surnamed Myrepsus, or "the ointment-maker," the author of a Greek pharmaceutical work, flourished in the thirteenth century at the court of the Emperor John III. His treatise is known to the public only in the form of a Latin translation entitled De Compositione Medicamentorum. Its value is almost cancelled by the fact that it places the most absurd monkish charms and talismans in the category of remedies, and is little else than a compilation from Nicolaus Prepositus, and other medical writers. Yet it has found a place in the second volume of H. Stephens's Medica Artis Principes, fol, Paris, 1567, and has since been reprinted.

surnamed Prepositus to distinguish him from Nicolaus Myrepsus, was the author of a Latin pharmaceutical work entitled Antidotarium, and flourished in the former half of the twelfth century as the principal of the medical school at Salerno. His book was a standard authority during the dark ages, was first printed at Venice in 1471, and has frequently been republished.