Hello tkband - I'm very sorry to hear about your friend, she's probably still feeling fairly shell shocked, with so much happening since her diagnosis.
I've been on tamoxifen for nearly a year now. The main effects I found were hot flushes, and problems maintaining any kind of continuity of body temp. (e.g. I would be taking my jumper on and off constantly). I also feel very nauseous if I take my tablet late in the day. (On the other hand I know people who find it better to take it in the evening).
Most cancer treatments have a pay off in the form of side effects, so it really is a question of weighing up what is important to you.
I think with all these things she needs to discuss her treatment in detail with her oncologist, so she has all the information she needs. Her breast care nurse will also be very helpful in terms of talking through treatment options.
Someone else will probably be along tonight or tomorrow who can give you more info. - I'm probably not the best because I'm on other drugs as well as tamox. - so sometimes hard to know what drug causes what SE !
Your chemo question is hard to answer, it is really a question of weighing up how much it improves your prognosis compared with the efects. And chemo varies so much from person to person. Good luck to your friend and of course you are very welcome on this thread.
Happy Birthday Haggis - nice to hear from you. Hooray for end of chemo, hope you're feeling a bit better soon. I've been pottering in my greenhouse over the last few days - its great. If you are too tired to dig, just bark orders at your Dh and dad.