9. Use of prescription or nonprescription drugs and dietary supplements within 7 days or 5 half-lives (whichever is longer) prior to study drug dose. Acetaminophen may be used at dosed up to 1 g/day. Limited use of nonRx medications may be permitted following approval by the sponsor. Herbal supplements and hormone replacement therapy must have been discontinued at least 28 days prior to study drug dose.