Morphine vs Sildenafil

## Morphine vs Sildenafil: Overview

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

## Mechanism of Action

**Morphine**: Mu-opioid receptor agonist.

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

## Pharmacokinetics

**Half-life**: Morphine — 2-3 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Morphine — C17H19NO3; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Morphine — 285.3380 g/mol; Sildenafil — 474.5800 g/mol.

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