Jianzhen brought many traditional ingredients with him to Japan, including musk, agarwood, snail, rosin, dipterocarp, fragrant gall, sucrose, benzoin, incense, and dutchman's pipe root, as well as honey and sugar cane—all of which formed the basis for some 36 different medicines. https://arstechnica.com/science/2022/11/lost-8th-century-japanese-medical-text-by-buddhist-monk-has-been-found/