Hi there. 

I am wandering is it ok to drink mineral water during treatment. My mum needs to up her hydration levels and I am wanting to buy her a case or two of water, but unsure of the best type to give her. Struggling to find info anywhere on the net of what is and isn't ok to drink. Bottled water would save her having to go up and down the stairs to get more water. 

Any advice appreciated :)