Clostridioides difficile (C. diff)

Image of a colon with C. diff infection and the microscopic view of C. diff.

Clostridioides difficile, or C. diff, is a bacterium that can cause gastrointestinal symptoms, like nausea, watery diarrhea, stomach pain and stomach cramps that may be severe.

Fecal microbiota transplantation (FMT)

Fecal microbiota transplantation (FMT)

A fecal microbiota transplantation (FMT) is when stool is taken from a healthy donor, made into a liquid mixture and transferred into the colon of a sick patient, to introduce helpful bacteria.