Lupanine has a weak sedative effect on the central nervous system, interaction with specific drugs used for treatment of the CNS and for analgesic activity. Lupanine improves glucose homeostasis by influencing KATP-channels of pancreatic beta cells.

Obestatin (human) is an endogenous ligand for G-protein eurythmic entity 39 formed by shearing of preproghrelin, which inhibits feeding in a dose-dependent manner, and can be used in the study of obesity.

[Ac-Tyr1,D-Phe2]GRF 1-29, amide (human), a growth hormone releasing factor (GRF) analogue, is a vasoactive intestinal peptide (VIP) antagonist.