Not sure if different brands make a big difference - for me it is Sandoz and I take mine just after lunch everyday. I found the evenings I couldn't settle, perhaps it was early days of adjusting in the bigger picture of where I was at but I have settled into taking Tamoxifen early afternoon.
I had an email sent to me from a different organisation with regard to male Breast Cancer so I thought I would post the link here for the males on this site if any live nearby this event
https://www.thinkpink.org.au/centre-programs/supporting-blokes-bendigo-15-mar/