Doxycycline vs Norfloxacin

## Doxycycline vs Norfloxacin: Overview

This comparison examines the pharmacological differences between **Doxycycline** and **Norfloxacin**.

## Mechanism of Action

**Doxycycline**: Inhibits bacterial protein synthesis by binding 30S ribosomal subunit.

**Norfloxacin**: Second-generation fluoroquinolone inhibiting bacterial DNA gyrase and topoisomerase IV.

## Pharmacokinetics

**Half-life**: Doxycycline — 18-22 hours; Norfloxacin — 3-4 hours.

## Chemical Properties

**Molecular Formula**: Doxycycline — C22H24N2O8; Norfloxacin — C16H18FN3O3.

**Molecular Weight**: Doxycycline — 444.4350 g/mol; Norfloxacin — 319.3310 g/mol.

**Type**: Doxycycline — Small molecule; Norfloxacin — Small molecule.