Tacrolimus vs Upadacitinib

## Tacrolimus vs Upadacitinib: Overview

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

## Mechanism of Action

**Tacrolimus**: Calcineurin inhibitor binding FKBP12; suppresses IL-2 transcription.

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

## Pharmacokinetics

**Half-life**: Tacrolimus — 12 hours; Upadacitinib — 9-14 hours.

## Chemical Properties

**Molecular Formula**: Tacrolimus — C44H69NO12; Upadacitinib — C17H19F3N6O.

**Molecular Weight**: Tacrolimus — 804.0180 g/mol; Upadacitinib — 380.3700 g/mol.

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