Alkaloids

noun a hallucinogenic drug derived from the peyote cactus

• The effects of mescaline on the brain have been studied extensively by researchers.
• I heard that some people claim to have had spiritual experiences while on mescaline.
• Dude, have you ever tried mescaline? It's wild!
• His mind was like a kaleidoscope after taking mescaline.

noun Aconite can also refer to a poisonous extract from this plant used in ancient times as a poison or medicine.

• The toxic plant aconite is also known as wolfsbane.
• I heard that aconite is a really poisonous plant.
• Don't mess with aconite, it's no joke.
• Her words were like aconite, poisoning the atmosphere with negativity.