All products

High-Fiber & Fibermaxxing

'Fibermaxxing' is the trend of deliberately eating more fiber. This guide explains the fiber ingredients you'll see on labels and how to add them sensibly.

  • Free shipping
  • Secure checkout
  • Easy returns
77 products

'Fibermaxxing' is the trend of deliberately eating more fiber. This guide explains the fiber ingredients you'll see on labels and how to add them sensibly.

Why fiber is trending

Most American adults eat well below the recommended amount of fiber. US dietary guidelines suggest about 14 g per 1,000 calories, roughly 25–34 g a day for most adults, while typical intake is around 15 g. Fibermaxxing took off on social media in 2025 as people began tracking fiber the way they track protein.

Products in this collection use concentrated fiber sources in powders, granolas, bars and drinks: psyllium husk, inulin (often from chicory or agave), resistant starch (such as green banana flour or unmodified potato starch) and other prebiotic fibers.

How to choose

  • Soluble or insoluble: soluble fibers (psyllium, inulin, oats) form a gel and work in drinks and baking; insoluble fibers (bran, seeds) add bulk.
  • Grams per serving: compare fiber per serving, not just 'high fiber' claims. In the US, 'high fiber' means at least 5 g per serving.
  • Go slow: inulin and other prebiotic fibers can cause gas if you add a lot at once.
  • Resistant starch: raw potato starch and green banana flour are used uncooked (in smoothies or yogurt), because heating changes the starch.

Brands and prices

Brands in this collection include Rotten, NOKA, Struesli, purely elizabeth., Wildwonder and Liquid+. Most products are priced between $21 and $59. You'll also find items labeled gluten-free, vegan, organic and non-GMO by their makers.

Popular picks

How to add fiber

Increase fiber gradually over a couple of weeks and drink plenty of water, especially with psyllium. Stir powders into smoothies, yogurt or oatmeal, and use granolas and bars as snacks.

If you have a digestive condition or take medication, check with a clinician first. Psyllium can affect how some medicines are absorbed, so take it separately from them.

Frequently asked questions

What is fibermaxxing?

A social-media term for deliberately increasing daily fiber toward or above the recommended amount.

How much fiber should I eat?

US guidelines suggest about 14 g per 1,000 calories, roughly 25–34 g a day for most adults.

What is resistant starch?

Starch that resists digestion in the small intestine and behaves like fiber. It's found in green bananas, raw potato starch, and cooked potatoes or rice that have been cooled.

Can too much fiber cause problems?

Adding a lot quickly can cause bloating and gas. Increase it gradually and drink plenty of fluids.

More guides

This information is general and isn't medical advice.

Buying guides

All guides