Indeed, Latuca serriola is named "wild opium lettuce" and quite effective for pain relief. 'The sap is a natural latex that can either be taken in pills or smok

Indeed, Latuca serriola is named "wild opium lettuce" and quite effective for pain relief. 'The sap is a natural latex that can either be taken in pills or smoked in a pipe. It appears to cause a numbing sensation that spreads through the body. It does not normally impart a euphoric "high" feeling.' Opium lettuce does not contain opium. It is also effective against coughs; powdered, it can treat sunburns, and it has probably been in use for eons.