Doxycycline vs Phenytoin

## Doxycycline vs Phenytoin: Overview

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

## Mechanism of Action

**Doxycycline**: Inhibits bacterial protein synthesis by binding 30S ribosomal subunit.

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

## Pharmacokinetics

**Half-life**: Doxycycline — 18-22 hours; Phenytoin — 22 hours.

## Chemical Properties

**Molecular Formula**: Doxycycline — C22H24N2O8; Phenytoin — C15H12N2O2.

**Molecular Weight**: Doxycycline — 444.4350 g/mol; Phenytoin — 252.2680 g/mol.

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