The overall aim of the study is to establish bioequivalence between commercial tofacitinib tablet formulations with the tofacitinib capsule formulation.

Inclusion Criteria:

• Healthy male and/or female (non-childbearing potential) subjects between the ages of 21 and 55 years, inclusive. Healthy is defined as no clinically relevant abnormalities identified by a detailed medical history, full physical examination, including oral temperature, BP and PR measurement, 12 Lead ECG and clinical laboratory tests.

Exclusion Criteria:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease.