Cetirizine vs Doxycycline

Cetirizine vs Doxycycline: Overview

This comparison examines the pharmacological differences between Cetirizine and Doxycycline.

Mechanism of Action

Cetirizine: Second-generation H1 antihistamine.

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

Pharmacokinetics

Half-life: Cetirizine — 6.5-10 hours; Doxycycline — 18-22 hours.

Chemical Properties

Molecular Formula: Cetirizine — C21H25ClN2O3; Doxycycline — C22H24N2O8.

Molecular Weight: Cetirizine — 388.8900 g/mol; Doxycycline — 444.4350 g/mol.

Type: Cetirizine — Small molecule; Doxycycline — Small molecule.