Citalopram vs Levothyroxine

## Citalopram vs Levothyroxine: Overview

This comparison examines the pharmacological differences between **Citalopram** and **Levothyroxine**.

## Mechanism of Action

**Citalopram**: Selective serotonin reuptake inhibitor (SSRI); racemic mixture with escitalopram as active S-enantiomer.

**Levothyroxine**: Synthetic thyroid hormone T4 replacement.

## Pharmacokinetics

**Half-life**: Citalopram — 35 hours; Levothyroxine — 6-7 days.

## Chemical Properties

**Molecular Formula**: Citalopram — C20H21FN2O; Levothyroxine — C15H11I4NO4.

**Molecular Weight**: Citalopram — 324.3920 g/mol; Levothyroxine — 776.8700 g/mol.

**Type**: Citalopram — Small molecule; Levothyroxine — Small molecule.