blended strawberry gainful shake
unblended strawberry gainful shake
blended mocha gainful shake
unblended mocha gainful shake

A New Protein Flavor,
Every Day


When it comes to flavor, more is always better.

With 6 delicious options, Gainful's Flavor Boosts let you personalize your protein powder like never before. Plant-based, gluten-free, soy-free, and containing 100% natural flavors.

Take The Quiz

A New Protein Flavor, Every Day

When it comes to flavor, more is always better.

With 6 delicious options, Gainful's Flavor Boosts let you personalize your protein powder like never before. Plant-based, gluten-free, soy-free, and containing 100% natural flavors.

Take The Quiz

Step 1: Take the Quiz

Each order of Gainful comes with up to 4 delicious flavors of your choice! Take the quiz to personalize your protein and customize your flavors.

Step 2: Enjoy Your Flavor

Your order will include a month's supply of unflavored protein + single-serving Flavor Boosts.

Step 3: Try Them All!

With half a dozen delicious flavors to enjoy, you’ll never get bored. Log in to choose Flavor Boosts for your next box.