| − | '''Opium''' is a narcotic drug, a crude extract of the opium [[poppy]], Papaver somniferum. Further processing of opium produces [[morphine]], [[heroin]] and other '''opiate''' drugs, so called for their source. | + | '''Opium''' is a narcotic drug, a crude extract of the opium [[poppy]], Papaver somniferum. [[Morphine]], and its prodrug [[codeine]], are the narcotic substances that occur naturally in opium. Further processing of opium produces [[heroin]], synthesised from the dry latex of the opium poppy, and other '''opiate''' drugs, so called for their source. |