28. Takes any concomitant medication, either prescribed or over-the-counter. This includes use of any prescription or non-prescription medication, including vitamins or herbal medications, within 7 days or 5 half-lives (if known), whichever is longer, prior to dosing and within 24 hours after dosing, excluding hormonal contraceptives. The use of acetaminophen, naproxen, and ibuprofen is permitted except for within 24 hours prior to dosing.