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If there had not been a single episode of seizure
in last three years, attempt can be made to reduce the dosage. It should not be stopped...it may lead to rebound. It should only be done under strict neurological supervision...There is a chance for recurrence still...
Diet and 'natural' things may not be much help
You also seem to have Intention tremor
- you should see your neurologist
/ you may need additional investigations and drugs...
Wishing speedy recovery