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Customer Reviews

4.5 out of 5 · 160 reviews

Reviews are a representative sample of real customer reviews aggregated from public data and matched to this product; written reviews are representative samples, not verified individual purchases.

4.5

out of 5

Best and most drinkable gainer

Most weight gainer powders are overly thick, overly sweet or leave you bloated and feeling nasty for hours. I've used ISO-Mass since the days GNC used to stock it, and quite honestly there's not another gainer that can come anywhere close. I used to, on two shakes a day, be able to pack on 10-15 pounds in a month on this stuff. I've never had that kind of luck with other gainers. This one is a thinner consistency, mixes easily and goes down easily. Yes, it is expensive, but when you look at the breadth of ingredients in it, you'll understand why. Not only is the protein blend amazing, but it has several types creatine, NO precursors, beta alanine, omega 3s, vitamins and other goodies. It's supposed to be an all-in-one formula. This is the first tub I've purchased in about three years because I thought it was no longer being made. But it must have just been that GNC stopped carrying it. Either way, I'm happy to have found it.

Dean K.·November 21, 2018·10 found this helpful

Crazy Price Increase

I've been using this product for years and have had great results. There is no question that the product works if using correctly. I've bought this product from other sites and here on amazon for $60, but there is no way I will be buying this for $110. I will not be buying this again unless the price lowers. Time to look elsewhere.

Ivy N.·September 1, 2022·3 found this helpful

Workout for this reward

This Mass gainer is the best, at least from my experiences. ISO Mass Xtreme Chocolate is my favorite flavor, as it mixes well with a spoon and 2% milk and tastes EXACTLY like Carnation instant breakfast but is so much better in every regard. I have had the Vanilla Ice cream and it never mixed well for me. Luckily I only had to force down 1 ten pound tub of the Vanilla before I tried the CHOCOLATE. Maybe that is why chocolate is always the most expensive flavor when I look at the choices - its the best, people like it, and it drives the price up! Actually, why are there different prices for the same product when its just the flavor is different?<br />Just getting back into a physical fitness routine, I knew I had to get a protein/mass gainer if I wanted to see better results. ISO Mass has everything that I want in a pwo drink. It even has creatine in it (which I believe they changed from kre alkalyn since I last tried this product)(edit: it has kre-alkalyn in it).<br />As far as results, ISO Mass gives me a little mental edge when I go to workout. I am pleased with the effort I give, the strength gains, and shortened recovery time. I am stronger because I take this - my max, reps, and endurance have all increased - and will continue to increase if I put in the work when taking ISO Mass. Its food that goes right to my muscles. I can feel it.<br />I even think about drinking my post workout shake during my reps - it helps me give max effort knowing I will be fueling back up soon afterwards.<br />Just buy all the other flavors except the chocolate, and maybe the price might go down!<br /><br />Edit: This does not mix that great with a spoon as I use it more. I don't care though as each little chocolate clump is like a little piece of muscle building candy. Also gained 1.5 pounds in 4 days. Working out on my new Stamina X power tower. Noticed GOOD results in the mirror too.<br />Edit2: Although I love ISOmass I will not buy it on Amazon until the price goes way down to around $65.00.

Ethan K.·September 22, 2019·3 found this helpful

MUST BUY FOR HARD GAINERS

BEEN TAKING XTREME GAINER FOR YEARS. BEST MASS BUILDER ON THE MARKET. IF YOU ARE A HARD GAINER THIS IS A MUST TRY. I RECOMMEND THE STRAWBERRY. THE CHOCOLATE DOESNT TASTE VERY GOOD.

Rosa F.·March 7, 2014·3 found this helpful

Gains that taste great

This is legitimately one of the best protein supplements I've ever had. Though I don't have the experience to speak as a competition builder, I've been trying to put on some mass after cutting down. Over the few weeks I've been taking this product, I've noticed increase in mass and improved recovery times. The added benefit is that this is one of the better tasting mixes I had is just another benefit. As a final note, the amount you get for the price is well worth it, and I recommend this to all of my friends who seek to build their bodies.

Victor D.·January 23, 2019·2 found this helpful

Still the best

I'd give this 10 stars if I could. I used half the recommended dose and I still blew up. I took half 30 minutes before going to the gym and the rest during. But I have a high protein diet and I'd mix it with milk.<br />The taste isn't the best, but it isn't terrible, far from it.<br />I've already ordered a second.

Mason H.·November 8, 2016·2 found this helpful

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