I have been taking arimidex for 2 1/2 years and am suffering the usual side effects, hot flushes for which I am taking Gabapentina , this seems to help, but am suffering from tiredness and aching body, not just my joints at times my whole body seems to be aching, and I just dont seem to be able to do anything without feeling 'worn out' . I have another 2 1/2 years of taking Arimidex to go but can anyone tell me if after completetion of 5 years treatment - do all the side effects go.