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gut theory.

Our standards

Built on a clearer standard.

Our standard: Every Layer, Addressed.™

Knowing what you take should feel simple. See the ingredients, their exact amounts and the evidence behind the decisions.

A navy Gut Theory scoop filled with yellow powder

What our standard means

Clear enough to check.

Four details you can check for yourself: named ingredients, exact amounts, enzyme activity and linked research.

01

6 g. Two named fibres.

3 g acacia gum (FiberGum B) and 3 g PHGG (Fibalance) in each daily serve. Both listed separately.

Check the formula →
02

Three strains. Three amounts.

BC30: 5 billion CFU. CNCM I-745: 3 billion. DE111: 2 billion. See exactly how the 10 billion total is made up.

See each strain →
03

Enzyme activity disclosed.

Amylase 8,000 DU. Protease 35,000 HUT. Lipase 750 FIP. Cellulase 500 CU. Lactase 1,500 ALU. Each enzyme’s activity is listed.

Check enzyme units →
04

Studies you can open.

Our library links the original papers and shows when the amount, ingredient source or people studied differ from our formula.

Read the study context →
Nazan Arabul, founder of Gut Theory and psychologist

The person behind the standard

Built with psychology. Shaped for real life.

A simple habit starts with a specific brief.

Nazan’s psychology background shaped how the product would fit into a normal day. Nutritionists and food scientists helped develop the formula over two years.

The brief was practical: one daily serve, a citrus berry taste and clearly disclosed ingredients. The five-layer system makes that formula easier to read.

Her professional background explains the focus on habits. It is not a clinical endorsement of the formula, and AHPRA registration does not mean AHPRA approves this product.

You should be able to care for your gut and still enjoy bakeries, lunches out, travel and the foods you love.

Registration: PSY0002465046 · Check the AHPRA register ↗

Nazan Arabul · Founder
Registered psychologist, AHPRA

What we stand for

01

Know your scoop.

Named ingredients. Clear amounts. Original research you can open. The details are yours to explore.

02

Keep it simple.

One daily serve, a bright citrus berry taste and five defined roles. Daily gut care that fits your day.

03

Keep the joy.

Café breakfasts. Lunches out. A week away. We believe caring for your gut should fit the life you enjoy.