Ciprofloxacin vs Doxycycline

## Ciprofloxacin vs Doxycycline: Overview

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

## Mechanism of Action

**Ciprofloxacin**: Inhibits bacterial DNA gyrase and topoisomerase IV.

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

## Pharmacokinetics

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

## Chemical Properties

**Molecular Formula**: Ciprofloxacin — C17H18FN3O3; Doxycycline — C22H24N2O8.

**Molecular Weight**: Ciprofloxacin — 331.3460 g/mol; Doxycycline — 444.4350 g/mol.

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