The disclosure relates to a method of treating or preventing a condition in a subject associated with the activation of an opioid receptor in the periphery by administering an effective amount of 5-(2-methoxy-4-{[2-(tetrahydro-pyran-4-yl)-ethylamino]-methyl}-phenoxy)-pyrazine-2-carboxamide (Compound I). In particular, the disclosure relates to a method of treating or preventing opioid-induced constipation or opioid-induced bowel dysfunction in a human without reducing centrally-mediated opioid analgesia or producing central opioid withdrawal symptoms by administering an effective amount of Compound I. The disclosure further relates to the use of Compound I for the preparation of a medicament for the treatment or prevention of a condition in a subject associated with the activation of an opioid receptor in the periphery.
