The only way I got through 4yrs of Tamoxifen was to take a very low dose antidepressant called Endep 10mg. It helps with hot flushes, low mood and sleep. At such a low dose,it had no side effects for me and it really helped. I sleep with a tiny desk fan on my bedside table and roll towards it if I have a hot flush coming on. I carry a hand fan and a bottle of cold water with me at all times in summer. Nip a hot flush in the bud before it escalates by fanning and drinking water. You shouldn’t have to suffer so talk to your doctor.