Metformin vs Varenicline

## Metformin vs Varenicline: Overview

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

## Mechanism of Action

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

## Pharmacokinetics

**Half-life**: Metformin — 4-9 hours; Varenicline — N/A.

## Chemical Properties

**Molecular Formula**: Metformin — C4H11N5; Varenicline — N/A.

**Molecular Weight**: Metformin — 129.1640 g/mol; Varenicline — N/A.

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