Heroin was first synthesized from morphine in 1874 and marketed by Bayer, the German pharmaceutical company, until it was made illegal in the U.S in 1924. Get the facts and learn more about the ways to reduce the harms of prohibition! This is the fourth and final video of a series that provides information about MDMA, cocaine, heroin, and methamphetamine, discussing where the drug comes from, its history, and best harm reduction practices for anyone who may choose to use the drug. http://bit.ly/