Abstract: The disclosure provides a compound of formula (I) for treating cerebral infarction, a pharmaceutical composition comprising the compound, a method of manufacturing a pharmaceutical composition for treating cerebral infarction comprising use of the compound, use of the compound for manufacturing a pharmaceutical composition for treating cerebral infarction, or a method for treating cerebral infarction comprising administering the compound or the pharmaceutical composition. The cerebral infarction includes, for example, lacunar infarction, atherothrombotic cerebral infarction, and cardiogenic embolism.

Abstract: Provided is a prophylactic and/or therapeutic drug for mild cognitive impairment, which can improve interstitial flow in cerebral blood vessel and the like to achieve sufficient clearance of harmful proteins accumulated in the brain. The prophylactic and/or therapeutic drug includes 6-[4-(1-cyclohexyl-1H-tetrazole-5-yl)butoxy]3,4-dihydrocarbostyril or a salt thereof as an active ingredient. The prophylactic and/or therapeutic drug can improve a flow of interstitial fluid around blood vessels in a drainage pathway to excrete harmful proteins. The prophylactic and/or therapeutic drug for mild cognitive impairment may take the form of a pharmaceutical product for oral administration, a liquid pharmaceutical product for oral administration, or an injectable preparation.

Abstract: Provided is a prophylactic and/or therapeutic drug for mild cognitive impairment, which can improve interstitial flow in cerebral blood vessel and the like to achieve sufficient clearance of harmful proteins accumulated in the brain. The prophylactic and/or therapeutic drug includes 6-[4-(1-cyclohexyl-1H-tetrazole-5-yl)butoxy]3,4-dihydrocarbostyril or a salt thereof as an active ingredient. The prophylactic and/or therapeutic drug can improve a flow of interstitial fluid around blood vessels in a drainage pathway to excrete harmful proteins. The prophylactic and/or therapeutic drug for mild cognitive impairment may take the form of a pharmaceutical product for oral administration, a liquid pharmaceutical product for oral administration, or an injectable preparation.

Abstract: Provided is a prophylactic and/or therapeutic drug for mild cognitive impairment, which can improve interstitial flow in cerebral blood vessel and the like to achieve sufficient clearance of harmful proteins accumulated in the brain. The prophylactic and/or therapeutic drug includes 6-[4-(1-cyclohexyl-1H-tetrazole-5-yl)butoxy]3,4-dihydrocarbostyril or a salt thereof as an active ingredient. The prophylactic and/or therapeutic drug can improve a flow of interstitial fluid around blood vessels in a drainage pathway to excrete harmful proteins. The prophylactic and/or therapeutic drug for mild cognitive impairment may take the form of a pharmaceutical product for oral administration, a liquid pharmaceutical product for oral administration, or an injectable preparation.

Abstract: Provided is a prophylactic and/or therapeutic drug for mild cognitive impairment, which can improve interstitial flow in cerebral blood vessel and the like to achieve sufficient clearance of harmful proteins accumulated in the brain. The prophylactic and/or therapeutic drug includes 6-[4-(1-cyclohexyl-1H-tetrazole-5-yl)butoxy]3,4-dihydrocarbostyril or a salt thereof as an active ingredient. The prophylactic and/or therapeutic drug can improve a flow of interstitial fluid around blood vessels in a drainage pathway to excrete harmful proteins. The prophylactic and/or therapeutic drug for mild cognitive impairment may take the form of a pharmaceutical product for oral administration, a liquid pharmaceutical product for oral administration, or an injectable preparation.

Abstract: Provided is a prophylactic and/or therapeutic drug for mild cognitive impairment, which can improve interstitial flow in cerebral blood vessel and the like to achieve sufficient clearance of harmful proteins accumulated in the brain. The prophylactic and/or therapeutic drug includes 6-[4-(1-cyclohexyl-1H-tetrazole-5-yl)butoxy]3,4-dihydrocarbostyril or a salt thereof as an active ingredient. The prophylactic and/or therapeutic drug can improve a flow of interstitial fluid around blood vessels in a drainage pathway to excrete harmful proteins. The prophylactic and/or therapeutic drug for mild cognitive impairment may take the form of a pharmaceutical product for oral administration, a liquid pharmaceutical product for oral administration, or an injectable preparation.