I took Fosamax for 4 weeks and have been off for 6 weeks -- thanks to great sites like these because the doctors. look at you like you are crazy when you say it is causing weird things to happen. In the third week of taking it, I developed a neck crunching/crackling noise with tinnitus -- besides many many other things. I am glad to say most disappeared soon after stopping the poison, but the neck and tinnitus have continued. Also, three weeks after stopping, had an episode of foot sole pain so severe that I could not walk on it for three days. Has anyone else had the neck crunching and/or tinnitus? I am hoping it eventually will go away but the longer it goes, I 'm starting to think I have it forever.