It's Very important to stay hydrated. Not cofee, tea, etc.. but good old fashioned water. A min or 40 ozs a day. Trust my there are times when I don't want to, but just a few sips throughout the day. Get 2 20 oz bottles to assist in knowing for sure how much you've had. Also PRUNE Juice. Do Not get the fancy sweetened bottles. Get the Simple, 100%, Unsweetened bottle or can. Drink aporox 20 oz. daily along with you 40 oz of water. Also a Stool Softener, a shotglass of Quality Olive Oil. Think of your body as a machine. It's important to keep your machine oiled well to function. Occasionally I will take "Linzess" but not often.
Good luck, I know how horrible it can be. Good luck and God Bless.