@iserbrowm and @primek Thank you. I actually wondered about my water consumption but the hospital doctors and pharmacist and my own Osteopath keep telling me to keep it up. My Osteopath did suggest I increase my salt which is unusual for him. Due to the high volume of laxatives they have me on I need to keep really hydrated but maybe if I change the osmolax for something requiring less water. My local GP is away for the next three weeks, second choice only works Tuesday and Wednesday but I may see if my third choice is available. My Osteopath did ask me about mineral levels but this has not been tested for awhile.