<qa>  What is the maximum vitamin C concentration determined for each patient?All eligible patients undergoing laparoscopic cholecystectomy at AUB-MC will be included in the study. Patients will be randomized into two groups to receive either single dose oral vitamin C 2g Study Group or identically looking placebo capsules Control Group. Both the patients and the investigation team will be blinded to the type of intervention. Intraoperative anesthesia management will be similar for both groups. Postoperative pain control will be achieved with patient controlled analgesia via a patient controlled morphine pump in both groups. At several time intervals and up to 24 hours postoperatively, the pain scores, morphine consumptions, nauseavomiting scores, sedation scales, itching scales, and patient satisfaction scales will be obtained for all patients. Also, the peak vitamin C concentration will be determined for each patient. 