The present disclosure provides a method for using nalfurafine or
nalmefene for activating JNK / PRDX6 to stimulate localized
peroxide production that causes G-
protein depalmitoylation and deactivation of kappa
opioid receptors (KORs) in a subject; a method for using nalfurafine or
nalmefene for inactivating kappa
opioid receptors responsible for
dysphoria during mu-
opioid withdrawal in a subject; a method for using nalfurafine or
nalmefene for promoting stress resilience in a subject recovering from polysubstance withdrawal; a method for using nalfurafine or nalmefene for inactivating kappa
opioid receptor responsible for the
dysphoria and psychotomimetic effects of kappa opioid agonists administered to a subject for the treatment of pruritus or for the promotion of
diuresis; and a method for using nalfurafine or nalmefene in combination with a kappa
opioid agonist for the treatment of
neuropathic pain in a subject.