The study represents an edition of just over 1500 medical receipts transmitted in three fourteenth-century compendia. The particular interest of these multilingual compilations lies in their date – earlier than most published receipts – and their showing the three languages of medieval England in vigorous and simultaneous use. The language of the Middle English receipts reveals distinctive features which add indispensably to our knowledge of the English language in this period. There are detailed indexes, including a survey of the medical conditions covered, and the notes provide comprehensive references to analogous receipts in other published collections, so shedding light on the processes of compilation and transmission.