My mother has cancer last 13 years, and the last December she got multiple brain mets. Her primary is CA breast ,secondary is bone mets and finally brain.She done 5 WBRT in December.Some times her condition is going too bad and doctors giving her mannitol injection, last month she is in same condition and and happened fics, now we continuing her old medicines and Tab. Eptoin as new medicine, Is that good for her?