Galanin (1-30), human is a 30-amino acid neuropeptide, and acts as an agonist of GalR1 and GalR2 receptors, with Kis of both 1 nM. Endogenous peptide with multiple endocrine, metabolic and behavioral effects. Has been shown to have an action on intestinal smooth muscle, insulin and somatostatin release, and synaptic neurotransmission.

SHA 68 is a potent and selective non-peptide antagonist of neuropeptide S receptor (NPSR)(NPSR Asn107 and NPSR Ile107 with IC50s of 22.0 and 23.8 nM, respectively).

GW438014A is a potent, selective antagonist of the NPY-Y5 receptor, effectively inhibiting food consumption and curbing body weight gain in obese rodents.