...It's fine. It's a lot like a thick chocolate shake, and extremely sweet. However, the sweetness resides in your mouth for hours after drinking it...." Read more

195 customers mention176 positive19 negative

Customers find the weight gain of the product to be fantastic for tackling their weight goals. They say it helps them put on weight and keep it on. They also mention that the ingredients are designed to promote lean muscle development. Customers also say that the product has helped them maintain weight and stay at a doctor-approved weight.

"...crafted blend of ingredients is specifically designed to promote lean muscle development, and I've experienced remarkable gains in a short period of..." Read more

"...been using this protein powder for about a year now and it’s helped me gain some weight and put on muscle it’s honestly amazing it just tastes a..." Read more

"...This shake is very filling...." Read more

"...But ENERGY AND HEALTH has drastically improved. She can walk in the store with the help of a cart...." Read more

142 customers mention46 positive96 negative

Customers are mixed about the value of the product. Some mention that it's a decent cost versus the store, and a good value for how much protein you get. However, others say that it is not worth it, and that they are consuming a subpar, cheap filler.

"...Second, the stench it gave off... way too artificial and way too childish of a banana smell...." Read more

"...Maltodextrin is a really cheap ingredient, and you can purchase a large 10 lb. tub of pure maltodextrin for less than 20 dollars!..." Read more

"...Let's talk about the positives.Positives:1. Price point: cheapest price per lbs out of all the other proteins I found.2...." Read more

"...some of the most satisfying poops of my life, but other than that, not worth it...." Read more

111 customers mention68 positive43 negative

Customers are mixed about the calories in the product. Some mention that it is great for high calorie intake and a substitute for meals, with a good carb source (maltodextrin). They find that it increases their appetite and doesn't get bloated. However, others say that they wish it had more calories per serving, as it contains a high amount of sugar, cholesterol, and saturated fat.

"...It's a perfect complement to Top Shelf King Maker, as it offers the essential fuel my body needs for muscle growth...." Read more

"...- Somewhat high sugar. This product does not add any sugar* However that doesnt mean it doesnt have enough already. its not very high...." Read more

"I use this for weight gain and it’s been an excellent caloric supplement...." Read more

"...me with it, idk how but since I’ve been taking it I have had an increase in my appetite...." Read more

83 customers mention53 positive30 negative

Customers are mixed about the blending of the product. Some mention it blends well, while others say it doesn't mix very well. They say it's easy to mix with a blender and that it mixes equally well with milk or water. However, other customers say that it doesn’t mix well into water at all.

"...supplements don't worry, Serious Mass tastes awesome, mixes very well in a shaker bottle, and contains exactly what im looking for in a weight..." Read more

"...It's really hard to mix two scoops well and I usually do one scoop and half the stated nutrition...." Read more

"...it has everything this has + creatine, mixes wayyyyy better than this, and doesn't taste like an overloaded sugar desert...." Read more

"...say the vanilla tastes VERY GOOD (being you like vanilla) and mixes fairly well if you have the proper shaker cup and do a little workout with it...." Read more

63 customers mention42 positive21 negative

Customers are mixed about the ingredients in the protein powder. Some mention that it has a decent amount of protein, and is nutritionally okay. However, others say that the product ingredients made them feel sick, and that the main ingredient is maltodextrin, which is not technically sugar.

"...Its carefully crafted blend of ingredients is specifically designed to promote lean muscle development, and I've experienced remarkable gains in a..." Read more

"...In short, the main ingredient is maltodextrin, which isn't *technically* sugar (this is how they can put 0g of sugar on the packaging), but it..." Read more

"...+ Tastes great+ Loaded with calories+ Contains 3 different types of Protein. (Whey, Casein, and Egg Protein)+ Very affordable..." Read more

"...Nutritionally it seems okay. It's got everything you need, except creatine...." Read more

71 customers mention14 positive57 negative

Customers dislike the size of the product. They mention that the portion sizes are huge, the scooper is freakishly huge, and the serving portions are huge. Some say that the recommended portions are extremely high and will not fit into a blender bottle.

"...ONE SCOOP IS EQUAL TO 1 CUP OF POWDER. THAT IS ABSOLUTELY MASSIVE. Following the directions would cause to you finish a 12lb bag in 3 days...." Read more

"...You’re telling me that whole 5 pound jug has 8 servings? The scooper is gigantic. It tastes alright tho" Read more

"...The scoops are huge. Taste is a little sweet, but doable. Haven’t noticed and gains from it. The ON reg whey is what I will be staying with." Read more

"...The scoops are huge, so I split the servings into 2. I’ll take 1 scoop in the morning with 14oz of water & the second after my evening workout...." Read more

A Perfect Duo for Gaining Muscle Mass!
5 Stars
A Perfect Duo for Gaining Muscle Mass!
I am on a journey to increase my muscle mass and decided to combine two powerhouse supplements - Top Shelf King Maker and Optimum Nutrition Serious Mass. The results have been nothing short of incredible, and I can't recommend this combo enough to fellow fitness enthusiasts!The supp to combine with ON's serious Mass is Top Shelf King Maker ... it is an anabolic supplement for men to increase lean muscle growth and it certainly lives up to the claim. Its carefully crafted blend of ingredients is specifically designed to promote lean muscle development, and I've experienced remarkable gains in a short period of time. With King Maker, I felt an increase in strength and endurance, which helped me push harder during my workouts.Optimum Nutrition Serious Mass, on the other hand, is a renowned mass gainer that provides a substantial calorie and protein boost. It's a perfect complement to Top Shelf King Maker, as it offers the essential fuel my body needs for muscle growth. This supplement helped me hit my daily calorie and protein targets with ease, ensuring that I never fell short on the nutrients required to pack on muscle.The combination of these two products has been next level for me. Not only have I seen noticeable increases in muscle size and definition, but I've also experienced faster recovery times between workouts. This means I can hit the gym more frequently and maintain a consistent workout routine, which is crucial for muscle growth.One concern that some may have with mass gainers is the potential for unwanted fat gain. However, by using Top Shelf King Maker alongside Serious Mass, I've been able to maintain a lean physique while still adding mass. This is a testament to the targeted approach of King Maker in promoting lean muscle gains.In conclusion, if you're serious about gaining muscle mass and you want to do it the right way, the combination of Top Shelf King Maker and Optimum Nutrition Serious Mass is a winning strategy. These two supplements work in harmony to help you achieve your muscle-building goals, and the results are simply outstanding. I've never been more satisfied with my progress, and I owe a big part of it to this dynamic duo. Give it a try, and you won't be disappointed!
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Top reviews from the United States

Reviewed in the United States on March 20, 2024
Flavor Name: VanillaSize: 6 Pound (Pack of 1)Verified Purchase
Reviewed in the United States on November 9, 2023
Flavor Name: VanillaSize: 6 Pound (Pack of 1)Verified Purchase
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5.0 out of 5 stars A Perfect Duo for Gaining Muscle Mass!
Reviewed in the United States on November 9, 2023
I am on a journey to increase my muscle mass and decided to combine two powerhouse supplements - Top Shelf King Maker and Optimum Nutrition Serious Mass. The results have been nothing short of incredible, and I can't recommend this combo enough to fellow fitness enthusiasts!

The supp to combine with ON's serious Mass is Top Shelf King Maker ... it is an anabolic supplement for men to increase lean muscle growth and it certainly lives up to the claim. Its carefully crafted blend of ingredients is specifically designed to promote lean muscle development, and I've experienced remarkable gains in a short period of time. With King Maker, I felt an increase in strength and endurance, which helped me push harder during my workouts.

Optimum Nutrition Serious Mass, on the other hand, is a renowned mass gainer that provides a substantial calorie and protein boost. It's a perfect complement to Top Shelf King Maker, as it offers the essential fuel my body needs for muscle growth. This supplement helped me hit my daily calorie and protein targets with ease, ensuring that I never fell short on the nutrients required to pack on muscle.

The combination of these two products has been next level for me. Not only have I seen noticeable increases in muscle size and definition, but I've also experienced faster recovery times between workouts. This means I can hit the gym more frequently and maintain a consistent workout routine, which is crucial for muscle growth.

One concern that some may have with mass gainers is the potential for unwanted fat gain. However, by using Top Shelf King Maker alongside Serious Mass, I've been able to maintain a lean physique while still adding mass. This is a testament to the targeted approach of King Maker in promoting lean muscle gains.

In conclusion, if you're serious about gaining muscle mass and you want to do it the right way, the combination of Top Shelf King Maker and Optimum Nutrition Serious Mass is a winning strategy. These two supplements work in harmony to help you achieve your muscle-building goals, and the results are simply outstanding. I've never been more satisfied with my progress, and I owe a big part of it to this dynamic duo. Give it a try, and you won't be disappointed!
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16 people found this helpful
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Reviewed in the United States on March 3, 2024
Flavor Name: VanillaSize: 6 Pound (Pack of 1)Verified Purchase
Reviewed in the United States on June 2, 2010
32 people found this helpful
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Reviewed in the United States on March 15, 2024
Flavor Name: VanillaSize: 6 Pound (Pack of 1)Verified Purchase

Top reviews from other countries

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Glzdouce67
5.0 out of 5 stars Livraison rapide et produit bon
Reviewed in France on March 19, 2024
Flavor Name: StrawberrySize: 6 Pound (Pack of 1)Verified Purchase
Joel
5.0 out of 5 stars Good quality, good flavour with milk
Reviewed in the United Kingdom on March 1, 2024
Flavor Name: StrawberrySize: 6 Pound (Pack of 1)Verified Purchase
One person found this helpful
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Vincent
5.0 out of 5 stars Un excellent supplément pour la prise de masse
Reviewed in France on June 29, 2023
Flavor Name: VanillaSize: 6 Pound (Pack of 1)Verified Purchase
13 people found this helpful
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Catastrphique j’ai passé plus que 6mois avec l’optimum whey que je l’ai acheté d’un autre point de vente . Je viens de commander pr la première fois de chez vous chaque fois que je prends la dose les particules s’agglomérent et forme des boules pour le prendre j’ai besoin de les mâcher !! Aspect non conforme de poudre
1.0 out of 5 stars Aspect non conform de poudre
Reviewed in Belgium on February 21, 2023
Flavor Name: VanillaSize: 6 Pound (Pack of 1)Verified Purchase
Dang Quynh Tuan
1.0 out of 5 stars Verry Bad
Reviewed in Japan on September 18, 2022
Flavor Name: Chocolate Peanut ButterSize: 6 Pound (Pack of 1)Verified Purchase
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Dang Quynh Tuan
1.0 out of 5 stars Verry Bad
Reviewed in Japan on September 18, 2022
after drinking .I have acne on my face and back. The problem is that the sugar is also quite high. 31g is a problem for those who want to gain weight but high blood sugar
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Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.