Gefitinib vs Phenytoin

## Gefitinib vs Phenytoin: Overview

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

## Mechanism of Action

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

**Phenytoin**: Sodium channel blocker stabilizing inactive state.

## Pharmacokinetics

**Half-life**: Gefitinib — 48 hours; Phenytoin — 22 hours.

## Chemical Properties

**Molecular Formula**: Gefitinib — C22H24ClFN4O3; Phenytoin — C15H12N2O2.

**Molecular Weight**: Gefitinib — 446.9000 g/mol; Phenytoin — 252.2680 g/mol.

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