Correct spelling for the English word "zimphen" is [zˈɪmfən], [zˈɪmfən], [z_ˈɪ_m_f_ə_n] (IPA phonetic alphabet).
Sodium metaoxycyanocinnamate, recommended as a gastroenteric stimulant and tonic in doses of gr. 8 (0.5).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.