Abstract: [Problem] Provided is an agent for preventing or treating diseases accompanied by urinary pain. [Means for Solution] A pyridyl non-aromatic nitrogen-containing heterocyclic-1-carboxylate compound or a salt thereof was confirmed to have not only an action of increasing effective bladder capacity but also an analgesic action against bladder pain and testis pain, based on FAAH inhibitory action. Accordingly, the pyridyl non-aromatic nitrogen-containing heterocyclic-1-carboxylate compound or a salt thereof can be used for preventing or treating interstitial cystitis/bladder pain syndrome and/or chronic nonbacterial prostatitis/chronic pelvic pain syndrome.

Abstract: [Problems] A compound useful as an active ingredient for a pharmaceutical composition for treating FAAH-related diseases is provided. [Means for Solution] The present inventors have made extensive studies on compounds having an FAAH inhibitory activity, and as a result, have found that a piperazine-1-carboxylate compound, in which benzimidazol-2-ylcarbonyl, benzofuran-2-ylcarbonyl or the like binds to the 4-position of the piperazine, has an excellent FAAH inhibitory activity and further has an action to increase the effective bladder capacity, an action to ameliorate sleep disorders, an anti-diuretic action, and an analgesic activity on lower urinary tract pain including bladder pain and the like, thereby completed the present invention.