Thanks for writing in to Healthcare Magic!
The Zen contains the drug Carbamazepine which has got many side effects like dizziness, drowsiness, ataxia; dry mouth, abdominal pain, nausea, vomiting, anorexia; leucopenia, proteinuria, renal failure
, heart failure and the HYPONATREMIA.
Potentially Fatal: Agranulocytosis
, aplastic anaemia, hepatic failure, severe exfoliative dermatitis
and Stevens-Johnson syndrome
. All reactions do not occur in each patients but depends on patient-drug interaction
I think you had enough treatment duration with seizure free interval and you should taper off the drug in supervision of a good physician. I hope you would maintain without drug now.
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!