- Medication use: Given the widespread use of medications, it may not be practical to instruct subjects to avoid all medication prior to and during the study. Thus, participant exclusion will be based on use of medications within 48 hours of the exposure and for the 6 days following the exposure that affect glucuronidation of the d-BPA dosage: Salicylic acid, acetaminophen, ibuprofen, naproxen, mefenamic acid, diclofenac, gliclazide carbamazepine, valproic acid, cimetidine, sulfasalazine, amoxicillin and erythromycin.