Two new archaeological finds suggest Roman subjects at the northern edge of the ancient empire used a hallucinogenic and poisonous plant called black henbane, the effects of which were described by Greek philosopher Plutarch as “not so properly called drunkenness” but rather “alienation of mind or madness.” https://hyperallergic.com/871183/archaeologists-find-evidence-of-hallucinogenic-drug-in-ancient-rome/