The present invention provides pharmaceutical compositions useful as agents for the inhibition of progression of diseases associated with abnormal accumulation ofliverlipids. In particular, the pharmaceutical compositions of the present invention which comprise as an active ingredient a sodium/glucose co-transporter 2 inhibitor are highly suitable as an agent for the inhibition of progression of not only common fatty liver but also non-alcholic fatty liver disease (NAFL), non-alcholic steatohepatitis (NASH), hypernutritive fatty liver, diabetic fatty liver, alcholic fatty liver disease toxic fatty liver or the like.