Optimum Nutrition Serious Mass - 12lb / 5.4 Kg

“ Ehh con mi amigo es producto es no bueno si mi abuelo es alto and mi madre es bonito y tu es punta con grande bolas ”

Posted by Captshiznit

“ Best gainer on market- I only take 1/2 servings- 600 calories and 35g proteuin when taken with milk. Need to mix it in a blender though- doesnt mix to well in a skaker as lots of powder. Tastes great and is easy to drink. Put on 30lbs so far! ”

Posted by Fraser

“ Awsome product gained 2.5 stone in 2 months ”

Posted by

“ Awsome gained 2.5 stone of muscle in 3 months ”

Posted by Rl

“ This is by far the best gainer iv used.If u follow the directions u wil def put on weight. i got stronger and heavier but ur body fat wil increase due 2 high amounts of calories.mixes n tastes gd but takin 3 times daily it starts 2 become a chore. ”

Posted by

“ Had great gains with this. The best weight gainer I have used so far. It fills you right up, and I also recommend taking 2 half servings otherwise you might feel overwhelmed. You need a blender to mix this as it is very thick even with half servings ”

Posted by

“ Helped me gain just under a stone after using for only 1 month. Obviously very effictive, and doesnt taste as bad as people say. Is very hard to mix though, you will definately need a blender. ”

Posted by Will

“ Hi just great gained 3,6 lbs in an week. superb ”

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“ Tastes like crap, i have to hold my nose to swallow it, its that bad!!!! ”

Posted by Cwilson

“ Great product, I've gained a stone in 3 weeks. aaaaaaaaaby far the best weight gain formula on the market! ”

Posted by Ben Patterson

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Posted by

“ Good mass gainer, dunt mix too well in shaker tastes ok but you only in that 12lb bag gt 16 servings due to the amount of powder youre suppose to use the scoop u get with it is like a excavator! I put on 4lbs in 2 weeks with gym routine so Not bad! ”

Posted by Jerv_2424

“ Quite a good weight gainer, tastes fine. However it made me feel really sick 30mins after taking it which i'v never had with a weight gain suppliment. So had to stop taking it! ”

Posted by Alex

“ Ive put on 4lbs in a week training twice a day so have to give it credit for that mixes ok with a shaker best use a blender tho taste pretty good. although i would highly recommend taking 1/2 the dose twice a day otherwise there is just 2 much powder ”

Posted by

“ Not the easiest supplement to mix and considering it contains artificial flavouring it tastes absolutley disgusting mixed with anything, however if taken as reccomended anyone could gain a stone a month on this stuff. ”

Posted by Jay Cutler

“ I have 2/3 scoops in milk = about 2 pints daily, with proper eating, and i gained 1 stone, in 1 month, but it does get hard to drink when your full up, day in day out, but it works, im about to buy my second load, due to the size of the bag, ”

Posted by Tkd67

“ Great Product i gained 2 stone in 2 months, although i dont take the rec dose i take less, as stated it does become a chore, but does the job...you will however gain a lil fat round the waste...but good product ”

Posted by

“ I bought the strawberry flavour of this and it is disgusting, you also need to mix it with a blender which makes it a pain as you cant have it on the go. it looks good on the package tho stats wise (cals, protien etc) if you can get over the taste! ”

Posted by Dave

“ I cant actually comment on anything such as effectiveness yet so ignore my ratings for that. However, i started this today and the vanilla flavour has to be the WORST tasting shake i have ever,ever had. Ill stick it out and report back with results! ”

Posted by Ed

“ Gd for mass although a full serving is about 2000ml of liquid (two shakers full which is a bit hefty) ”

Posted by A.c

“ Great product for winter, that is if u can actually mix it! the mass you'll gain from it well out weighs any mixability and taste issues. oh and be prepared to hit the cardio hard in summer cuz with 1250+ calories a serving you'll gain fat as well ”

Posted by Ian S

“ Bought this product due the reviews, after using this and following weight train program, i did gain 2 stone in weight in 3 months, tate not to bad, but use blender to mix, 7 shakes a day? no chance, 3 is a real chore.... ”

Posted by Lee

“ The chcoclate flavour in milk taste like choc brownies its delicious! Mixes well in a shaker but you gotta shake hard for a good 20 seconds. Only complaint is its quite expensive per serving. ”

Posted by J.b0mb

“ Definitely the best weight gainer out there. Also contains creatine which is great. Only have half the serving but twice a day, you wont gain fat like that. Overall a good product. Stack with cellmass or torrent with a good protein.... ”

Posted by Darius

“ Love this product buy it every month, best mass gainer i have tried (so far), havnt gained any fat with this product, good taste, easy to drink half, gret brand, use half servings as a snack, wouldnt mind seeing how it compares to PVL monster mass ”

Posted by Owain

“ This is rank the taste is f@+cking horrid takes ages to digest and gives you unwanted wind when training and your post drink leaves you feeling sick for hour. save you cash and get mammoth had mass gains from it and dont leave you sick. ”

Posted by Chris

“ Gta ”

Posted by

“ Great value for money,taste good,lots of calories,i only have half a scoop in a morning and it works good,i find the full amount too much. ”

Posted by Bob

“ Vanilla tastes awful and doesnt mi well made me nearly throw up.1st time and last time. still yet to see weight gain tho hope will work. ”

Posted by Stewart

“ Terrible taste hard to mix, pharma gain much better ”

Posted by Richie

“ This is the worst weight gain i have ever tried. dont waste your money it tastes fucking rank marvin. mammoth is the cheap and easy way to gain serious mass. end of. ”

Posted by Chris

“ Gained 5lbs in a month using half portions. Doesn't mix well but tastes much better than old weight gainers. Overall a good product ”

Posted by

“ Best weight gain i've used by far! I only use 1/2 a serving 3 times a day whilst training 4 times a week and after one week i've put on 8pounds (4kilos) :) ”

Posted by J Dog

“ Aggy product, helped me put on alot of muscle quickly, will buy again ”

Posted by

“ This is excellent! ”

Posted by Aremkay

“ Works well i was my heaviest while on this, get banana flavour though not anything else. Tastes pretty good with ice (after mixing), be prepared for some good strength and muscle gains but beware of the extra fat too ”

Posted by Mark

“ Used 1scoop (half serving) 2 times aday and gained half a stone in just over three weeks. Choc tastes amazing with both water and milk and u can fit it in a shaker if using 400ml of either liquid. Lasted about 3weeks. Amazing product with gd gains! ”

Posted by Matt R

“ Niceeee...im stacking with OLIMP CREATINE MEGA CAPS 1250, OLIMP ARGI POWER AND PHD ISO7 WITH COD LIVER OIL O3...and im looking animalistic :D ”

Posted by T

“ Used to be good, great taste, mixed fine in shaker but recently they changed the ingredients and now is the worst tasting weight gainer ive tried and doesnt mix well at all in shaker! ”

Posted by Uzzy

“ Not really had the product long been using for the last few days.So far so gd i have been taking half servings twice a day,it tastes nice with water and even better with milk,mixing has been perfectly fine and i use a shaker,great product will buy ag ”

Posted by Stu

“ Soo good, really works, get great results fast like I gained 5kg in my first month using it and my bf percentage stayed the same at only 6%, soo happy with this stuff :DDDDD ”

Posted by James Taylor

“ Great Value Great results fast, didn't gain much fat at all stayed lean..... POW in the GYM , buying another 2 sacks ”

Posted by EDDie

“ I bought the vanilla flavour and it literally makes me feel sick every time i drink it. Horrible taste & hard to mix. It definitely puts on the pounds & fills you up. I wont buy this product again due to its taste & texture. Awful. Quite cheap tho. ”

Posted by John

“ Best weight gainer on the market, gained 7 lbs in 3 weeks, and people that come on here crying about the taste n how it mixes, please grow a set... a complete embarrassment, as long as the gains are good there should be no problem!! ”

Posted by Richie

“ This prod does what it says on the tin! SERIOUS MASS.Ive used half serves of this twice a week,I started at around 14st at crimbo and now i weigh 17st. Good diet too! Only use half serves at a time coz your body cant take 40g protien (im a PT)! ”

Posted by Joe

“ Serious amount of high quality calories. hard to mix in a shaker but has the desired affects. take 1/2 a serving to work and then another 1/2 serving before bed. fills u right up! so be conscience of when u have it around your meals. ”

Posted by Glen

“ I went through a lot of protein shakes and when I found this.. BLAM on went the weight! Great product if your looking to bulk up!! I don't know why so many reviews complain about the mixability - I drink it from a shaker daily (no blender involved) and it's fine, just give it a good old shake - Don't be shy with it!! ”

Posted by Russell Faulkner

“ Best protein out there for bulking. I hear a lot of people saying how bad it is for you because of the amount of carbs in it, but out of the 250g of carbs only about 20 of it is sugar and 50g of protein which is a great ratio, you don’t want a heavy weight gainer with all these simple sugars in it and with this gainer its perfect for gaining weight or meal replacement if you’re on the go a lot. Taste is great, only tried the chocolate flavour just tastes like chocolate milk. I don’t understand why people are saying it doesn’t mix well in a shaker because it does! Obviously people aren’t shaking it enough. I highly recommend this supplement if you want to put on some serious mass! Also you don’t usually get all the vitamins in a protein shake that you need because they can’t fit it in but in serious mass they have. Can’t say anything bad about this product. Great Taste Great value Great source of calories, carbs and protein. ”

Posted by Tom

“ Iv tried loads of different proteins over the years but i really like this product and have been usin it for the past 7months. since using serious mass i have put on over a stone and a half in weight and bulked up. as long as your using the gym properly and taking this at the right time you should see a noticable difference. the chocolate flaviour is probably the best for taste. ”

Posted by Ashley

“ Put on some serious weight on this gainer! Doesn't mix well so put it in a blender... Some stupid comment on here !! Its a gainer, they all taste rotten... This one isn't that bad !! so get over it you bunch of little girls !! ”

Posted by AN60TWO

“ Good gainer: I split the serving in two and had one first thing in the morning and one in the afternoon. You shouldn't put much fat on if you control the food you eat. Stuffing your face and taking three servings of this a day will make you the size of a house. ”

Posted by Peter

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Posted by Blounty

“ Good quality mass gainer, probably would need to gym everyday / exercise 2 muscle groups a day to make more use of it. Loads of calories, which is good for a hard gainer like myself. It mixes okay I found best to LEAVE IT TO REST AWHILE AFTER YOU SHAKE IT. Also it asks you to add it to 700ml of water or milk..... Nobody has a shake that big to hold the monsterous serving size and 700 ml, 500 ml worked fine ;) .. It's a good product and will be buying again. ”

Posted by Angus F

“ This is the first mass building shake i've bought and i'll never buy a different one. I have bought 2 packets now and have packed on about 6kg in 2 months now with some still to go. Yes it is thick and takes a bit more time to mix, Got a blender and its fine, mix in 2 scoops of peanut butter and its like drinking a snickers bar! No blender just put milk/water in shaker first and just add the powder in a bit at a time shaking it before adding more powder. Fully intend on buying a third packet very soon! ”

Posted by Paul Mason