This comparative randomized study included 45 patients in this study following receiving institutional ethical committee approval (Clinical Ethical Committee of Abant Izzet Baysal University, Bolu, Turkey. Ethical Committee Number: 2012/234) and collecting informed consent. Pre-anesthetic evaluations were conducted in these patients who were between the ages of 18 and 75 and fell into American Society of Anesthesiologists (ASA) risk categories I-II who were scheduled for elective laparoscopic cholecystectomy. Exclusion criteria; patients with any of the following: allergies against any of the drugs to be used in the study, current pregnancy, severe cardiac, renal, and liver diseases, previous upper abdominal surgery, acute cholangitis, a body mass index >32 kg m2, contraindications for epidural anesthesia and elective surgery.