The invention aims to provide a drug having an activity on inhibiting a decrease in pain threshold. Since a κ-opioid receptor agonist effectively inhibits the decrease in pain threshold, it is useful as an inhibitor of pain threshold decrease.
本发明旨在提供一种具有抑制痛阈降低活性的药物。由于κ-阿片受体激动剂能有效抑制痛阈的降低,因此它可以作为痛阈降低的
抑制剂。