Arrowroot Powder

Also known as: Maranta arundinacea, arrowroot starch, arrowroot flour

Evidence under review. — Not yet rated

Starchy root powder used traditionally to soothe digestion. Very little clinical research available.

What it does

Arrowroot powder is a fine, white starch extracted from the tropical plant Maranta arundinacea. It has been used for centuries in traditional medicine as a gentle food for upset stomachs,...
Evidence quality

Evidence base hasn't been formally rated yet. See research below.
Clinical dose

No established dose

What the Science Says

Arrowroot powder is a fine, white starch extracted from the tropical plant Maranta arundinacea. It has been used for centuries in traditional medicine as a gentle food for upset stomachs, diarrhea, and digestive discomfort. It is largely a bland, easily digestible carbohydrate source, and any digestive benefits are based primarily on traditional use and very limited clinical evidence.

What It Doesn't Do

Not proven to treat any medical condition. No solid clinical evidence it cures diarrhea faster than other bland foods. Not a meaningful source of vitamins or minerals. Won't help you lose weight despite appearing in some 'clean eating' products. Not a probiotic or prebiotic in any clinically meaningful sense.

Evidence-Based Benefits

Traditionally used to ease mild digestive upset and diarrhea due to its bland, easily digestible starch content.

Weak Evidence

Effective at: No established dose

Functions as a gluten-free thickening agent in food, making it useful for people avoiding wheat starch.

Weak Evidence

Effective at: No established dose

Absorption & Bioavailability

Good — as a simple starch it is readily digested and absorbed, but this also means it offers little fiber benefit compared to whole-food starches.

Red Flags to Watch For

Virtually no clinical trials exist to support specific health claims — most evidence is traditional or anecdotal
Often marketed as a 'superfood' or digestive cure-all without meaningful scientific backing
High in simple starch — people managing blood sugar should be cautious about large amounts
Products may blend arrowroot with other ingredients, making it hard to attribute any effect to arrowroot specifically

Frequently Asked Questions

What does Arrowroot Powder do?

Starchy root powder used traditionally to soothe digestion. Very little clinical research available.

What is the effective dose of Arrowroot Powder?

No established dose

Is Arrowroot Powder safe?

Virtually no clinical trials exist to support specific health claims — most evidence is traditional or anecdotal

What doesn't Arrowroot Powder do?

Not proven to treat any medical condition.

Research Sources

General knowledge — Limited published research available

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25