Designer drug
Designer drugs were first sold in the United States around 1925.  They were made because a lot of popular drugs were no longer allowed to be used.  The government passed a law making drugs like morphine and heroin illegal, causing people to find new drugs.  Ecstasy is another drug example.  It was legal and used for psychotherapy until 1985 when it was banned. Since 2005, there are many more drugs like these being developed.  Now there are designer drugs for several alternative drug groups.  These drugs have a lot of different effects and people choose each one for different reasons.