Cephalexin vs Gefitinib

## Cephalexin vs Gefitinib: Overview

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

## Mechanism of Action

**Cephalexin**: First-generation cephalosporin inhibiting cell wall synthesis.

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

## Pharmacokinetics

**Half-life**: Cephalexin — 0.5-1.2 hours; Gefitinib — 48 hours.

## Chemical Properties

**Molecular Formula**: Cephalexin — C16H17N3O4S; Gefitinib — C22H24ClFN4O3.

**Molecular Weight**: Cephalexin — 347.3890 g/mol; Gefitinib — 446.9000 g/mol.

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