What the heck kind of medication attacks your hearing/ears?

My Mother had rheumatic fever as a child and it impacted her hearing. She finally broke down and got the "near invisible" in the ear ones and has overcome the awkward feeling that her ears are stopped up. Hers adjust automatically for volume and even have some sort of noise cancellation for things like wind. She went this route due to vanity, but I think she is real happy with the overall results.