Donepezil vs Gefitinib

## Donepezil vs Gefitinib: Overview

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

## Mechanism of Action

**Donepezil**: Reversible acetylcholinesterase inhibitor.

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

## Pharmacokinetics

**Half-life**: Donepezil — 70 hours; Gefitinib — 48 hours.

## Chemical Properties

**Molecular Formula**: Donepezil — C24H29NO3; Gefitinib — C22H24ClFN4O3.

**Molecular Weight**: Donepezil — 379.4920 g/mol; Gefitinib — 446.9000 g/mol.

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