The study will be conducted as a Phase 1, open-label, single dose, randomized, 4-period, cross over design in a single cohort of approximately 12 healthy male or female participants at a single center. Participants will be randomized into 1 of 4 sequences of treatment.

INCLUSION CRITERIA:

• Participants who are healthy as determined by medical evaluation including a detailed medical history, complete physical examination, which includes BP and pulse rate measurement, clinical laboratory tests, and 12 lead ECG.
• Participants with body mass index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lb).

EXCLUSION CRITERIA

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurological, dermatological, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing).
• Any condition possibly affecting drug absorption (eg, gastrectomy, cholecystectomy).
• Known immunodeficiency disorder, including positive serology for human immunodeficiency virus (HIV) at screening, or a first degree relative with a hereditary immunodeficiency.
• Infection with hepatitis B or hepatitis C viruses

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.