Doxycycline vs Promethazine

## Doxycycline vs Promethazine: Overview

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

## Mechanism of Action

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

## Pharmacokinetics

**Half-life**: Doxycycline — 18-22 hours; Promethazine — N/A.

## Chemical Properties

**Molecular Formula**: Doxycycline — C22H24N2O8; Promethazine — N/A.

**Molecular Weight**: Doxycycline — 444.4350 g/mol; Promethazine — N/A.

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