This is a study to examine the effect of alpha adrenergic stimulation of the anal canal and rectum on parameters affecting the control of defecation in subjects with faecal incontinence. The study will investigate the effects of rectal suppositories containing 10 mg NRL001 given for seven days, once daily. Rectal compliance and median anal resting pressure will be considered the primary objective of the study. A pharmacokinetic evaluation plus safety and tolerability assessment including monitoring of electrocardiograms (ECGs), blood pressure and heart rate will also be evaluated as secondary objectives.