The United Kingdom Misuse of Drugs Act 1971 aimed to control the possession and supply of numerous listed drugs and drug-like substances as a controlled substance. The act allowed and regulated the use of some Controlled Drugs (designated CD) by various classes of persons (e.g. doctors) acting in their professional capacity. In clinical practice, this mostly applies to the use of strong opiates for pain management and some amphetamine-like stimulants used for Attention-deficit hyperactivity disorder; both of which are regulated under Schedule 2.