Tofacitinib Bioequivalence Study Comparing Tablets And Capsules

• Drug: tofacitinib 10 mg
  
  Cohort 1 will consist of 2 periods and 2 sequences. Subjects will be randomized to one of the 2 sequences. In sequence 1, subjects will receive a 10 mg tofacitnib tablet under fasting conditions in period 1, followed by a 10 mg tofacitinib capsule in fasting conditions in period 2. In sequence 2, the treatments will be reversed for period 1 and 2.
• Drug: tofacitinib 5 mg
  
  Cohort 2 will consist of 2 periods and 2 sequences. A total of 24 healthy subjects will be enrolled for this cohort. Subjects will be randomized to one of the 2 sequences. In sequence 1, subjects will receive a 5 mg tablet under fasting conditions in period 1, followed by a 5 mg capsule in fasting conditions in period 2. In sequence 2, the treatments will be reversed for period 1 and 2.

• Experimental: Cohort 1
  
  Intervention: Drug: tofacitinib 10 mg
• Experimental: Cohort 2
  
  Intervention: Drug: tofacitinib 5 mg

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.