All subjects in this study will be given tafamidis. After swallowing a single pill of tafamidis, measurements including blood samples will be compared to see if tafamidis made in different ways is about the same. After approximately 28 days subjects will be given another pill of tafamidis and the study measurements will be repeated.

Inclusion Criteria:

• Healthy males or females of non-child bearing potential.
• Body Mass Index (BMI) of 17.5 to 30.5 and total body weight more than 50 kg (110 lbs).

Exclusion Criteria:

• Blood pressure at screening visit of greater than 140 mm Hg (systolic) or 90 mg Hg (diastolic).
• Use of prescription or nonprescription drugs supplements within 7 days prior to 7 days of the study.