The Effect of Fecal Microbiota Transplantation in Ulcerative Colitis

Inclusion Criteria: * Diagnosed with Ulcerative Colitis (UC) * SCCAI between 4 and 10 at inclusion * On a stable dose of 5-aminosalicylic acid (5-ASA) or without current treatment. * Previous treatment with glucocorticoids, thiopurines and/or biological treatment was accepted. * Fecal Calprotectin \> 250 mg/kg * Colonoscopy performed within the last 3 years * Capable of writing and speaking Danish * Attending regular follow-ups by a specialist in gastroenterology. Exclusion Criteria: * Biological treatment within the last four weeks * Treatment with antibiotics within 48 hours before intervention * Alcohol use above current Danish guidelines (14 units/week for men and 7 units/week for women) * Pregnancy or planned pregnancy * Active cancer disease * Medical treatment of mental disorder * Other chronic gastroenterological disorder besides UC, Irritable Bowel Syndrome (IBS) or Reflux-disease.