Fentanyl vs Trimethoprim

## Fentanyl vs Trimethoprim: Overview

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

## Mechanism of Action

**Fentanyl**: Highly potent synthetic mu-opioid receptor agonist approximately 100 times more potent than morphine.

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

## Pharmacokinetics

**Half-life**: Fentanyl — 2-4 hours; Trimethoprim — 8-10 hours.

## Chemical Properties

**Molecular Formula**: Fentanyl — C22H28N2O; Trimethoprim — C14H18N4O3.

**Molecular Weight**: Fentanyl — 336.4700 g/mol; Trimethoprim — 290.3180 g/mol.

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