There are potential effects on the kidney but they are dose, age(which coincides with kidney function) and hydration dependent. If you are taking advil strictly for workout recovery and not taking it consistently, you should have no problems. Heck, even people taking it consistently rarely have problems but if you would like to be on the safe side and i would, limit your usage. Also remember to take with food as there is potential to worsen/initiate ulcers.

As far as the potential hearing problems, this is true of all NSAID's including aspirin. There is a possibility of developing tinnitus--a ringing in the ears. Usually subsides after discontinuing the med.

All of these effects sound horrible and they are all potential side effects of a medication as simple as ibuprofen(advil). However, most of these effects are from long term use and high dosages or in patients with pre-existing conditions.