€3.7m spent on medicine for prison inmates over the last two years

The largest medication bill is at Portlaoise prison, the data revealed. File picture: RollingNews.ie

More than €3.7m has been spent by the Irish Prison Service on medications for inmates over the past two years.

The bill at a single prison can be in excess of €50,000 a month, according to the data, with costs highest at the Midlands Prison in Co Laois.