Cetirizine vs Trimethoprim

Cetirizine vs Trimethoprim: Overview

This comparison examines the pharmacological differences between Cetirizine and Trimethoprim.

Mechanism of Action

Cetirizine: Second-generation H1 antihistamine.

Trimethoprim: Dihydrofolate reductase inhibitor (bacterial selective).

Pharmacokinetics

Half-life: Cetirizine — 6.5-10 hours; Trimethoprim — 8-10 hours.

Chemical Properties

Molecular Formula: Cetirizine — C21H25ClN2O3; Trimethoprim — C14H18N4O3.

Molecular Weight: Cetirizine — 388.8900 g/mol; Trimethoprim — 290.3180 g/mol.

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