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Oat Bran Fiber
14 servings
Oat Bran Fiber
14 servings
5g of dietary fiber
supports regularity, gut health, satiety, and nutrient absorption
formulated with a scientist-recommended dosage of beta glucan
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Gut Friendly

Oat bran fiber supports satiety and nutrient absorption. It is also high in beta glucans, a prebiotic fiber shown to help improve cholesterol.

Avoid Bloat

Fiber is vital for a healthy digestive system, and is lacking in most people’s diet. It supports regularity, proper microbial levels, and ease of eliminations.

Our Promise

Expert Driven FormulasExpert Driven FormulasClean recipes, formulated by nutrition and fitness experts for maximum effectiveness.
Supports Your Personal GoalsSupports Your Personal GoalsCustomized protein blends that help you meet your goals and make personal gains.
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Registered Dietitians
1:1 access to our R.Ds who will guide & provide you with resources you need to feel and perform your best.
Clean Label PromiseClean Label PromiseWe’re committed to clean ingredients -- free from preservatives, artificial flavors, sweeteners or dyes.


  • Photo of Nikki B
    Nikki B
    5/5 Stars
    The collagen is a great add to the protein powder.
  • Photo of Dan C
    Dan C
    5/5 Stars
    Great product, great taste, very effective
  • Photo of Nikki S
    Nikki S
    5/5 Stars
    The fiber keeps me feeling full & helps my gut health.
  • Photo of Nicole D
    Nicole D
    5/5 Stars
    Love gainful but also loved the advice from the RD!
  • Photo of Hagan S
    Hagan S
    5/5 Stars
    The strawberry lemonade tastes so good with the strawberry pre-workout! Gets me ready for my workout
  • Photo of Jossy M
    Jossy M
    5/5 Stars
    I’ve tried multiple protein powders on the market and find them to be too chalky and too sweet for my taste. This is a game changer! Light, airy, smooth - PERFECT!
  • Photo of Stephanie K
    Stephanie K
    5/5 Stars
    I have digestive issues, and this is the first protein that does not give me any bloating or pain when I take it. Would recommend to anybody.
  • Photo of Tommy C
    Tommy C
    5/5 Stars
    So nice to be able to switch up the flavor day after day. Makes the morning protein shakes not so monotonous.
  • Photo of Alan C
    Alan C
    5/5 Stars
    Great creatine at a great price, I can tell it is high quality and compared to others I've used.
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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
Review your nutritionProvide suggestions on your diet and eating habits
Offer personalized advice
Offer personalized adviceTo help you get the most out of your protein
Recommend lifestyle improvements
Recommend lifestyle improvementsTailored to your goals

Complete Your System

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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
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