Engineered for You, by Science

Personalized Protein Powder

Starting at $45 + 14 servings | Ships automatically

Formulated with simple and effective ingredients that work for you based on your diet, body composition and lifestyle habits, our protein formulas help you achieve a wide range of fitness goals, from weight loss to building muscle.

Learn about our ingredients Take The Quiz

Protein by Science,
Flavored by You

It’s good to mix things up. We made our protein powder tasteless, so you can flavor your daily dose of protein however you like. Simply choose up to 4 new Flavor Boosts with every order.

9 craveable flavors include Strawberry Cream, Madagascar Vanilla, Rich Chocolate, Caffè Mocha, Cookies & Cream, Chocolate Peanut Butter, Matcha Green Tea, Cinnamon Toast, and Sea Salt Caramel.

Formulated to Fit Your Goals

Whether you’re looking to bulk up, build lean muscle, push your endurance, or simply move your body through space—we formulate our proteins to meet your individual + evolving goals.

How to Use Your System

We designed our products to be easy-to-mix, match, and modify — so your body gets what it needs to prepare, perform and recover.

  • Daily Dose

    Mix 1 scoop with at least 8 oz. of water, juice or beverage of your choice — every day or as recommended by a healthcare or performance professional.

  • Recommended Use Case

    Ideally, use 30-90 minutes before or after exercise. Mix with any of your personalized Gainful products.

  • Repeat

    The journey is just as vital as the end result. Progress is the point. Enjoy the gains as they come.

Personalized Health By Humans, Not Bots

We know navigating a health journey can be overwhelming. Every Gainful subscription includes free, 1-on-1 access to a Registered Dietitian, who can:

Review your nutrition

Provide suggestions on your diet and eating habits

Offer personalized advice

To help you get the most out of your protein

Recommend a fitness routine

Tailored to your goals

Protein powder shakes

Happiness Guarantee

Love your formula or we'll send
you a new one for free.

Get your formulas