What Causes Low Dilantin Levels In Blood?
If no serious side effects, you can continue the same treatment.
Detailed Answer:
Hello and thanks for using HCM.
I have read your question and understand your concerns.
Eptoin, Dilantin are different names for the same drug ( Phenytoin).
Your blood levels of Phenytoin are low because you are taking insuficient dosage.
Blood levels of Phenytoin could be increased, if necessary, by taking higher doses ( 200 to 300 mg daily).
Since you didn't experienced seizures from a long time, I don't see a reason to change the current medication, except if long time use of Phenytoin resulted in bothersome undesirable side effects. ( bone loss, gum disease).
The reason to switch to Levetiracetam is because long term use of Phenytoin is not preferred, but you used minimal dosage, so this option can wait.
In my opinion, you should continue the actual treatment plan, continuing follow up with your Neurologist of course, and leave these two possibilities ( starting Levetiracetam or increase the Phenytoin dosage) to the future, if you will experience seizures.
Reports include abnormal brain MRI findings, but not specified, or not related directly to seizures.
EEG shows abnormal findings related to memory problems ( probably temporal lobes atrophy ), but no seizures activity.
Hope you found the answer helpful.
I remain at your disposal for further questions and clarifications.
Take care.