My mother has talked about her experience with Tamoxifen and she ...

My mother has talked about her experience with Tamoxifen and she is miserable, I feel that I have to do something for her. She lives in Scotland and of course their treatment is about as good as third world countries. She called me from overseas asking if there is anything I can do for her, everything she has been given does not help. She has the most severe eye dryness that she has ever had and she wakes up at night and stays awake because it is so bad, is there anyone who can give me some information on what could help her, I'm willing to try anything!!!!