In this article we present a catalogue of medicinal products preserved in a manuscript copy among the papers of a druggist who died in Madrid in 1599. This catalogue, whose title expresses its normative character, contains 423 entries and is signed by Andrés Zamudio de Alfaro, Protomédico General of Castile from 1592 until his death in 1599. It was presumably issued by the Real Tribunal del Protomedicato during the last decade of the sixteenth century for the use of the protomédicos and examiners who carried out official visits to apothecaries under the aegis of the Tribunal, in accordance with the royal decrees of 1588 and 1593, and was also distributed among the apothecaries themselves and their suppliers, such as the druggist who possess...