Acyclovir vs Afatinib

## Acyclovir vs Afatinib: Overview

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

## Mechanism of Action

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

**Afatinib**: Irreversible covalent inhibitor of ErbB family (EGFR/HER1, HER2, HER4) tyrosine kinases.

## Pharmacokinetics

**Half-life**: Acyclovir — 2.5-3.3 hours; Afatinib — 37 hours.

## Chemical Properties

**Molecular Formula**: Acyclovir — C8H11N5O3; Afatinib — C24H25ClFN5O3.

**Molecular Weight**: Acyclovir — 225.2050 g/mol; Afatinib — 485.9400 g/mol.

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