Ipilimumab vs Sildenafil

## Ipilimumab vs Sildenafil: Overview

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

## Mechanism of Action

**Ipilimumab**: Fully human anti-CTLA-4 IgG1 monoclonal antibody that blocks CTLA-4 inhibitory signaling.

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

## Pharmacokinetics

**Half-life**: Ipilimumab — 14.7 days; Sildenafil — 4 hours.

## Chemical Properties

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

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

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