Yeah, every month since J pouch creation I've suffered from severe dehydration; each occassion was worse than the last and all resulted in an emergency hospital admission by ambulance.
Every admission, the diagnosis was Gastroenteritis and the local hospital treating me for Kidney failure.
Without a colon and due to the loop ilostomy, enough fluids wasn't being absorbed and I dehydrated.
The dehydration crept up on me, it was very difficult to distinguish between tiredness and dehydration and by the time I'd realised, it has gone too far and was too late to replenish the lost fluids and electrolytes orally.
Since takedown, I've never dehydrated to such an extend, I'm always tired and lack energy and from time to time, I suffer severely from fatigue.
I tend to awake in the mornings feeling tired and remain so, despite how much I drink; I tend to perked up a little late afternoon though.
We sleep for 9 hours and that's 9 hours when we're not consuming fluids and it takes the best part of the day to replenish such fluids.
St Marks Hospital, recommend a Rehydration Solution:
http://www.stmarksfoundation.o...y%20Advice%20HOS.pdf
I believe Imodium can also help with the retention of fluids, not only does it thicken the output but it also slows down the bowel and doing so, it provides more time to absorb fluids, I guess via the small intestine and maybe the J pouch.