Opium (poppy tears, lachryma papaveris) is the dried latex obtained from the opium poppy (Papaver somniferum). Opium contains up to 12 percent morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine. The traditional method of obtaining the latex is to scratch ('score') the immature seed pods (fruits) by hand; the latex leaks out and dries to a sticky yellowish residue that is later scraped off the fruit. The production of opium itself has basically not changed since ancient times. However, through selective breeding of the Papaver somniferum plant, the content of the phenanthrene alkaloids morphine, codeine, and to a lesser extent thebaine, has been greatly increased. Opium for illegal use is often converted into heroin, which is less bulky, making it easier to smuggle, and which multiplies its potency to approximately twice that of morphine. Heroin can be taken by intravenous injection, intranasally, or smoked (vaporized) and inhaled.