Aim. In the present study, we aimed to compare the effects of isoflurane, sevoflurane and desflurane on the effect of sugammadex in reversing neuromuscular block. Methods. Ninty patients who were planned to undergo elective lower abdominal surgery under general anesthesia were included and were randomly assigned to 6 groups of 15. After intubation, group I1 and I2 patients received isoflurane, group S1 and S2 patients received sevoflurane and Group D1 and D2 patients received desflurane volatile anesthetic at 1.25 MAC. TOF values were recorded at the 10th, 20th, 30th, 60th and 90th minutes of the operation by an anesthetist blind to the groups. Group I1, S1 and D1 patients were given 2 mg kg-1 sugammadex and group I2, S2 and D2 patients were given neostigmine after the second response to TOF following the latest rocuronium dose was observed again. In each patient, the time elapsed between sugammadex administrations and 10%, 25% and 90% TOF ratio was recorded. Results. There was no difference among the groups in terms of the time elapsing to reach 10% TOF values while the times elapsing to reach 25% and 90% TOF were found to be the shortest in sevoflurane group and the longest in isoflurane group. Conclusion. We think that inhalation anesthetics used in general anesthetic practice, have different effects on the reversal action of sugammadex in neuromuscular blockade and that reversal effect of sugammadex is faster in patients receiving sevoflurane.