I think side effects might depend on whether the patient is pre-menopausal or post-menopausal. I was still having periods and the Tamoxifen made them flooding, gave me horrendous hot flushes and weight gain. Eventually one or other of the drugs I took brought on the menopause with a delightful exacerbation of symptoms 
"the sensible one" ( friendship)
Early Days - Can't stop crying



