Cetirizine vs Ranitidine

Cetirizine vs Ranitidine: Overview

This comparison examines the pharmacological differences between Cetirizine and Ranitidine.

Mechanism of Action

Cetirizine: Second-generation H1 antihistamine.

Ranitidine: Competitive H2 receptor antagonist.

Pharmacokinetics

Half-life: Cetirizine — 6.5-10 hours; Ranitidine — 2-3 hours.

Chemical Properties

Molecular Formula: Cetirizine — C21H25ClN2O3; Ranitidine — C13H22N4O3S.

Molecular Weight: Cetirizine — 388.8900 g/mol; Ranitidine — 314.4050 g/mol.

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