 Cephalon pleaded guilty to a criminal violation and paid several fines, including and fines to the U.S. government in 2008.In mainland China, modafinil is strictly controlled like other stimulants, such as amphetamines and methylphenidate.It has been classified as Class I psychotropic drug, meaning that only doctors who have the right to prescribe narcotics and Class I psychotropic drugs (usually through special examination) can prescribe it for no more than three-day use (or seven-day use for control/extend-release products).