Efficacy of Clonidine in Reducing Craving in Inpatients With Cocaine and Crack Use Disorder

Inclusion Criteria: * Patients hospitalized in the adult Alcohol and Drugs ward of the Perdizes Institute (IPer) at the Hospital das Clínicas, University of São Paulo Medical School * DSM-5 criteria for cocaine and/or crack use disorder * Voluntarily seeking treatment * Must be able to swallow pills Exclusion Criteria: * Inability to read and/or understand the study questionnaires * benzodiazepine use disorder * opioid use disorder * alcohol use disorder