Parsly contains myristicin especially the seeds. You would have too eat alot of leaves I'm guessing to ingest a adequet dosage but the seeds contain a higher concentration. Myristicin is not really a very sought after recreational drug however. But the parsly seeds may not contain the carcinogen safrole. But the safrole may contribute to the hallucinogenic effect. The safrole and myristicin must be metabolized by the body before any effects are felt that is why it takes so long for the effects of myristicin to take effect and that is why the effects very so greatly from individual to individual because everyone's body is different the compounds may be metabolized differently buy different people.