Gastrointestinal discomfort regularly affects >25% of the population worldwide. One of the major contributors to GI discomfort is constipation, which has a prevalence of ~15% and symptoms of which have a significant negative impact on the sufferer's quality of life. One of the hallmarks of chronic constipation is slow progression of contents through the gut (i.e. slow gut / colonic transit time), which may be associated with hard stools that are difficult to expel.