Recent studies have suggested that GR-89696 and related κ2-selective agonists may be useful for preventing the itching which is a common side effect of conventional opioid analgesic drugs, without the additional side effects of non-selective kappa agonists.
Nedavne studije indiciraju da su GR-89696 i srodni κ2-selektivni agonisti korisni u sprečavanju svrabeža koji je uobičajena nuspojava konvencionalnih opioidnih analgetika, bez dodatnih nuspojava ne-selektivnih kapa agonista.