Acetaminophen vs Phenytoin

## Acetaminophen vs Phenytoin: Overview

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

## Mechanism of Action

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

**Phenytoin**: Sodium channel blocker stabilizing inactive state.

## Pharmacokinetics

**Half-life**: Acetaminophen — 1-4 hours; Phenytoin — 22 hours.

## Chemical Properties

**Molecular Formula**: Acetaminophen — C8H9NO2; Phenytoin — C15H12N2O2.

**Molecular Weight**: Acetaminophen — 151.1630 g/mol; Phenytoin — 252.2680 g/mol.

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