Ar son aduatmairachta an leighis comsuigigtir an leigheas oir an tan is aduathmar blas an leighis agus nac eidir a gabail na a connmail isin gaile cumusgtir leigheas ded-baladh ded-blasda ris do claoclod a aduathmaracht agus is uime sin adubairt Ipocras an milbocain do cumusg re h-eliborus nigir agus adubairt Galen anís do cumusg re sgamonia.
Do turnamh ro laidirechta an leighis, comsuigigtir an leigheas oir an tan bis an leigheas ro-laidir, mar ata an t-opium noch ata fuar sa cethramad ceim go cumusgtir castorium noch ata te ris do turnam a fuara imarcaidhe.