Opium - is a resinous narcotic formed from the latex released by wounding the immature seed pods of opium poppies (Papaver somniferum). It contains up to 16% morphine, an opiate alkaloid, which is most frequently processed chemically to produce heroin for the black market

Oxymorphone - a semisynthetic narcotic analgesic similar to morphine that produces less nausea, constipation, and respiratory depression.

Opiates - a major class of drugs that depress the central nervous system and are used principally to relieve pain. Examples include morphine, heroin, and codeine.