Loading... Please wait...Complete Weight Gainer with 52g of Amino Acids per Serving!

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MUTANT MASS is without a doubt the most complete and effective weight gainer formula in the world! When it comes to packing on quality mass, bodybuilders all over the world rely on MUTANT MASS. After years of relentless research and development, MUTANT MASS has been specifically formulated with one goal in mind — to help you quickly pack on MUTANT size!

Every serving of MUTANT MASS delivers 52 grams of muscle-building protein featuring the Mutant Pro Multi-Staged 10 Protein Matrix. The unique protein matrix found in MUTANT MASS supplies the body with 10 complete protein sources, which provides an immediate and long-lasting increase in protein synthesis! When you combine the powerful protein matrix with the other key anabolic nutrients found in MUTANT MASS, you have the ultimate formula for rapid gains in rock-hard mass!
A wide variety of protein sources deliver a vast cross spectrum of amino acids, which triggers greater uptake by muscle cells. The multi-staged protein matrix found in MUTANT MASS is designed to shuttle more usable protein into your muscles and flood them with a continuous supply of muscle-building amino acids — all day and all night!![]()
MUTANT MASS has been developed based on mountains of scientific evidence from a countless number of research studies. Precisely engineered to help you quickly pack on pounds of muscle, every aspect of the MUTANT MASS formula has been researched and tested to ensure it is without a doubt the most effective weight gainer on the market!
A research study conducted on weight-training athletes showed just how effective MUTANT MASS can be at building muscle and increasing strength. In this study, subjects that consumed a weight gainer shake, which contained nearly the exact amount of calories found in 2 servings of MUTANT MASS, gained DOUBLE the amount of lean muscle mass as control subjects! On top of that, test subjects also increased their max bench press by an average of 31.5 pounds! So, by simply adding 2 servings of MUTANT MASS to your daily diet and training program you can DOUBLE your gains in lean mass and increase your max bench by over 30 pounds!1![]()
In a real world study, 23 experienced weight lifters used MUTANT MASS for 10 days and the results were as follows:
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Active8 Nutrition will not be held responsible for any product information, statements, ingredients, or any ingredient changes of this product, or any product our company carries.

Active8 Nutrition will not be held responsible for any product information, statements, ingredients, or any ingredient changes of this product, or any product our company carries.
Rating: 9 out of 10
Posted by Maciej on 13th Dec 2012
Good taste, any hard gainers could easily out on weight with this product.
Rating: 9 out of 10
Posted by StilTryinRD on 26th Oct 2012
Mutant mass works! I started using mutant mass a few weeks ago and already gained 5lbs...which is REALLY hard for me to do. Mutant mass, I'm lovin it!
Rating: 9 out of 10
Posted by Dave on 24th Sep 2012
This is a great weight gainer and I highly recommend it. Usually weight gainers don't help me but this formula definitely works. I put on 10lbs and my strength and recovery went through the roof!I'm taking the chocolate, which tastes awesome, and my buddy is taking the strawberry banana which is also really good! I cant wait till my next order comes!
Rating: 10 out of 10
Posted by Greg on 22nd Mar 2012
I have tried a lot of weight gainers, but Mutant Mass is definitely one of the best. It mixes easy and tastes great. I put on about 8lbs in a month... Highly recommended.
Serious Weight Gainer with 1,060 calories and 52g of Protein per Serving!
Brand: MUTANT
44g of Whey Blend & 17g of BCAAs and Glutamine Triggering Greater Muscle Protein Synthesis!
Brand: MUTANT
You Wanna Get Some Size On? You Will Be Satisfied, Guaranteed.
Brand: PVL