Finasteride vs Sildenafil

## Finasteride vs Sildenafil: Overview

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

## Mechanism of Action

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

**Sildenafil**: Selective PDE5 inhibitor increasing cGMP.

## Pharmacokinetics

**Half-life**: Finasteride — 5-6 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Finasteride — C23H36N2O2; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Finasteride — 372.5490 g/mol; Sildenafil — 474.5800 g/mol.

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