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or phenatoin is a good anti epileptic drug. It is used in different type of seizures. You were taking it 200 mg per day and then stopped it after advise of doctor. Again you developed seizure so since last 7 years you are again taking this medicine. Your MR scan and EEG is normal and so far for last 7 years there is no seizure episode. Usually as per guidelines any episode of seizure should not be ignored and medicines are given for at least 3 years and then stopped if seizures are under control. As you are not having seizure I will advise you to visit your Neurologist
to take opinion regarding discontinuation of the drug.
Till then take proper precautions for seizures.
Dr. Seikhoo Bishnoi