---
title: "Metformin diarrhea: causes, fixes, when to call"
description: "Metformin diarrhea is common, especially when starting or increasing dose. See why it happens, what can help, and when to call a, with clinician guidance."
canonical: "https://www.vitalsvault.com/treatment-learn/does-metformin-cause-diarrhea"
last-updated: 2026-08-22
---

# Metformin diarrhea: causes, fixes, when to call

> Metformin diarrhea is common, especially when starting or increasing dose. See why it happens, what can help, and when to call a, with clinician guidance.

---

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