Cephalexin vs Levofloxacin

## Cephalexin vs Levofloxacin: Overview

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

## Mechanism of Action

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

**Levofloxacin**: Fluoroquinolone antibiotic inhibiting bacterial DNA gyrase and topoisomerase IV.

## Pharmacokinetics

**Half-life**: Cephalexin — 0.5-1.2 hours; Levofloxacin — 6-8 hours.

## Chemical Properties

**Molecular Formula**: Cephalexin — C16H17N3O4S; Levofloxacin — C18H20FN3O4.

**Molecular Weight**: Cephalexin — 347.3890 g/mol; Levofloxacin — 361.3680 g/mol.

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