IRCT20221015056176N1 IRCT 2023-08-12 Islamic Azad University Investigating the effect of melatonin and zolpidem on postoperative sleep disturbance comparison of the effect of melatonin and zolpidem on the onset and number of sleep hours after laparoscopic abdominal surgery 2023-08-19 anticipated 168 Complete https://irct.ir/trial/71902 interventional Randomization: Not randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Blinding description: The participants in three groups and the researcher remain unaware of how the type of drug is allocated during the study. The patient is informed that there are three types of drug packages in a study and they will receive one of them randomly. they are similar in packaging and have no difference. 4 Sleep quality after laparoscopic abdominal surgery. Intervention 1: Intervention group: Patients who undergo laparoscopic abdominal surgery receive 10 mg zolpidem for 3 nights after surgery. Intervention 2: Intervention group: Patients who undergo laparoscopic abdominal surgery receive 6 mg of melatonin orally for 3 nights after surgery. Intervention 3: Control group: Patients who undergo laparoscopic abdominal surgery receive a placebo with the same appearance as the drugs of the intervention group for 3 nights after the surgery. No - There is not a plan to make this available Justification or reason for not sharing IPD is There are currently no plans to publish.