New York: Chemische Fabrik Güstrow; Lehn and Fink, [190-]. 15p., staplebound pamphlet, front cover stained at bottom; pharmaceutical company's slip pasted to front cover has become detached but is still present. Laid in is a leaflet reprinting a 1902 article by H. Kuehn about the aphrodisiac.
Brochure introducing the drug also known as Yohimbine, extracted from tree bark. Its use for fighting male impotence proved to be minimal, but it is still used as a dietary supplement.