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Optimum Serious MassOptimum Nutrition Serious Mass supplies the tools you need with a whooping 1250 calories per serve, 50 grams of protein, 250-plus grams of carbohydrates and 25 vitamins & minerals. Serious Mass can be used at any time including as a meal replacement, or post workout to increase your quality calorie intake. When used in conjunction with a healthy, balanced diet and regular weight training program, this powdered mix provides you with serious nutritional support to achieve your goals.Optimum NutritionSupplements > Mass Gainershttps://cdn.mrsupplement.com.au/resources/imgs/products/optimum-nutrition-serious-mass.1478480114840.png54.9584.95AUD
Optimum Serious Mass
Serious Mass
Powered By: Optimum Nutrition

High Calorie Gainer to Support Serious Mass

  • Massive 1250 Calories per Serve for Hard Gainers
  • 50 Grams of Quality Protein, Derived from 4 Different Protein Sources
  • Complete Meal Replacement with 25 Vitamins & Minerals
  • Made in a GMP Compliant U.S Facility, Strictest Quality Control

 

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Optimum Nutrition Serious Mass supplies the tools you need with a whooping 1250 calories per serve, 50 grams of protein, 250-plus grams of carbohydrates and 25 vitamins & minerals. Serious Mass can be used at any time including as a meal replacement, or post workout to increase your quality calorie intake. When used in conjunction with a healthy, balanced diet and regular weight training program, this powdered mix provides you with serious nutritional support to achieve your goals.

OPTIMUM NUTRITION TRUE STRENGTH™

True Strength™ is a journey. It never rests, it never quits. It's about overcoming obstacles, accomplishing goals, and recognizing achievements. And then it resets to achieve again. As your trusted sports nutrition partner, ON demonstrates that same passion while crafting products. From the raw materials we source to our state-of-the-art manufacturing processes, no compromises are made. You set the bar higher after every workout, we set the bar higher to redefine the industry standards and ensure you realize optimum results.

CONSISTENCY

Optimum Nutrition has been spotting the efforts of goal driven individuals since 1986. As one of the few companies to operate state-of-the-art manufacturing facilities that are GMP compliant, ON assures that every shake will mix up effortlessly because of its first-to-market instantization process. You also expect each shake to taste the same as the last and your next. That's the kind of consistency ON delivers.

Optimum Serious Mass
Overall Rating
Out of 5
Averages based on 43 total ratings.
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Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2018-01-31 00:00:00
31/01/2018
By far the best mass gaining protein I've tried. Tastes like chocolate brownies and it's easy to mix. A lot of calories per serve which is great, it's been the only protein that's helped me to put weight on. I have an incredibly fast metabolism but since taking this / lifting regularly I've gained 10kg over the past 8 months. No longer referred to as the 'skinny girl' and I couldn't be happier!
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2.7kg / 8 Serves Chocolate
2018-01-25 00:00:00
25/01/2018
I bought this product for my son who has a fast metabolism and medication that decreases his appetite, making him very underweight.
I am very impressed with the results, he has gained 3kgs in 7 days.
Highly recommend and will be buying again.
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Vanilla
2017-10-13 00:00:00
13/10/2017
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2017-10-11 00:00:00
11/10/2017
If you want to gain mass but also do a lot of cardio based workouts then this definitely works well.
I went from 66kg up to 83kg within a few months.
Definitely recommend!
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2017-04-24 00:00:00
24/04/2017
Struggle to gain weight with a fast metabolism but since taking the serious mass product it has helped me gain weight after trying multiple different brands and types if you haven't tried it I recommend you do!
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Vanilla
2017-04-22 00:00:00
22/04/2017
I've been consuming this gainer for a week and I just got 1~2kg. I'm not sure if I can keep gaining weight tho. It tastes awesome with milk.
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2017-04-12 00:00:00
12/04/2017
Great product to get that extra mass. I'm a seasoned weight trainer and wanted to build up a bit more mass (I can only eat so much). I've gained a kg per bag but only at a half serve each time blended with milk, taking it on waking, after training and at night before bed. I should also note that I've seen a increase in my strength as well.
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2.7kg / 8 Serves Chocolate
2017-03-26 00:00:00
26/03/2017
This was first mass gainer supplement I have taken and I am amazed how much of a difference it made to my weight. I managed to gain 2.5kg in a week and a half.

This is my guide for new people who wants to gain weight:
You have to blend it, instead of shaking because when you shake it, it will form clumps and you don’t want that. The guide tells you to blend it for 30secs but I only blend my 10secs on low because I don’t like air bubbles.

I recommend mixing this powder with milk, first you get extra calories (extra 250calories – one scoop of powder and 6oz of milk) and second, it tastes fantastic! And this is coming for a person who struggles to drink milk.

Before I mixed the powder with milk I tried water and boy let me tell you it tasted awful! When you mix it with water it tasted bland, it tasted like cheap chocolate milk, it tasted bland, there was no texture, it is like drinking milo but with lots of water, sculling it was difficult. However it doesn’t affect this product only, it affects across all protein/weight gain powder. Want to enjoy drinking the mix, mix it with milk trust me, you’ll understand why it tastes so good! Rich in texture, and delicious.
Take one serving a day, I struggle to drink a serving at once because you end up having to drink 1200mL after blending. I usually split the serving into two, half a serving in the morning and another before I go to bed.

Want to gain weight? Eat food while you drink this supplement, it makes it easy to consume lots of calories in one go. Generally make the most out of this mass gainer drink, try mixing it with other ingredients like honey and squeeze extra calories into the mix. The supplement isn’t cheap and this is coming from a uni student where everything is a luxury.

Results? I regret not eating enough when I had this (since I was a uni student I only managed to eat 2 meals instead of 3) however I was surprised to gain 2.5kg in about a week and a half – I weighed 66kg but now I weigh 69kg. Which was pretty good.

I recommend this product because it has the highest calories per serving compared to other mass gain products.
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Vanilla
2017-01-14 00:00:00
14/01/2017
Really good weight gainer helped me put on a lot of weight :)
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2016-10-10 00:00:00
10/10/2016
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Banana
2016-08-12 00:00:00
12/08/2016
great quality all round mass gainer
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Strawberry
2016-06-14 00:00:00
14/06/2016
I usually have no issues with the taste of ON products but this one...I find this product difficult to take on it's own. Probably better mixing it with something with stronger flavours...but honestly - who has the time for that? I'd probably go with another gainer personally.
2
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2016-05-18 00:00:00
18/05/2016
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Banana
2016-04-29 00:00:00
29/04/2016
Does what it says. Really helps me stick to my macro goals and build the physic Im aiming for.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
5.45kg / 16 Serves Chocolate
2016-04-21 00:00:00
21/04/2016
Solid mass gainer. Have gained about 3kgs from taking 2 bags of the stuff. It isn't that filling so you can easily eat and supplement without always feeling full
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2014-04-01 00:00:00
01/04/2014
Biggest serving size of any gainer i've ever used, serious struggle to get it in the shaker. Nutritious ingredients, if you can't bulk on this there's something wrong with you.
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-10-09 00:00:00
09/10/2013
Hit a bit of a plateau and decided on a mass gainer to try to kickstart things. The huge improvement I saw with this told me that it was my diet that was letting me down. Now I try to eat better, but I still supplement my food intake with Serious Mass and I think it really does work.
5
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2014-01-14 00:00:00
14/01/2014
Serious Mass is seriously one of the best mass gainers around. I'm a hard gainer and have tried probably every mass gainer around and this is by far the best working protein. Went up 10kg after 2 bags and have no kept my weight steady. It's pretty sweet, so mix it with some extra milk like i do and it's perfect.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2014-02-03 00:00:00
03/02/2014
Greaat value and a great formula that includes some vitamins and minerals as well as protein, including zinc for test boost. A lot more than just emty carbs. A lot easier to split into smaller servings because it is a serious shake.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-10-30 00:00:00
30/10/2013
This is the first weight gain protein I've tried and I really got results. Wish I'd tried it sooner haha.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-11-15 00:00:00
15/11/2013
Everything you want in a mass gain formula, and very effective.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-03-12 00:00:00
12/03/2013
Great tasting product that really helps me put on mass.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2011-03-17 00:00:00
17/03/2011
I have a physical job and a fast metabolism so trying to keep in shape for me was a struggle. A mate put me onto mass gainer protein and I've put on 10kg in the last six months (but still skinny lol). Been playing around with a few different products, and this is the best yet. It's got to taste good because you have to drink a hell of a lot of it! Love the fast shipping and the free samples you guys put in too. Keep it up.
3
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-05-22 00:00:00
22/05/2013
Really cheap weight gainer that does the job. Keeps me fuelled & carbed up. Hard for me to put on size and Serious Mass really helps.
3
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-06-12 00:00:00
12/06/2013
If you after a mass gainer with a good array of protein, carbs and calories than this I think is for you. Normal protein powders just don't work for me and after lots of trials I've worked out that Serious Mass is the best powder for my goals. Calories + are what I need and I sure do get it with Serious Mass. It's a rather large serving size so I end up taking around 5 smaller servings daily which helps me get it down much easier. Over 5kg's under $100 bucks you cant go wrong. Have tried all the flavors and chocolate is my favourite.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-03-03 00:00:00
03/03/2013
Serious mass has helped me gain mass and yet maintain a lean body. I feel fueled before my workout and also take it after. It is good value for the money mass builder.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2013-04-09 00:00:00
09/04/2013
I am a body builder and need huge calories to work out for hours every week. I get just that with serious mass and its 25 vitamins and essential minerals. Good Powder.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2012-07-30 00:00:00
30/07/2012
I have gained 5kg in a month! I would reccomend it to anyone.
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2012-04-12 00:00:00
12/04/2012
Mixing it with serious mass , got weight after 3 weeks, does what it says and well
4
Out of 5
Optimum Serious Mass
Optimum Serious Mass
2012-04-12 00:00:00
12/04/2012
I have been bodybuilding now for just over a year. I have tried many different types of mass gainers but serious mass has all the carbs and protein I need to gain my desired weight. I have put on 7 kilos in the past 5 months! I recommend this product to all those who struggle gaining weight.
5
Out of 5
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I was just wondering how many times a day I should take this and how much?
How much you take is dependant on your body type and diet. Have at least one full serve per day if you find that you struggle to put on weight. Otherwise you can have half a serve per day.
I just want to know if serious mass contain all the amino acids like it counterparts 100% whey protein which have all the EAAs, NON-EAAs and BCAAs in it?
Optimum Serious Mass shall NOT contain the concentration of Aminos that Optimum 100% Whey Gold Standard shall contain.
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