http://www.bixby.org/faq/tinnitus/prevent.html#drugs 
If it aint one thing it's another! Tinnitus. Joining the dots - Sulfasalazine! Yes.
The blasted culprit. Anyone else have tinnitus as a side effect of their taking our wee friend SSZ? Have been coping with this ever since taking the darn stuff, and only took it for 5 weeks, as I threw such wobblies - think I expressed most of the listed side effcts, and now this one, which won't go away!
Whistling, zizzing, fizzing, badly tuned radio, feintly heard music (!), bells - oh the bells!! Have labelled it a new piece in honour of the League of Nations...as the cacaphony is worthy of Hoffnung - LARGE SIGH!! Go to bed with it, wake up with it - never ending background noise. AND, there's NO cure...