I take tablets at night and tablets in the morning, I'm 74, I also have Sleep Apnoea and sleep with a mask - I also have kidney issues and am diabetic - apart from all that and more I'm fine !
I used to always take a glass of water to my bedside, but over the last decade I use a 500g closed 'pop' bottle, (sterilised every now and then with Milton tablets) with fresh water, having spilt the water in a glass more times than I care to remember. I find that the bottle is great and it's nearly empty by the time I'm dressed... Why buy one of these expensive 'water bottles'.