Evaluation of N-Acetylcysteine Efficacy to Reduce the Craving and to Prolong Abstinence Time of Coca Paste

In each patient recruited, assignation to placebo or N-Acetylcysteine group treatment wil be performed, after he/she has signed the informed consent. In the first visit, the evaluation by the psychiatrist and with the nurse team (structured evaluation, which includes the CCQ-N-10, CSSA, general health evaluation, urine drug test and basal blood screening), will be carried out. The nurse team will supervise the drug intake and they will observe 2 hours late the ADRs and general health status of patient, who will be responsible for the intake of the following medication doses. Each patient will be asked to attend twice week to his/her treatment center, during four weeks and each patient visit the clinical team will record the primary and secondary outcome.

In each patient recruited, assignation to placebo or N-Acetylcysteine group treatment wil be performed, after he/she has signed the informed consent. In the first visit, the evaluation by the psychiatrist and with the nurse team (structured evaluation, which includes the CCQ-N-10, CSSA, general health evaluation, urine drug test and basal blood screening), will be carried out. The nurse team will supervise the drug intake and they will observe 2 hours late the ADRs and general health status of patient, who will be responsible for the intake of the following medication doses. Each patient will be asked to attend twice week to his/her treatment center, during four weeks and each patient visit the clinical team will record the primary and secondary outcome.