Hi Rena,
I know this thread may be a little old, but wanted to post the information I found on Hydroxyzine. Unfortunately, listed right in the description of side effects, tinnitus is called out and the drug is considered potentially ototoxic as a result. It does mention that it is a more rare side effect, however, considering that we are all here because we already have it, I would stay away from it.
I have been trying melatonin for sleep the last couple of days, playing with dosage between 3mg and 10mg to find effectiveness and consistency without a morning fog. As another potential benefit, melatonin has been known to sometimes reduce the severity of tinnitus flair ups for those without the noise induced variety.
Good luck!