Abuse Liability and Human Pharmacology of Mephedrone

Exclusion Criteria

• •Daily consumption \>20 cigarettes and \>4 standard units of ethanol.
• •Regular use of any drug in the month prior to the study sessions. The treatment with single or limited doses of symptomatic medicinal products in the week prior to the study sessions will not be a reason for exclusion if it is calculated that it has been cleared completely the day of the experimental session.
• •Presence of major psychiatric disorders.
• •Present history of abuse or drug dependence (except for nicotine dependence).
• •Past history of drug dependence (except for nicotine dependence). Subjects with past history of drug abuse could be included.
• •Having suffered any organic disease or major surgery in the three months prior to the study start.
• •Blood donation 12 weeks before or participation in other clinical trials with drugs in the previous 4 weeks.
• •Subjects with intolerance or serious adverse reactions to drugs or amphetamines, ecstasy and hallucinogen derivatives, mephedrone or other cathinone.
• •History or clinical evidence of gastrointestinal, liver, renal or other disorders which may lead to suspecting a disorder in drug absorption, distribution, metabolism or excretion, or that suggest gastrointestinal irritation due to drugs.
• •Subjects unable to understand the nature, consequences of the study and the procedures requested to be followed.
• •Subjects with positive serology to Hepatitis B, C or HIV.