my mum has a rare cancer of the thymus gland and has, in the last year, had chemo and radiotherapy. At the same time she has heart failure and takes bisoprolol. Toward the end of last year her oncologist decided to drop the strength of her bisoprolol and add digoxin in the mix as she feels it's a safer option, despite it having been the heart specialist who had put her on the bisoprolol. Mum now lives almost entirely asleep and struggles to keep awake even whilst eating. I know she has lots of health issues but it seems the tiredness has appeared since starting the digoxin but nobody professionally seems to want to look into it.