I have been Reading the threads on here about venlafaxine. Has anyone else been on this drug? As long as I have which is 10 years? I want to start withdrawing from it. some one mentioned brain zap. if I forget to take my medication I know by the afternoon because I feel weird and get this clicking or sparking. It's difficult to explain it sounds like electricity in my head. Has anybody else had any strange effects from this drug?