Optimum Nutrition Serious Mass Reviews

Loaded with 1,250 Calories, 250g of Carbs, & 25 Vitamins and Minerals to Pack on Pounds*

View Product Info
Overall Rating
8.4
Out of 10
Good
1013 Total Ratings
Verified Buyer Rating:
8.6
373 Verified Buyer Ratings
Average Taste Rating:
7.8
View Flavor Ratings
6.6
Strawberry
9
Chocolate Peanut Butter
- -
Vanilla
8.2
Chocolate
7.6
Banana
7.5
Vanilla
1-20 of 1,013 Reviews

elmagic12's Rating
10/10
Chocolate
10/10

elmagic12 did not leave a written review for this product.



Morse999's Rating
9/10

This stuff is the business. I have been using this for 2 weeks now (vanilla flavour) and already have gained 7lbs. Mind you I have beefed up my own "recipe" I use whole milk, and 2 scoops of vanilla ice cream and 2 scoops of Serious Mass into the blender. It makes a fabulous tasting shake that I have in between regular meals and the taste is excellent. No powdery aftertaste at all. It's filling so don't drink it before your meals. It WORKS a treat and I will be ordering more for sure.



simply8's Rating
7/10
Chocolate
8/10

It is a good gainer, however as somebody mentioned before, you are gaining lots of fat as well. I took less than half of dosage once a day for about 6 weeks and I gained some kilos, but not that lean of course. If you are in the gym 6 days per week and 1 day off, this is the thing for you, otherwise I would pick something with less calories. Mixing was all right and taste as well.



Ahmad202's Rating
10/10

I think is better than some prodets, it's helpful to get muscle



415stayloyal's Rating
10/10

415stayloyal did not leave a written review for this product.



kimani111's Rating
9/10
Chocolate
8/10

kimani111 did not leave a written review for this product.



buareshtaha's Rating
7/10
Strawberry
7/10

buareshtaha did not leave a written review for this product.



Mwokas83's Rating
10/10
Chocolate
10/10

This is my first time trying this product and I love it and it tastes great. I have the chocolate one and I highly recommend if you wanna gain muscle fast.



punnusingh's Rating
9/10
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i gave it to one of my skinny friend he gain 1kg in first week.



aaakens's Rating
10/10
Vanilla
8/10

I've been trying to gain weight for the longest and nothing seemed to work. I tried this out and took 2 scoops a day for 7 days straight along with 4 meals a day and moderate lifting for 4 days. I managed to gain 8 pounds during that short time. Next 2 weeks I didn't use the protein, didn't lift and ate about twice a day. In that time only lost 3 pounds. In my experience this products works and works well. The weight stayed on and wasn't temporary. Very pleased with this and will continue to buy more!



Michaeldoung's Rating
8/10
Chocolate Peanut Butter
8/10

I ordered this because I feel like no matter how much or what I eat, I never seem to gain weight. My metabolism is at lightning speed (which is a good thing) but I wanted to gain weight. I wanted to get bigger and buffer so i ordered the serious mass gainer. Honestly, this thing works FAST. I gained weight in a very short amount of time. 2 pounds in 1 week, taking one serving a day, 4-5 times a week. This is something u use if u need to gain weight fast. The one thing I hated was that it takes very very long to dissolve. If u shake in a blender bottle, be prepared to shake for 2-3 mins if u don't want any clumps. Personally, I like to blend it in a blender with water. Gets the work done real fast.



JocyH's Rating
10/10
Chocolate
10/10

I bought the choco peanut butter and it was good but after a while there was that bitter (?) taste from the PB that I got tired of.. I ordered the choco one and it's delicious! My 13 yr old who needs to gain weight thinks it's a milkshake and can't taste anything " strange" I love it!



Matiasalvarez's Rating
7/10
Chocolate
7/10

Im having the worst experience with this website. I ordered the 6llb chocolate flavor and it's been on back order for 3 weeks now. Terrible !!!



jarnoroeder's Rating
9/10
Chocolate
9/10

jarnoroeder did not leave a written review for this product.



ibbyali's Rating
10/10
Chocolate Peanut Butter
10/10

After having two of these I have seen adding Serious Mass to my diet has been the most effective Protein shake out of many that I have tried and the best tasting shake. After seeing good results from myself and other such as friends,family and other people in the gym. I am glad that i found this product and i can now certainly say "guaranteed results" And it looks like I will definitely stick to this until I have reach to my suitable goal. Then start using another Optimum Nutrition product to help sustain and slowly grow my muscles.



WissamShami's Rating
10/10
Chocolate
10/10

I love everything about this product, I saw results starting from the first week! awesome for hardgainers like me! highly recommended



DiegoVera's Rating
7/10
Chocolate Peanut Butter
8/10

I would say this product is more or less OK. I gained about 9 pounds of muscle since I started taking this for track season, lifting in the morning and practice after classes. The only downside is that my body got less toned and I think it's because of the creatine in it. To be honest i'd rather take something without creatine, and more protein. Good flavor tho good with milk.



zman739's Rating
8/10
Chocolate
8/10

The taste of this product was sort of like a hot chocolate taste, I really enjoyed it. It was hard to mix with milk in a normal shake, due to shaker size. With water it was easier. I do not really buy Mass Gainer but I gained weight so it did the trick. Overall good product.



ash21882's Rating
10/10
Chocolate
10/10

I have just started taking this product. I am a really hard weight gainer and decided to try this out. I have used other products with small gains so I'm hoping this works. The taste is great. I'm using the chocolate and it taste just like chocolate milk. I only use 1 serving twice a day because of the shovel sized scooper inside. Using a blender works great and makes it very smooth. I hope this stuff works but as of now everything is awesome.



arthursilva5's Rating
10/10

This is really good! If you don't have tendency for gaining bely fat just use it! Really helps your body.


1-20 of 1,013 Reviews