I've been on tamoxifen for five years snd came off it as advised by docs three weeks ago. And since then I've realised I'm being very irritable...lots of mood swings and really quite bolshy. For example a bloke refused to reverse his car to let me pass on a narrow road...he tried to make me reverse...but I'd have been backing onto a busy main road. Rather than try to reason with him I just switched off my engine. Has anyone else had this? I'm presuming it is my hormones sort of waking up again....