- Current use of prescription or chronic (more than 3 continuous weeks) use of over-the-counter medications for pain, fever or other inflammation including prednisolone (Orapred), aspirin (Ecotrin), ibuprofen (Advil), and acetaminophen (Tylenol). The medications will be reviewed to see if subject can be in the study. If the subject is taking any medication that is not permitted, he/she may be in the study if the medication can be safely stopped for three weeks. The subject s primary care doctor will be contacted to stop a medication if necessary. A written permission will be obtained from the subject to contact his/her doctor.