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Optimum Nutrition Serious Mass
(434 Reviews)
$64.99
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Recent Reviews

Great For Bulking

I used to weigh 130 for 8 years I had struggled with gaining weight my whole life. I started taking creatine ashwaganda and whole foods multivitamins and serious mass protein. Currently weigh 150 i had to take a break from the mass gainer as I was gaining weight faster than I wanted so I have been off it for about 3 seeks and I am still 150 and now I am caught my strength up to my body weight and now will continue the bulk to hopefully 160 by the end of the year the ultimate goal is 170 for me personally 5'10 male.

Matthew AVerified Buyer

great protein shake

julianne lVerified Buyer

Does exactly what it's supposed to do!

Does exactly what it's supposed to do: adds mass while giving you extra "umph" when strength training! The key is consistency. It's definitely not bad tasting especially if you're a true fan of whatever flavor you select and easier to drink than some other mass gainers I've tried. Make sure to keep hydrated with plenty of water as this product may make you feel constipated over time. It's up to the user on how to adjust to the obvious results of extra body mass but I do guarantee that it works. I've personally used this product off and on (when I can afford it) for two years and going.

Lindale LVerified Buyer

AWESOME

Very good price tag, fast shipping, I have no complain, buy again

Enius PVerified Buyer

Absolutely amazing

Ryan TVerified Buyer

10/10 but only with oatmeal, Milk and Peanut butter

Gets u nice and chubby u have to take it with milk and peanut butter and oatmeal

Billy BVerified Buyer

Serious mass

I love the chocolate version a lot, reminds me of instant carnation breakfast mix. I can drink it consistently day in and out, gives me lots of energy and helps pack on the weight.Its nice to have a switch up every once in a while and the vanilla flavor for the summer time seems even easier to get down. Two thumbs up

Samuel KVerified Buyer

It's good, however you can't really taste the strawberry.

Edouard FVerified Buyer

Perfect flavor and impact!!!!

Zsolt SVerified Buyer

Can't eat 5,000 calories? Drink it.

Put on 15lbs in 3-4 months putting 2 scoops of this, 3 scoops of ice cream, 2 spoonfuls of peanut butter, and finishing that off with whole milk in a shake, in addition to eating until I wanted to puke everyday (whatever high caloric/high protein meal works best for you.) Not a clean bulk and not for everyone, but if you're lanky and need to bulk for football or any athletic activity, this might be right for you.

Brandon SVerified Buyer

Buy it

Adding this to my weight gain journey has made a significantly positive impact. The flavor tastes amazing. I do feel like I am gaining and maintaining weight.

Riahna EVerified Buyer

Solid protein

Has a great overall chocolate taste and mixes well in blender or bottle. Plus creatine already in.

Zach TVerified Buyer

I'm starting to see results

I love it I'm starting to see results great product

Germaine WVerified Buyer

It is so hard for me to GAIN weight. I've gained a couple lbs. S.Mass has at least stopped the weight loss! Thank you

Richard CVerified Buyer

Too expensive for such little amount

Chelsea SVerified Buyer

Se tardó muchísimo

Se tardó demasiado en llegar

JOSE QVerified Buyer

protein

nice, and delicious.

Mohammad HVerified Buyer

Great product

Has been working wonders for my weight gain & keeping the gained weight on. I've noticed visional results for me two weeks after first starting. I drink two 22oz shakes a day.

Michelin JVerified Buyer

GREAT if you have a fast metabolism

Amazing product, haven't been able to put on weight ever. Added this to my diet once a day and made a HUGE impact. Finally putting on weight and muscle. Feeling much better in my skin. Struggled with having an extremely fast Metabolism all my life it's great to finally find something that works ?? will definitely continue to purchase ?? thanks

Frank CVerified Buyer

Get it gurrrrl

Good stuff

Dustin CVerified Buyer

Mass Gainer

this product has helped me gain 3 pounds in just a week! will definitely continue using it to help me hit my goals

jasmyn mVerified Buyer

Like it!

It is great! I have been using it for about 1 year and I love it! It has helped me to gain weight and to build muscles!

Xheni AVerified Buyer

tastes amazing with fruits and<br />milk

shirley jVerified Buyer

Great taste/weight gainer

I really like the peanut butter flavor. It tastes great with milk. You have to drink it cold in order to have a better taste going down. I have been adding a spoon full of peanut butter to the mix <br />as well for extra calories. I have gained a few pounds, but nothing to noticeable yet. I will keep drinking it though since it tastes good.

Jay HVerified Buyer

Completely satisfied

Great product , fast delivery service.

Tracy SVerified Buyer

Great product, my only gripe is it's a little difficult to mix. I have to split it into two blender bottles if I want to make one full serving. Other than that it tastes great and is filling.

Christopher JVerified Buyer

This is for my Grandson and he thinks it's great.

Frances ZVerified Buyer

Great product for swimmers

Helped me to reach my macro goals daily, tried blending with some carbs worked out well.

Cal LVerified Buyer

Great product

Michael RVerified Buyer

Wow, serious Mass is every thing that is says it is. Taste is like chocolate malt,very smooth,easy to blend,,I would recommend .

leonard hVerified Buyer