Acyclovir vs Sildenafil

## Acyclovir vs Sildenafil: Overview

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

## Mechanism of Action

**Acyclovir**: Guanosine analogue inhibiting viral DNA polymerase.

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

## Pharmacokinetics

**Half-life**: Acyclovir — 2.5-3.3 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Acyclovir — C8H11N5O3; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Acyclovir — 225.2050 g/mol; Sildenafil — 474.5800 g/mol.

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