Sildenafil vs Trastuzumab

## Sildenafil vs Trastuzumab: Overview

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

## Mechanism of Action

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

**Trastuzumab**: Anti-HER2 monoclonal antibody inhibiting receptor signaling.

## Pharmacokinetics

**Half-life**: Sildenafil — 4 hours; Trastuzumab — 28 days.

## Chemical Properties

**Molecular Formula**: Sildenafil — C22H30N6O4S; Trastuzumab — N/A.

**Molecular Weight**: Sildenafil — 474.5800 g/mol; Trastuzumab — N/A.

**Type**: Sildenafil — Small molecule; Trastuzumab — Antibody.