Doxycycline vs Fentanyl

## Doxycycline vs Fentanyl: Overview

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

## Mechanism of Action

**Doxycycline**: Inhibits bacterial protein synthesis by binding 30S ribosomal subunit.

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

## Pharmacokinetics

**Half-life**: Doxycycline — 18-22 hours; Fentanyl — 2-4 hours.

## Chemical Properties

**Molecular Formula**: Doxycycline — C22H24N2O8; Fentanyl — C22H28N2O.

**Molecular Weight**: Doxycycline — 444.4350 g/mol; Fentanyl — 336.4700 g/mol.

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