Osmolality of Oral Supplements and Ileostomy Output

Inclusion Criteria: * age 18 years or more * ilestomy established 6 weeks or more prior to inclusion * able to drink at least 100 ml fluid per 24 hours * i known inflammatory bowel disease, clinical remission judged by physician's global assessment (PGA) * less than 5 kg self-reported weight change during the past 3 months Exclusion Criteria: * self-reported intolerance to dairy products, including lactose * known renal insufficiency, defined by an eGFR less than 30 ml/min * known diabetes mellitus, defined by an HbA1C \> 48 mmol/mol (6.5%) * current enteral tube feeding or parenteral fluid or Nutrition support more than twice weekly