Acetaminophen vs Captopril

## Acetaminophen vs Captopril: Overview

This comparison examines the pharmacological differences between **Acetaminophen** and **Captopril**.

## Mechanism of Action

**Acetaminophen**: Inhibits prostaglandin synthesis in the CNS and peripherally blocks pain impulse generation.

**Captopril**: First orally active ACE inhibitor; contains thiol group that binds zinc at ACE active site.

## Pharmacokinetics

**Half-life**: Acetaminophen — 1-4 hours; Captopril — 1.9 hours.

## Chemical Properties

**Molecular Formula**: Acetaminophen — C8H9NO2; Captopril — C9H15NO3S.

**Molecular Weight**: Acetaminophen — 151.1630 g/mol; Captopril — 217.2850 g/mol.

**Type**: Acetaminophen — Small molecule; Captopril — Small molecule.