Doxycycline vs Metronidazole

## Doxycycline vs Metronidazole: Overview

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

## Mechanism of Action

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

**Metronidazole**: Forms cytotoxic free radicals that damage bacterial DNA.

## Pharmacokinetics

**Half-life**: Doxycycline — 18-22 hours; Metronidazole — 8 hours.

## Chemical Properties

**Molecular Formula**: Doxycycline — C22H24N2O8; Metronidazole — C6H9N3O3.

**Molecular Weight**: Doxycycline — 444.4350 g/mol; Metronidazole — 171.1540 g/mol.

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