Cetirizine vs Memantine

## Cetirizine vs Memantine: Overview

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

## Mechanism of Action

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

**Memantine**: Non-competitive NMDA receptor antagonist.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Memantine — 60-80 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Memantine — C12H21N.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Memantine — 179.3080 g/mol.

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