IRCT201701304365N20 IRCT 2017-02-16 Mazandaran University of Medical Sciences Effect of melatonin on pain intensity after lumbar disc surgery Effect of preoperative melatonin on pain intensity after lumbar disc surgery 2017-04-16 anticipated 80 Complete https://irct.ir/trial/4667 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: table of random numbers, Blinding description: In this study, participants, care providers, Investigator and Outcome assessor are blinded. 3 lumbar discopathy. Intervention 1: Intervention A: Tablet Melatonin 3 mg, 1 hour before surgery. Intervention 2: Intervention B: Tablet Melatonin 5 mg, 1 hour before surgery. Intervention 3: Intervention C: Tablet Melatonin 10 mg, 1 hour before surgery. Intervention 4: Control: Tablet Placebo, 1 hour before surgery. No - There is not a plan to make this available Justification or reason for not sharing IPD is The Researcher does not currently see the Need for Data sharing in this Study.