UK occult publisher Hadean Press announced the release of their latest Guide To The Underworld pamphlet, saying:
A new Guide from Robert Nixon is released today, this one for those of us who are interested in the intersection of magic and medicine. ‘The Secret Pharmacopeia of Pope John XXI: Extracts from the Thesaurus Pauperum’ is a fascinating collection of ‘home remedies’ and secret cures for a wide variety physical and emotional ailments, including baldness, insomnia, headache, pimples, gallstones, redness of the throat, nausea, coughs, toothache, sore eyes, earache, impotence, and many others (a few of which are virtually untranslatable into ‘polite English’).
https://www.hadeanpress.com/shop-guides/p/secret-pharmacopeia