Cetirizine vs Oseltamivir

## Cetirizine vs Oseltamivir: Overview

This comparison examines the pharmacological differences between **Cetirizine** and **Oseltamivir**.

## Mechanism of Action

**Cetirizine**: Second-generation H1 antihistamine.

**Oseltamivir**: Neuraminidase inhibitor preventing viral release from host cells.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Oseltamivir — 6-10 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Oseltamivir — C16H28N2O4.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Oseltamivir — 312.4050 g/mol.

**Type**: Cetirizine — Small molecule; Oseltamivir — Small molecule.