Optimum Nutrition Serious Mass

Chocolate Peanut Butter 6 lbs
Optimum Nutrition Serious Mass Chocolate Peanut Butter 6 lbs

MSRP: $51.99

Usually: $26.99

Now: $25.49
Reviews (43)

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Serious Mass Overview

Optimum Nutrition's Serious Mass may be the weight-gainer to end all weight-gainers. With an unbelievable 1250 calories per serving, one shake's worth of Serious Mass could feed a small village. OK, not really, but Optimum Nutrition wasn't kidding around when they named this weight gain powder Serious Mass. It's not a product for everyone. But by the same token, intensively-training younger athletes, or those already in peak condition don't have average metabolisms or nutritional needs. For these athletes, getting enough calories to maintain their muscle mass and strength is hard enough, let alone consuming enough to grow quality mass. Ordinary protein powders and meal replacements don't cut it for these users. A weight-gainer would be a better choice, but most of them are just glorified protein powders, with added carbs and an arbitrarily increased serving size. So, don't mess around with generic weight gainers. If you really need calorie-dense supplement to help put on some size, Serious Mass is much better choice for you. Serious Mass is the most calorie-intense shake on the market, packing an unbelievable 50 grams of a mass-building protein blend - more than 8 whole eggs - into each 1250 calorie shake. Besides protein, Serious Mass is also fortified with creatine, glutamine, glutamine peptides, vitamins and minerals, everything you need to build lean mass, provided you're training hard. Granted, not everyone needs that kind of nutritional density, so keep in mind that you can use smaller servings of Serious Mass, if that suits your needs better. You can expect great taste and mixability from Serious Mass, since it's made by protein powder mega-giant Optimum Nutrition. Nobody offers more flavors, or better flavors, in their protein line than Optimum Nutrition. So while you don't use a product like Serious Mass for its taste, it's nice to not have to force a shake down on account of lousy or lackluster flavor. Mix with water, or with milk for even more calories and protein.

Serious Mass Description from Optimum Nutrition
Serious weight gain requires serious calories. However, those who need the extra calories most often have the toughest time consuming enough for them. For many aspiring to be bigger, a highly-active metabolism, weaker appetite and on-the-run lifestyle can make it a real challenge to consume enough calories through whole foods alone. With Serious Mass, you've got nothing to lose and lots to gain. We've consolidated 1.270 calories, 50 grams of protein, 249 grams of carbohydrates, 25 vitamins & minerals, glutamine and creatine into every serving. It's time to stop thinking small; get serious - Serious Mass.

Supplement Facts
Serving Size: 334 grams
Servings Per Container: 8
IngredientAmount% Daily Value**
Calories From Fat70
Total Fat7g11
Saturated Fat4g20
Total Carbohydrates249g93
Creatine Monohydrate1g
Glutamine Peptides500mg
** Percent Daily Value is based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
† Daily Value not established.

Contains milk, egg, wheat (glutamine peptides) and soy (lecithin) ingredients.

Other ingredients: Maltodextrin, Protein Blend (whey protein concentrate, calcium caseinate, egg albumen, sweet dairy whey), Cocoa (processed with Alkali), natural and artificial flavors, vitamin and mineral blend, medium chain triglycerides, creamer (sunflower oil, maltodextrin, modified food starch, dipotassium phosphate, tricalcium phosphate, tocopherols), lecithin, salt, acesulfame potassium, sucralose

Manufacturer's Directions
Add two heaping scoops of Serious Mass to a blender filled with 24 oz. of water. Blend for 45-60 seconds. Then add a few ice cubes and, if desired, other calorie-contributing ingredients and blend for an additional 30-45 seconds.

Manufacturer's Disclaimer
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 that are pregnant, trying to get pregnant, or nursing.

By: on 7/17/2017

Amazing Product

Keeping it short and sweet. The product tastes great, blends well, and definitely packs a large amount of calories for gaining mass. Do note that the amount of powder recommended for a serving is quite a lot, so you might need to make two shakes a day to get it all down. Worth it.

By: on 2/27/2017

Serious Mass Seriously Works

Blend this stuff with 24 oz of whole milk, adds 450 calories and 24 more grams of protein, then add 2 tablespoons of PB, adds another 180 calories and 7 grams of protein. So youre looking at 1,880 calories and 81 grams of protein in 1 SHAKE! Even if you have to split in two to be able to get it all down, thats a lot of calories and a lot of protein! Essential to building mass. So take this on top of a high protein, clean, 2,000 calorie daily diet and mass building gym time and you WILL put on mass. I went from 145 lbs to 185 lbs in 4 months. Remember that consistency and hard work pays off. No supplements are going to work if you arent consistent with them.

By: on 10/21/2016

satisfying taste

Compared to other BULK drinks, that have a mediciny taste, this one is appealing and good tasting. Even when Im on the go, this drink keeps me feeling full. Great product.

By: on 10/12/2016

Great taste

Best taste out of all the serious mass I have purchased. Works good for busy schedules and skipped meals. A good meal replacement every now and then.

By: on 10/07/2016


I have taken a lot of different mass gainers before and this one is the best. Not only for the name but the flavor of the chocolate and peanut butter is better then the rest.

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