Digestive Detail
Digestive Guide

Prebiotics vs Probiotics

Understand the difference between substrates used by microorganisms and live microorganisms supplied in probiotic products.

Editorially reviewed • Updated September 8, 2026

Different concepts

Prebiotics and probiotics are related to the microbiome but are not synonyms. Products can also combine them.

Label details matter

A useful comparison asks what ingredient or organism is present, how much, and whether the evidence matches the intended use.

Health note: This page is educational and is not a diagnosis or treatment recommendation. Supplements can cause side effects and interact with medicines. Discuss personal decisions with a qualified healthcare professional.