Propranolol vs Sildenafil

## Propranolol vs Sildenafil: Overview

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

## Mechanism of Action

**Propranolol**: Non-selective beta-adrenergic receptor blocker.

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

## Pharmacokinetics

**Half-life**: Propranolol — 3-6 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Propranolol — C16H21NO2; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Propranolol — 259.3440 g/mol; Sildenafil — 474.5800 g/mol.

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