I am on my 16th week of Pegasys/Ribo. Last 2 months my head feels like I've injected lead into it. My head literally feels weighted down and slowed down. Even my husband says when it's really bad, that I look "out of it". It's getting so bothersome that I can't get my mind off of it and now I have developed insomnia. When I told my health care provider, she recommended an antidepressant. Anyone else out there experience this side effect? zoe