I en klinisk undersøgelse med raske frivillige (N=12), der fik 60 mg morfin depotkapsler 2 timer før 1 600 mg gabapentin kapsel, steg det gennemsnitlige AUC for gabapentin med 44% sammenlignet med gabapentin uden morfin.
In a study involving healthy volunteers (N=12), when a 60 mg controlled-release morphine capsule was administered 2 hours prior to a 600 mg gabapentin capsule, mean gabapentin AUC increased by 44% compared to gabapentin administered without morphine.