H-Val-Pro-Pro-OH(TFA), a proline peptide derivative from milk, is an ACE inhibitor with IC50 of 9 M.

Porcine dynorphin A (1-13) is a potent, endogenous κ opioid receptor agonist and is antinociceptive at physiological concentrations. Exposure to dynorphin A (1-13) causes acute increases in [Ca2+]i in individual neurons similar to increases seen with acute NMDA treatment.

Tubulin inhibitor 8 is an inhibitor of tubulin and various cancer cell lines and inhibits tubulin polymerisation and K562 cell growth with an IC50 of 0.73 μM and 14 nM respectively.