Acyclovir vs Fentanyl

## Acyclovir vs Fentanyl: Overview

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

## Mechanism of Action

**Acyclovir**: Guanosine analogue inhibiting viral DNA polymerase.

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

## Pharmacokinetics

**Half-life**: Acyclovir — 2.5-3.3 hours; Fentanyl — 2-4 hours.

## Chemical Properties

**Molecular Formula**: Acyclovir — C8H11N5O3; Fentanyl — C22H28N2O.

**Molecular Weight**: Acyclovir — 225.2050 g/mol; Fentanyl — 336.4700 g/mol.

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