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
885 Total Ratings
Verified Buyer Rating:
8.5
303 Verified Buyer Ratings
Average Taste Rating:
7.9
View Flavor Ratings
6.8
Strawberry
9.1
Chocolate Peanut Butter
- -
Vanilla
8.2
Chocolate
7.5
Banana
7.7
Vanilla
1-20 of 885 Reviews

chrisba91's Rating
10/10
Chocolate
8/10

chrisba91 did not leave a written review for this product.



dpablo7's Rating
8/10
Chocolate
8/10
Strawberry
4/10

Great stuff but doesn't mix well, so if using blender its really good otherwise strawberry flavour doesn't taste really good, i prefer the chocolate one.



kamendedmon's Rating
9/10

First of all most of the bad reviews come from people who don't use common sense and use a blender to mix this stuff. Yes I did try to with just a shaker at first but its pretty obvious you have to use something with a little power. That being said the taste with this stuff is amazing. I love ON because of their quality products but I really despised their chocolate flavored whey, so I was hesitant to try this chocolate flavored weight gainer but figured **** it I need the to get serious about my goals and I don't need some crap loaded with sugar. To my surprise the stuff was phenomenal and I truly enjoy drinking this stuff. Be warned that it is a pretty big scoop and you need two for a full serving. I hate eating and was only 117lbs but if you really are serious about upping your calories it is completely doable to down this at one time, albeit pretty uncomfortable until you get used to that level of fullness. If you don't put on at least 5lbs with this stuff you aren't dieting seriously or are doing too much cardio. Bottom line this stuff works and is a quality product for an afffordable price



b00gie's Rating
3/10
Chocolate
4/10
Banana
2/10

+ cheaper than others - does only mix with blender regardless how much water you use - taste horrible compared to other weight gainers - felt bloated after, did very little for me won't use this product again i am afraid



DaBaRnEs's Rating
7/10
Strawberry
8/10

This was my first purchase of weight gainer. I would have to say that overall I am very satisfied with this product. The taste is great and this shake is pretty easy on the stomach as well. The only complaint that I have is the powder seems to all get stuck to the side of whatever I mix it in. I'm assuming that this is common thing with weight gainer shakes since they are pretty thick, but it is still a bit annoying. I was 162 when I started taking the shake and I am now up to 171 lbs. Just make sure you use as directed and work out hard so that you don't just put a bunch of fat. I can see myself buying this product again in the future, but I will be on the lookout for different weight gainers.



Hamozazinb's Rating
1/10
Banana
1/10

Hamozazinb did not leave a written review for this product.



freakinshredded's Rating
8/10
Chocolate Peanut Butter
6/10

I got this because the reviews was high but it's way too sweet and you can't really taste the peanut butter in it I would of rather stuck with the chocolate it taste much better I can't really describe the taste it doesn't really have a chocolate taste either wish I could return it I give the taste a 6 and I will stick with what I know is good



Vurzion's Rating
10/10
Chocolate
10/10

Hands down THE BEST mass gainer of them all, there's a reason Optimum Nutrition are reputably the best company within the industry! I've been using this for over a year now, and anybody who says it doesn't work is doing it wrong. Use with full fat milk, remember this is to be used alongside SOLID FOODS don't just drink this and expect it to work wonders. I recommend this to anyone who wants to gain solid weight with minimal fat gain (provided that you're training enough) thank you ON!



dangamer's Rating
8/10
Chocolate
7/10

dangamer did not leave a written review for this product.



janeirombullard's Rating
8/10
Banana
9/10

The flavor is ok for a weight gainer, but it doesnt mix well, it definitely helped with my calorie intake



Joesuff218's Rating
10/10
Chocolate
10/10

GAINED 20 Pounds in 2 months, i was having a FULL serving everyday, i split it half in the morning half at night or after my workout. I would have it with 14 ounces of WHOLE MILK instead of 12 oz the calories add up, ontop of that like 3000 cal a day. Dont expect lean mass because this is not a lean shake, I got exactly what i wanted, 15 more pounds to go and im gonna cuttttt. Tastes greatttt



amjad1992's Rating
10/10
Chocolate
10/10

amjad1992 did not leave a written review for this product.



SixPackAbsAttack's Rating
10/10

purchased 12lb of chocolate. tastes great. use blender to mix only poor rating are from ppl aren't aren't srs about putting on extra calories, or ppl who TRY to mix this **** w spoon and cup or shaker bottle. it's HIGH volume intake. the only way to mix this stuff good is w blender. I like mine thick. so I have no problem w 2 scoops. ya the scoop is big. it's supposed to be this isn't green tea, it's MASS GAIN. Lift heavy and consume this stuff. my biggest problem is intake. I don't ENJOY eating. I enjoy training but obviously if I'm lifting and not getting calories I won't grow. I enjoy drinking this stuff. however as insane as it sounds I'd prefer the dose be heavier. like 1800 calories or 2000 calories. hahaha. that would be awesome. my next bag, I shall look for highest calories/protein intake. I only started this stuff 3 days ago so no results yet. but in excited about seeing my gains.



Mvega57's Rating
9/10
Chocolate
10/10

Mvega57 did not leave a written review for this product.



ejacobs927's Rating
8/10

I gained a decent amount of weight pretty quickly. Part of it was the fact that I didn't lift at all prior to taking this supplement. This product gives me the worse runs ever but I think its effective. I **** near gained 20lbs off one bag. I bought another bag but I slowed down because I was getting the biggest ******* beer gut ever.



  • hepy31
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Verified Buyer
hepy31's Rating
9/10
Banana
10/10

hepy31 did not leave a written review for this product.



lilshadow's Rating
9/10

Yep the first time I bought this I was skeptical. About it even though the reviews were good. Before I tried this I weighed 105pounds, after I finished the whole bag I weighted 114 pounds. I ate food and took this at night I started off with 1 scoop then moved on after 3 weeks to 2 scoops. Do not start with 2 scoops if u have never had a mass gainer it will be to much for you stomach. I used this while working out everyday, and kept a log on my workout and how many calories I ate apart from this. This will work!!



omarhisham's Rating
1/10
Vanilla
1/10

Taste is disgusting , mixability is very bad even with blender can't finish the package and throw it away :(



Besho84's Rating
1/10

First you will not find flavor and taste view here because I don't care about it !! it made fat in my belly, I did not see fat somewhere else, firs time in my life I get this gay belly, btw first use with the smaller size was okay, moreover when I was drinking it I was feeling that I must go and sleep, something wrong there



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

I had to review this. This amazing product put 5.8lbs on my ectomorph frame in 8 days! Which is a miracle for me to gain any weight at all. Every time I was shaking this up in my shaker I was singing "It's peanut butter jelly time!" I loved the flavor Chocolate peanut butter. The flavor kept reminding me of a caramel fudge sundae, it was awesome. I had no problem with those massive scoops. I've tried other proteins where they make me put 4 scoops and it comes out to be about the same amount. My only complaint is that they don't offer a 12lb of this flavor. I did start off getting very bloated and gassy, but it wasn't as much the more I drank this product. I would highly, highly recommend this to any hard gainer.


1-20 of 885 Reviews