The investigation is primarily divided into two sections, the medication phase and the surgical phase. In the medication phase of the investigation, treatment group will receive a single dose of Gabapentin 900mg 2-3h before commencement of surgery (initial incision). Placebo group will receive a single dose of placebo medication 2-3h pre-operatively (before commencement of surgery). Both gabapentin and placebo medication will look similar in shape, color, and size. Hospital pharmacy will be recruited to provide the placebo and gabapentin medications. Hospital pharmacy will be responsible for delivering the medication to the participant prior to the surgical procedure.