Will Giving Liofen Lead To Nausea, Confusion And Convulsion?

Hi,my mom is currently suffering from Glioblastoma multiforme stage 4,she became paralysed and speech impaired after her brain tumor surgery last year. I have been giving her palliative care since then. Currently,her condition has deteriorated very rapidly,recently she has been vomiting on numerous occasion. She also has developed sound hiccups,I am asked to give her Liofen 10mg, 3 times a day; however, I am slightly worried seeing the possible side-effects that include nausea, confusion and maybe convulsion. So, do you think should I continue giving her this tab for another 4-5 days?Kindly let me know asap