---
title: "Metformin dosage: IR vs ER dosing chart guide"
description: "Metformin dosage depends on IR vs ER form, kidney function, and tolerance. See FDA label starting doses, titration steps, missed-dose guidance, and max."
canonical: "https://www.vitalsvault.com/treatment-learn/metformin-dosage"
last-updated: 2026-08-22
---

# Metformin dosage: IR vs ER dosing chart guide

> Metformin dosage depends on IR vs ER form, kidney function, and tolerance. See FDA label starting doses, titration steps, missed-dose guidance, and max.

---

Canonical HTML: https://www.vitalsvault.com/treatment-learn/metformin-dosage
- [llms.txt](https://www.vitalsvault.com/llms.txt)
- [sitemap.xml](https://www.vitalsvault.com/sitemap.xml)
- [Developer portal](https://www.vitalsvault.com/developers)