Levothyroxine vs Metformin

## Levothyroxine vs Metformin: Overview

This comparison examines the pharmacological differences between **Levothyroxine** and **Metformin**.

## Mechanism of Action

**Levothyroxine**: Synthetic thyroid hormone T4 replacement.

**Metformin**: Activates AMP-activated protein kinase, decreasing hepatic glucose production.

## Pharmacokinetics

**Half-life**: Levothyroxine — 6-7 days; Metformin — 4-9 hours.

## Chemical Properties

**Molecular Formula**: Levothyroxine — C15H11I4NO4; Metformin — C4H11N5.

**Molecular Weight**: Levothyroxine — 776.8700 g/mol; Metformin — 129.1640 g/mol.

**Type**: Levothyroxine — Small molecule; Metformin — Small molecule.