Rhoeadine (rheadine) is an alkaloid derived from the flowers of the corn poppy (Papaver rhoeas).

[1] It has been studied for its potential use in the treatment of morphine dependence.

[2] 5 different patients were admitted to ER after being intoxicated with corn poppy.

Symptoms of intoxication include nausea, vomiting, confusion, seizures, myosis and arrhythmia.

These symptoms may be an outlier due to the exceptionally high dose ingested.