Yes, I did not focus on the medications in my reply but that is very true. Antibiotics were not the culprit for me. Tinnitus is also genetic and my father had tinnitus and the same pattern of hearing loss that I have. And then there is the noise factor because we live in a noisy world. Oy - don't get me started on noise (I'm the baby boomer generation and how many rock concerts did I go to and stand right in front of the speakers?). Many antibiotics, in particular, affect the cells in the inner ear (cochlea for hearing and semicircular canals for vestibular process). There are known side effects which are usually indicated in packaging information, and with some of these medications the tinnitus is permanent. (Full disclosure here: I trained as a speech-language pathologist and hearing is part of our training). But other medications besides antibiotics can cause tinnitus that is reversible when you stop the medication. It just depends on what a person is taking. Like you, nurseheadakes, a pharmacist is a good resource for this information if your physician doesn't have the answers you want.