Partner with Ileostomy after major bowel surgery still in hospital after 23 days

I am writing to ask if anyone out there has had complications following an illeostomy where there is still a high (3X) output from stoma leading to dehydration.

I am searching for an answer where the combination of codeine phospate, lomotil, loperimide, fybogel and now questran light hasn't lowered the stoma output significantly. He is in danger of dehydration and has experienced vomiting and headache after taking the questran light which was supposed to bind with bile salts but has been increased to 16 g/day. If anything the latest dosing in addition to the other drugs (see above) has increased urination, and increased the water content of the stoma output (and increased flatulence)

He can't go home until the stoma output is around 1000 ml and right now it is over 3000 ml. Has anyone else experienced vomiting, headache from Questran Light and the detrimental effect of increasing urination as well?

He has some electrolyte drinks but is still continuing to drink coffee and milk and soda drinks (shaken to remove the bubbles).

He is concerned too that there doesn't seem to be an resolution to getting the small intestine working appropriately? This is supposed to be a temporary ileostomy. I would be grateful to hear from people who may have had this problem.

Thank you in advance.

Best wishes,

Valerne