co-dergocrine ( hydergine ) , an ergot preparation composed of four dihydrogenated peptide ergot alkaloids ( dihydroergocornine , dihydroergocristine , dihydro-alpha-ergokryptine , dihydro-beta-ergokryptine , 3:3:2:1 ) , has been reported to exert in vivo effects suggesting an interaction with dopaminergic systems .
C0304712
ergot preparation
C0012288
dihydroergocornine