Psychoactive substances act 2013 is a law in the United Kingdom that says it is against the law to produce, supply, or import things called psychoactive substances. Psychoactive substances are things like drugs and alcohol that can change how you think and feel. Nobody is allowed to do these things unless they have a special licence to do so. The law is meant to help keep people safe from drugs that can be dangerous. It was made in 2013.