Narceine is an opium alkaloid produced by the Papaver somniferum (opium poppy) plant.

[1] It is a bitter, crystalline compound with narcotic effects.

[citation needed] It was formerly used as a substitute for morphine.

[medical citation needed] Its name is derived from the Greek νάρκη (nárkē), meaning numbness, and the postfix -ine referring to an alkaloid.

This article about an alkaloid is a stub.