Hello Karen:) It is nice to see you on here. Yes,magnesium is a wonder drug for me,but ONLY Blackmores magmin.I have tried different ones when it has been out of stock,and they truly don't work.I actually spoke to the pharmacist about it,and he explained it in such detail that I had no idea what he was talking about!!!!Lol.Anyway,get some of it and give it a try.I take two tablets a day ,at the same time as I take my Tamoxifen.You can take up to 6 tablets a day.Let us know if it helps.Cheers Robyn xox