IRCT20201119049445N2 IRCT 2022-06-09 Esfahan University of Medical Sciences The effect of adding N-acetylcysteine ​​to the usual treatments of schizophrenia in improving the symptoms in patients referred to the ward and clinic of Khorshid Hospital in 1401 The effect of adding N-acetylcysteine ​​to the usual treatments of schizophrenia on the positive, negative and cognitive symptoms of patients with schizophrenia admitted 2022-06-21 anticipated 70 Complete https://irct.ir/trial/63784 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Factorial, Purpose: Treatment, Randomization description: Random blocks method that after sampling people are randomly divided into two equal groups by a table of random numbers and the codes are done by hiding the code card in thick envelopes (Concealed allocation) one of them The N-acetylcysteine ​​group is randomly assigned to the current treatment and the other to the placebo group with the current treatment is randomly assigned, Blinding description: In this study, in collaboration with the Faculty of Pharmacy of Isfahan University of Medical Sciences, drugs and placebo produced in the same form and with specific codes for each category are provided to patients and after the study is decoded.During this study, patients and the main researcher are kept blind from the study group. 1-2 Patients with schizophrenia who have undergone an acute phase. Intervention 1: Intervention group: N-acetylcysteine ​​at a dose of 600 mg daily in effervescent tablets for two months. Intervention 2: Control group: One placebo daily for two months. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more information