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Usually in cases of epilepsy doctors advise to patients to take medicines for at least 3 years after last seizure episode. It is according to International Guidelines. He is on adequate dosing of Levetiracetam
. Levetiracetam is a add on drug and is new drug with safe profile. Both drugs have no major effect on appetite and loss of significant weight may be due to some other reason. The issues of memory forgetting names, dates etc are also not due to these drugs. As he is 76 and he is having memory impairment and also he is a known case of seizure disorder
so there are chances that he might have developed Dementic symptoms. Dementia is age related memory impairment and loss of cognitive functions.
So please visit a good Psychiatrist
for proper evaluation of dementia in him, and visit your neurologist
for dose adjustments if any for his seizures.
Thanks, Take Care
Dr. Seikhoo Bishnoi