hello docter.my mother was takento hosp. for memory loss.she has undergone MRI BRAIN test.and as per radiologist report diffuse age related cerebral atrophy with old lacunes in the deep white matter of frontal and parietal lobes on either side.no focal/regional predominance of cerebral atrophy.gliotic lesion with sequelae of haemorrhage located along the lateral aspect of left occipital lobe-?chronic confusion. her age is of 70years.dr.prescribed her to take DONEP-5 TABLET daily after breakfast for 6months.she started taking since one month and she is complaining of dizziness.headache.shall we have to stop taking medicine?any other medication better than this?