Phenytoin vs Ranitidine

## Phenytoin vs Ranitidine: Overview

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

## Mechanism of Action

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

**Ranitidine**: Competitive H2 receptor antagonist.

## Pharmacokinetics

**Half-life**: Phenytoin — 22 hours; Ranitidine — 2-3 hours.

## Chemical Properties

**Molecular Formula**: Phenytoin — C15H12N2O2; Ranitidine — C13H22N4O3S.

**Molecular Weight**: Phenytoin — 252.2680 g/mol; Ranitidine — 314.4050 g/mol.

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