Lettuce Opium facts

While investigating facts about Lettuce Opium, I found out little known, but curios details like:

Lettuce produces a mild narcotic called lactucarium or "lettuce opium" and that its scientific name is Lactuca sativa.

"Lactucarium" a substance secreted by lettuce which is called "Lettuce Opium" due to its similar effects

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 2 of the best facts about Lettuce Opium I managed to collect.