Tamoxifen vs Upadacitinib

## Tamoxifen vs Upadacitinib: Overview

This comparison examines the pharmacological differences between **Tamoxifen** and **Upadacitinib**.

## Mechanism of Action

**Tamoxifen**: Selective estrogen receptor modulator (SERM).

**Upadacitinib**: Selective JAK1 inhibitor reducing signaling from cytokines implicated in autoimmune diseases.

## Pharmacokinetics

**Half-life**: Tamoxifen — 5-7 days; Upadacitinib — 9-14 hours.

## Chemical Properties

**Molecular Formula**: Tamoxifen — C26H29NO; Upadacitinib — C17H19F3N6O.

**Molecular Weight**: Tamoxifen — 371.5150 g/mol; Upadacitinib — 380.3700 g/mol.

**Type**: Tamoxifen — Small molecule; Upadacitinib — Small molecule.