Montelukast vs Trimethoprim

## Montelukast vs Trimethoprim: Overview

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

## Mechanism of Action

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

**Trimethoprim**: Dihydrofolate reductase inhibitor (bacterial selective).

## Pharmacokinetics

**Half-life**: Montelukast — 2.7-5.5 hours; Trimethoprim — 8-10 hours.

## Chemical Properties

**Molecular Formula**: Montelukast — C35H36ClNO3S; Trimethoprim — C14H18N4O3.

**Molecular Weight**: Montelukast — 586.1800 g/mol; Trimethoprim — 290.3180 g/mol.

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