Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Chocolate Peanut Butter, 16 Servings, 5.45 kg, Packaging May Vary

It's helping me put on weight. I added a tablespoon of peanut butter and a banana, tastes really good with the strawberry one. This seems to be the best mass gainer, I've looked around and this is always said to be the best with approved ingredients. It is sweet tasting but if you add some peanut butter it will tone down the sweetness. I'm just doing pushups, ab crutches, planks and dumbbells. I don't go to a gym. With noticeable growth to my arms and chest, just started working on abs to balance it out. I only started to see results after drinking this stuff. Good price on this bigger bag so I think I'll get this one again in the future.

I only use this brand of mass gainer… reason being it sits will in my digestive system, it definitely does what it supposed to do. I have used other brands, cheaper brands but they do not pack the punch this do 💪 I have literally been buying this for over 10 years now & will never use other cheaper products. Yes it’s expensive but quality costs money simple! It mix fairly well. The ingredients are of high quality. In my opinion you will not be disappointed & like I said you will definitely be getting the performance you want. I packed on good quality weight… 2st in 3 months but that’s training 5 days a week keeping meals healthy. Hope you find this review helpful.

This protein powder is an excellent for anyone serious about gaining mass. The large size offers fantastic value, and the mix is effective and potent. It mixes well, taste good and is essential for hitting those high-calorie and high-protein goals. Highly recommended for fast, reliable results!

Tastes actually quite nice for a mass gainer, MASSIVE scoop so won’t fit for loads of shaker bottles. Also can still be slightly clumpy without a blender but not too bad.

I don’t use this protein for the gym I use it cos I struggle to eat normal food and so this sometimes becomes my only source of food and with 1250 calories per shake I know if I drink 2 a day I’ll get all the nutrients I need infact probably more then I’d get from everyday food, I’ve tried loads of different powders and this is by far the best one for taste , filling me up and keeps me looking well, ITS WELL WORTH THE MONEY IF LIKE ME YOU STRUGGLE TO EAT!!!?

I've always been slim/athletic but after a serious illness I went under nine stone and stayed there (I'm five foot ten). I have a fast metabolism and eating the required amount of food to healthily gain weight was extremely difficult to sustain. I tried eating junky high calorie snacks but realised it was a stupid way of trying to gain weight. So after buying this product I went straight in and tried to drink a full serving - mistake! I managed it but felt quite ill afterwards. I highly recommend you start with half or even a quarter serving to begin with, just until your stomach adapts. It's now two weeks later and with trial and error I've found that splitting a full serving into three is best for me. One in the morning, one after lunch, one in the evening. I use full fat milk, ice cream and a banana to boost the calories per full serving to over 2000, and I find a blender works great to give a nice semi-thick smooth shake. When I started a fortnight ago I weighed 8 stone 12, I now weight 9 stone 8, so I've gained roughly 10 pounds in two weeks, with fluctuations along the way. I've just bought another 5.4kg bag and plan to continue to steadily gain until I reach around 11 stone. I bought some weights and with some advice I've started a light exercise programme with the aim of turning the energy to muscle and shaping my body a bit. I have more modest aims than many who take this supplement, I'm not looking to build huge muscles and train super hard, but if you're like me - underweight and a bit unfit - then I recommend this product along with some sort of exercise programme so it doesn't just go straight to your belly. It really does promote weight gain, I've been very pleasantly surprised with the results, and will continue to use the product as needed in order to achieve and maintain my target weight. The chocolate flavour is very pleasant, if a little sweet, and I now have no problem ingesting what I need to in order to gain weight. It may seem expensive, but at £2.50 a day it works out an easy, reliable and cost effective way to supplement your diet without resorting to less healthy alternatives. It works for skinny old me, and I don't see any reason why it shouldn't work for skinny old you! :) Edit - it's now 22 days after I first used the product and I'm now just over ten stone, so that's 16lb in 22 days. People are commenting on the difference and it's done wonders for my energy levels and appetite. So all in all I can't recommend this product any more highly, it genuinely works. Can't say fairer than that! Last update - I'm now at my target weight of 11st, it's taken 54 days for me to put on 30lbs - two stone two pounds in just under two months. That's beyond what I expected. If I could give a final note it would be to watch your body fat as without exercise this product will raise it quite easily. I'm now going to reduce my servings to maintain this weight, with my new increased appetite it's possible that I soon won't need a supplement at all. So that's me signing off, a bit heavier and a lot happier!

Firstly, I don't write many detailed reviews on Amazon solely because I purchase so much from them that it would take me forever. However. Certain items (either very expensive or made to help people) will push me to write a review. Sorry for the long story, but I never tell this to people and want others to understand the struggle some guys have, and that "JUST BULK!" BS does not work for everyone. Thanks in advance to everyone who reads this and hope it helps. I am 19 year old male, and have been skinny since... Forever. I was always bullied about my weight, and this isn't a nice thing to live with. Admittedly, I never really had a big appetite until my teenage years (I guess because of something that kicked in at that point). I then started scoffing down very unhealthy food. Chips, chicken and chips, and burgers. From when I was about 15 till 16. I got a horrible big belly, but my arms were still skinny as twigs. I then calmed down with the fatty foods. I still ate crisps, and to be honest, most of my lunches in my first year of college was just crisps. Then I hit my second year of college, and a friend of mine introduced to me gym. Much later than others in my year. But boy, did it start me on one cool journey. I got my own weights (max dumbells were only 5kg) but I used them 3 times a week and wanted to get good arms. I wanted to prove people wrong. And it failed. I got newbie gains, but that was it. My mates had these arms at 15 lmao. It was disappointing. Fast forward another 2 years. I entered university, and was hitting gym hard. Got my membership and was going 3 times a week. Was eating big meals at uni. Every lesson just eating food. Sandwiches, panini, nandos, everything. I had definitely lost the big belly, but partly because I had grown taller (so could just be an illusion). I had a strong regime, and invested in this mass gainer. I went against my mum's words, and let me tell you. Always listen to mama. She told me to chill with the scoops. Most people here have said how two scoops are grotesquely large. Well I drank straight from the blender, and two scoops with milk just touched the top of the glass. I drank it down every night. Within a month, I believe I went from 9 stone (underweight for a person at 6ft) to 10 stone. I hadn't seen this kind of gain in... Forever. I kept going. Hit 11 stone. Then, the stomach pains kicked in. I suddenly noticed I had to go bust one every few hours, and it was disrupting my daily life. It was bad, and wasn't calming down. I know for a fact that my ignorance killed my stomach. Also, I eat cereal almost every day for breakfast so pretty sure I'm not lactose intolerant. Mid 2016 I stopped the shakes. My weight stayed at 11 stone. But I DID gain the fat. The majority of this weight came from muscle, but I do literally no cardio at the gym, so this caused me to gain a bigger tummy as well. My abs grew significantly, so this also contributed to the large look of my overall torso Area. It really isn't worth doing intense ab work, as I learned, because it just doesn't look any better. If anything, it makes you look more bloated! Anyhoo, my doctor told me to stop the shakes as they were giving me the stomach issues. So I did, and now, I'm all good. Thank you God. Trust me, it's not a fun experience. But. You DO get the weight and muscle you could never get. It's also worth mentioning that I never got any fat onto my arms, legs, etc. Just the stomach. My wrists have never grown, and I literally get depressed about how skinny they are. My arms just don't show the hard work I put into them!! Since stopping the shakes, I started working and ate more food than ever before. I was literally having 6 meals a day, which was major for me. But after 7 months, my weight wouldn't go up again. I had stalled at 11 and a half stone. Then, a few weeks ago, I tried about two days worth of mass gainer. Just for old times sake. And the fact I still had half a bag left lol. I hit 12 stone. Pretty damn epic. But the cramps returned. Now, after seeing other reviews on Amazon, I plan to try and split my shakes up, and use this again. One scoop in the morning, one at night. I currently have a 22g grenade protein bar straight after a gym session. Then a meal afterwards (usually dinner) so then I will have my milkshake. Hopefully, I will send better gains than before and less stomach pains. (side note that since I stopped mass gainer, I invested in Hydrowhey Platinum Protein, it is lactose free and I mix with water, and I have no stomach aches. I have also changed my gym routine and my shoulder, arms and back are looking great so far! But milk and cereal don't give me any issues, so still not sure what the killer ingredient in serious mass is unfortunately). I will go back to using this, and maybe attempt without milk. I'll let you guys know how it goes. Thanks again to anyone that listened to this. Just remember that this DOES WORK! You have to just be careful and test it carefully first. I didn't listen and suffered the consequences. Also like others state, do some cardio to keep the belly away. You should be all good. And to those on the body building forums that answer to hardgainers by just shouting BULK! It doesn't work like that. We have demonic metabolism that doesn't let us get the weight you do. I would be as big as Arnold if that was all there was to it! So good luck to all hardgainers and I'm still with you on this journey to greatness. Thank you ON for making products that really do change people in ways you always wanted. I was skeptical and tor between either a 4 or 5 star rating. However it's my fault (I think) that I suffered these issues with the mass gainer. It does it's job. 5 stars.

Dont often leave reviews, but for this one I think its worth it, there's a few things you need to understand before buying this, for starters we all have different goals and methods of getting there, generally we're looking to gain weight and muscle if we're using this stuff, and it can definitely help there, there's a few things that one has to be mindful of though, as overusing/abusing anything can have negative effects, and thats pretty much what I did, I feel like it should come with a disclaimer or warnings, but then it's not like it's been through a controlled study held to scientific standards so thats probably why it doesn't. The first thing everyone should understand is you need 0.6-0.8g of protein per pound of bodyweight in your diet to gain muscle, and you need to eat at a calorie surplus to gain muscle and weight, great, this shake can help with that, however you should be tracking calories and protein, and this shake should only be used for the odd time you have to catchup or make up the difference of what you didn't get from food. I know thats not what anyone wants to hear, they want a simple quick fix, like anything in life shortcuts either aren't really shortcuts or they come at a price, and that's what has happened with me. So I had been using this everyday, for maybe 2 and a half years, at some point I developed the more severe form of acne, ive always had spots here and there throughout my life, but the more severe form is a different ballgame, I have cystic and nodular acne, can be pretty painful, often cant be burst, even when they are they just come back exact same location, often they last weeks or months and by the time some cleared up for me, there would be new ones, mostly on my face, back and shoulders, can't tell you how badly this has impacted my mental health, imagine being a skinny ectomorph your whole life and you finally put on some muscle and weight, start to look decent, get compliments often and then you end up with big red lumps all over you, a big part of me trying to gain muscle was for my confidence and self esteem, so this has been a big blow to my confidence to say the least. I stopped taking this shake several months ago for a few reasons, dairy especially casein in cows dairy is very inflammatory, even shown in studies to swell the prostate, the high carb content, the high sugar (very inflammatory), and the maltodextrin (spikes insulin very fast). Now I do and did have some dietary issues, ive never really tolerated cows dairy very well, if you suffer from bloating, sinus infections, migraines, you might want to look at how much dairy you consume and consider cutting down or cutting it out, even as a 1 month trial, I get nobody wants to quit dairy, took me a while to accept facts, but I digress. So, my experience with this shake has been a net negative, what appears to have happened is ive become quite insulin resistant, I believe that overusing this shake for a long period of time spiked my insulin so frequently for so long at a time that now insulin resistance is kicking in too often, this is the cause of many illnesses, including polycystic ovarian syndrome, cystic acne and more. Insulin is pretty anabolic, as in spurs muscle growth, this is great so long as you dont hit resistance, its essentially the 'spillage' that does the harm, combine this with the IGF-1 in dairy (Insulin Growth Factor, its meant for baby animals to rapidly grow big and strong, its also similar enough to insulin that it works for us the same as insulin) and you have a recipe for some bad maybe irreversible health problems. Many people will concede that sugar, and dairy alone can cause or exacerbate acne, in this cocktail its basically acne food. Ive done a fair bit of research on acne for a while now, had about zero knowledge before on it, and now ive completely eliminated the shake from my diet, also going dairy free right now and doing a low carb no sugar diet in an attempt to get this all under control, already have scars on my face and shoulders from lumps that just sat there inflammed for months, fyi the reason they mostly appear on shoulders back and face os because this is where the majority of our androgen receptors are, androgens being hormones aka DHT, testosterone, estrogen etc, insulin resistance will create excess androgens, spurring the body on to keep making new tissue and hence the hard inflammed lumps, DHT tells the sebaceous glands to just keep on producing to, so this really is all a perfect storm when the conditions are right. In summary ive ended up in a pretty difficult position, my weight isnt much different from when I started tbh though I have gained muscle, but now struggle to hit calories targets with the kind of things I need to avoid now, most veg, most fruit, cant seem to even tolerate goats milk which I used, its a different less inflammatory form of casien in goats milk btw. Hoping if I can give my body some time to recover now, I can get rid of this acne, and get back to eating how I was before without massive lumps appearing just hours later, and eventually start on the road to building more muscle and weight again, right now my only option is to try to preserve and maintain the muscle I have, easy to meet my protein targets, more difficult to hit the calorie targets on what is basically a keto diet now, which the last time I trialled it for 2 weeks and it absolutely made a significant difference, ive considered it my nuclear option for sometime now and realized in the last few days I have no choice, if I get any more scars im never going to want to be topless Infront of anyone, and when I think of that I think what was the point in the past few years hardwork, very depressing tbh, im sure there's some fellow ectomorphs can relate to this.