Hi, I was prescribed tamoxifen and have been taking them for 9 days. I did not put two and two together for a a week that I had not had a decent night sleep. On Sunday night I was so wired I did not sleep one second and decided to google other side affects and discovered that insomnia was a side affect. I spoke to a nurse and was told I had to wait for a month for them to settle down and possible see my GP for sleeping tablets for the short term. A further solution was to start taking them at night! I changed my time which which made no difference and the only solution was a sleeping tablet for my sanity.
I am now trying to decide wherever to continue taken them.