Growtein™ Lean Mass Gainer

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  • Growtein™ Lean Mass Gainer
  •  30 Grams of protein per serving
  • 45 servings per bag

  • Choose from 4 delicious flavors

  • Also includes, BCAA, L-Glutamine and Creatine Monohydrate 

Supplement facts & flavors

Candy Bar Blitz


Oatmeal Cookie


More Gain. Less Pain.


Growtein™ is a Whey Protein Isolate (WPI) & Whey Protein Concentrate (WPC) blend that has been the keystone recovery protein of our most competitive and extreme athletes for over a decade! Our lean mass gaining formula hosts not only a high-quality protein source that absorbs at different rates in the body but we've also included Creatine Monohydrate, BCAA's and L-Glutamine. Putting your muscles in the perfect environment to recover and grow, getting you back in the gym faster.

Growtein is 4 products in 1!


We took our best-selling protein, Whey Superior, added BCAA's, L-Glutamine and Creatine Monohydrate, and made the best lean-mass building product on the market. We've covered every angle from muscle recovery to replenishing muscle energy expenditure... Growtein truly has it all

Suggested use: Shake or mix 1 serving into 8-10 oz of water until completely blended.


For a delicious milkshake consistency, use 6-8 oz of liquid for a thicker consistency

15 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Unknown on Dec 11th 2022

    I’ve been using this protein for years. Excellent results, mixes well, tastes great & never feel bloated from it.

  • 5

    Posted by Paul on Mar 31st 2017

    This is great tasting!

  • 5
    Great supplement!

    Posted by Mike Meining on Feb 12th 2017

    Growtein builds muscle weight nicely. I take every morning before my workout. It mixes well in a shaker cup (no need for blender), tastes great, and since I'm lactose intolerant it doesn't disturb my digestive system like many other supplements. I've been taking this for several years and it's by far the best supplement I've ever taken!

  • 5

    Posted by Joe G. on Feb 1st 2017

    For great gainz and recovery, I like my Growtein. The flavor of the chocolate can't be beat either.

  • 5

    Posted by rosa on Nov 14th 2016

    Loved the flavor, no chalky aftertaste and provides more grams of protein than most.

  • 5
    All-Time favorite

    Posted by Dan on Oct 24th 2016

    My all-time favorite product. I can get everything I need to improve my size in one shake. All the flavors are delicious, and have great texture (no clumping). This is a lifetime product for me!

  • 5
    One of the Best

    Posted by KyleI on Jun 28th 2016

    Not only does this taste great, but I also noticed the addition of lean muscle too. I'm very satisfied with this product and highly reccommend JBN as a whole.

  • 5
    Great product!

    Posted by Mike Meining on Jun 5th 2016

    I started using JBN Growtein a few years ago, wanting to add more muscle, give me more energy in my gym workouts, and avoid the digestive issues I always had with other protein powders. Growtein gives me all those benefits, being especially tolerated by someone with lactose intolerance. I like all the flavors, chocolate is my favorite, and they mix as well with water as with milk in the hand shaker..

  • 5

    Posted by Doug Overman on Mar 6th 2016

    Amazing taste and perfect for those who want to get the extra protein and nutrients to gain some quality size from a quality product!! I will ALWAYS order Growtein for my off season go to!!