Human C1-Esterase Inhibitor vs Sildenafil

## Human C1-Esterase Inhibitor vs Sildenafil: Overview

This comparison examines the pharmacological differences between **Human C1-Esterase Inhibitor** and **Sildenafil**.

## Mechanism of Action

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

## Pharmacokinetics

**Half-life**: Human C1-Esterase Inhibitor — N/A; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Human C1-Esterase Inhibitor — N/A; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Human C1-Esterase Inhibitor — N/A; Sildenafil — 474.5800 g/mol.

**Type**: Human C1-Esterase Inhibitor — Protein; Sildenafil — Small molecule.