Cetirizine vs Hydroxychloroquine

## Cetirizine vs Hydroxychloroquine: Overview

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

## Mechanism of Action

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

**Hydroxychloroquine**: Accumulates in lysosomes raising pH; inhibits toll-like receptor signaling.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Hydroxychloroquine — 40-50 days.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Hydroxychloroquine — C18H26ClN3O.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Hydroxychloroquine — 335.8720 g/mol.

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