The present invention relates to a multiple controlled-release tablet composition of
ruxolitinib or a pharmaceutically acceptable salt thereof, which is useful for treating
Janus kinase-associated diseases such as
myeloproliferative disorders, and a method for producing the same. More specifically, the present invention relates to a multiple controlled-release tablet composition and a method for producing the same, which exhibits a maximum
drug blood concentration similar to that of commercially available immediate-release formulations, while controlling the
drug release rate so as to efficiently maintain the
drug at or above the effective
blood concentration in the body, thereby enabling once-daily administration, unlike commercially available formulations that are administered twice daily.