Phenytoin vs Spironolactone

## Phenytoin vs Spironolactone: Overview

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

## Mechanism of Action

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

**Spironolactone**: Mineralocorticoid receptor antagonist.

## Pharmacokinetics

**Half-life**: Phenytoin — 22 hours; Spironolactone — 1.4 hours.

## Chemical Properties

**Molecular Formula**: Phenytoin — C15H12N2O2; Spironolactone — C24H32O4S.

**Molecular Weight**: Phenytoin — 252.2680 g/mol; Spironolactone — 416.5740 g/mol.

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