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|1. (WO2018159702) MEDICINE|
|Applicants:||KOWA COMPANY, LTD.
The present invention establishes a technology for stably formulating an isoquinoline-6-amino derivative as an ophthalmic agent or the like. Provided is a medicinal preparation that is obtained by housing, in a polyester-based resin container or polyolefin-based resin container, an aqueous composition containing a compound represented by general formula (1) (in the formula: R1 and R2 each independently represent a hydrogen atom or a C1-C4 alkyl group; R3 represents a hydrogen atom or a hydroxyl group; "A" denotes -CH(R4)- or -CH2-CH(R4)-(here, R4 is an optionally substituted C6-C10 aryl group or an optionally substituted 5 to 10-membered heteroaryl group); and formula (1) also includes a tautomer thereof) or a salt thereof, or a solvate thereof.