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.