<unk>  is a mu-opioid receptor agonist that is FDA approved for the treatment of adults with irritable bowel syndrome with diarrhea (IBS-D).   Common adverse reactions include constipation, nausea and abdominal pain (>5%)..
Eluxadoline
Etozoline
Cloranolol
Noxytiolin
Buflomedil
Metergoline
Toloxatone
Arbutamine