Montelukast vs Sildenafil

## Montelukast vs Sildenafil: Overview

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

## Mechanism of Action

**Montelukast**: Selective leukotriene D4 receptor antagonist.

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

## Pharmacokinetics

**Half-life**: Montelukast — 2.7-5.5 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Montelukast — C35H36ClNO3S; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Montelukast — 586.1800 g/mol; Sildenafil — 474.5800 g/mol.

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