Can anyone tell me anything about half dose of arimidex. I recently started with the 1mg dose of arimidex (standard) and feel horrible. Tired, shaky, mental fog, very emotional. I weigh only 124lb and recently had my ovaries removed, so my question is: why do I have to take the full 1mg of Armidex when women who are heavier than me and still have their ovaries take the same dosage. Will a half dose or every other day dose be just as effective for me? If anyone knows where I can get this answered, please let me know. I would like to get some information before I speak with my onc., I guess I need some ammunition. Thanks