Cetirizine vs Finasteride

## Cetirizine vs Finasteride: Overview

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

## Mechanism of Action

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

**Finasteride**: Competitive inhibitor of 5-alpha-reductase type II.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Finasteride — 5-6 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Finasteride — C23H36N2O2.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Finasteride — 372.5490 g/mol.

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