Cetirizine vs Lamotrigine

## Cetirizine vs Lamotrigine: Overview

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

## Mechanism of Action

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

**Lamotrigine**: Sodium channel blocker inhibiting glutamate release.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Lamotrigine — 25 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Lamotrigine — C9H7Cl2N5.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Lamotrigine — 256.0910 g/mol.

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