Germany’s health minister, Karl Lauterbach, plans to introduce stricter rules to curb the sale of nitrous oxide, sometimes known as laughing gas, especially to young people. The drug, which is used in medicine as an anaesthetic and for pain reduction, has become a particularly popular party drug among young people in Germany. The sale and consumption of nitrous oxide is not restricted under current law. “We will come up with a regulation quickly,” Lauterbach told public broadcaster ARD on Friday. Among the possibilities is including nitrous oxide in the list of psychoactive substances, which c…