Esomeprazole vs Tofacitinib

## Esomeprazole vs Tofacitinib: Overview

This comparison examines the pharmacological differences between **Esomeprazole** and **Tofacitinib**.

## Mechanism of Action

**Esomeprazole**: S-isomer of omeprazole; proton pump inhibitor irreversibly blocking gastric H+/K+-ATPase.

**Tofacitinib**: Pan-JAK inhibitor with preference for JAK1 and JAK3 blocking pro-inflammatory cytokine signaling.

## Pharmacokinetics

**Half-life**: Esomeprazole — 1-1.5 hours; Tofacitinib — 3.2 hours.

## Chemical Properties

**Molecular Formula**: Esomeprazole — C17H19N3O3S; Tofacitinib — C16H20N6O.

**Molecular Weight**: Esomeprazole — 345.4170 g/mol; Tofacitinib — 312.3700 g/mol.

**Type**: Esomeprazole — Small molecule; Tofacitinib — Small molecule.