Acyclovir vs Gefitinib

## Acyclovir vs Gefitinib: Overview

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

## Mechanism of Action

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

**Gefitinib**: Selective reversible inhibitor of EGFR tyrosine kinase.

## Pharmacokinetics

**Half-life**: Acyclovir — 2.5-3.3 hours; Gefitinib — 48 hours.

## Chemical Properties

**Molecular Formula**: Acyclovir — C8H11N5O3; Gefitinib — C22H24ClFN4O3.

**Molecular Weight**: Acyclovir — 225.2050 g/mol; Gefitinib — 446.9000 g/mol.

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