Effect of Melatonin on Postoperative Pain After Simple Nephrectomy

"Melatonin, or N-acetylmethoxytryptamine, is a hormone secreted by the pineal gland in the brain. Light is the main factor that regulates melatonin production. Melatonin has important biological effects on the body and plays an important role in regulating the sleep wake cycle. Besides circadian rhythm stabilizing, exogenous melatonin has been investigated for other effects such as modulation of blood pressure, body temperature and cortisol control, immune function, and anti-oxidative defense.~Recent studies showed some benefits of perioperative short-acting melatonin in different groups of patients such as quality of recovery after surgery, diminished depressive symptoms and pain score reduction"

sugar coated tablets will be given to the patients at the night (8 PM) before the procedure and another dose 2 hours before surgery