Alectinib - can I split the capsules?

Having recently been diagnosed with stage 4 lung cancer which has spread to other parts .but

because of a particular gene I have been put on alectinib capsules in 3 weeks they have shown 

good progress now because of a throat infection I can't swallow.dose anyone know if I split the capsules 

would they still be affective .really do need this medication.    Jean