Sildenafil vs Simvastatin

## Sildenafil vs Simvastatin: Overview

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

## Mechanism of Action

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

**Simvastatin**: Prodrug converted to active form that inhibits HMG-CoA reductase.

## Pharmacokinetics

**Half-life**: Sildenafil — 4 hours; Simvastatin — 2 hours.

## Chemical Properties

**Molecular Formula**: Sildenafil — C22H30N6O4S; Simvastatin — C25H38O5.

**Molecular Weight**: Sildenafil — 474.5800 g/mol; Simvastatin — 418.5700 g/mol.

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