Optimum Nutrition : Serious Mass Weight Gainer

Put on 8kg of muscle thanks to 2 of these shakes a day in just 1.5 months and I'm an ectomorph so thanks to these guys

Really good product and happy with my order. Cheap price too compared to other websites.

Cookies and cream by optimum nutrition is by far the best mass gainer I’ve used the taste is unbelievable great nothing else I’ve used compares to this gainer. I also add milk and fruits aswell to get extra calories and vitamins and comes out very nice not very thick also which most gainers turn very think. Love this gainer my number 1 gainer to turn to that shows results very quickly.

I think the product is very good considering the price. I' use it and it works very well with me in weight gain side. Good Product with what's included

I received this gainer in time and I really liked it! It helps a lot to gain weight when you put the right level of intensity into your workouts!

Serious mass is one of the best gainers I have tried. It tastes great, mixes well and is a great price for a 5kg bag - highly recommend.

Best Weight Gainer. Amazing Size Gains. It has everything you need to put on mass. Great Carbs to Protein ratio and mixes easy with great taste. Chocolate is the best.

My mate told me about this and wasn’t sure at first but it actually does help me gain weight and increase my strength.

This was one nutritional mass gainer that’s shows results in the first week on your body and improvement in performance.

Good product but doesn’t shake up well, leaves clumps but if I put it in the nutri bullet it’s lovely, really nice taste.

the best product for masive mass

Great for getting more protein & calories in throughout the day. Recommend this with milk rather than water.

Really nice weight gainer.. Ive ordered the banana flavor and tastes like a real milkshake... easy blend to use in a shaker bottle. i only take a scoop and a half twice a day and put on a stone in weight withing 3 weeks with the 2.5kg tub .. just ordered another 5kg bag.

Doing two scoops straight off the back twice a day with regular meals is definatly not for the weak. I started off 1 scoop just once a day with regular meals then upped it. Now one shake mid morning after breakfast and one before bed.. it does was it says you just have to stay on it!

My usual go to weight gainer

Best tasting and value for money protein mass gainer you can buy.

For anyone looking to get big fast Serious Mass is well worth a look. Compared to a lot of gainers it is pretty easy on the old stomach but just be careful of using this if you are predisposed to getting fat because it is VERY HIGH in calories!

Serious mass is a weight gainer which because it's so high in carbs makes it best suited for those with great glucose tolerance or who are seriously underweight. While I added good mass on it, I found it best used at half doses as otherwise the carbs became overwhelming so I ended up adding a little protein to bump up protein and reduce the sickly feeling from too many carbs. Serious mass is probably better for people who have higher training demands than me!

I have used some products in my time but this is just cheap muck. Taste is awful, doesn't mix properly and is basically just a heavy amount of maltodextrin. I'll stick with my usual gainer.

I was looking for a while for a low sugar weight gainer at a good price and since I found Serious Mass and it ticks all the boxes I will stick with this for a while now. Tastes good, mixes up ok and lots of calories for gaining weight quickly.

Tried this after the lads in the gym recommended I change my diet. Within 6 weeks of taking it I noticed much bigger gains than with any other products.

I really liked this product, it has a high calorie counts (of which many are carb sourced) and I found the protein content (50g) to be to my liking. Also this is packed with bcaa's and glutamine and creatine (although I would supplement this with extra creatine as the content is low). Ingredients 10/10 Flavour and MixabilitynI enjoyed the banana flavour but found the vanilla a bit too rich and sweet. Mixed fine. ValuenI managed to put on good quality with this product and it's relatively cheap considering most protein retails at double this price for the size. Overall: 9/10