The origin of the immediacy of this issue is twofold. Firstly, the problem concerns drugs which are already legally, safely and widely used amongst patient populations: Ritalin/Adderall for Attention Deficit Hyperactivity Disorder and Modafinil for narcolepsy. Secondly, this method of enhancement is one that is actually in current use in an entirely unregulated fashion, by a significant proportion of the population. In the U.K. Ritalin and Adderall are considered class B drugs punishable up to 5 years in prison for possession, and Modafinil is considered a prescription only medicine.