Sildenafil vs Zolpidem

## Sildenafil vs Zolpidem: Overview

This comparison examines the pharmacological differences between **Sildenafil** and **Zolpidem**.

## Mechanism of Action

**Sildenafil**: Selective PDE5 inhibitor increasing cGMP.

**Zolpidem**: Selective GABA-A receptor alpha-1 subunit agonist.

## Pharmacokinetics

**Half-life**: Sildenafil — 4 hours; Zolpidem — 2.5 hours.

## Chemical Properties

**Molecular Formula**: Sildenafil — C22H30N6O4S; Zolpidem — C19H21N3O.

**Molecular Weight**: Sildenafil — 474.5800 g/mol; Zolpidem — 307.3950 g/mol.

**Type**: Sildenafil — Small molecule; Zolpidem — Small molecule.