I had an operation for cancer in December 2018. 10 lymph nodes were also removed . The tumour was HER2 negative. I have now been told that it is essential that I take 2.5 mg of Letrozole a day. I never take pills (not even asprin) I have been readin about all the side affects of this drug. Is anyone taking it and can you tell me how it has affected you. Thank you