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.