Q. Is it common to feel dizzy while switching from Phenytoin to Briviact?

Answered by
Dr. Rajyaguru
and medically reviewed by iCliniq medical review team.
Published on Dec 13, 2016 and last reviewed on: Oct 09, 2018

Hello doctor,

I recently tried switching medicines from Phenytoin to Briviact. Last night, was the first time I tried it. I am transitioning off the Phenytoin. I became dizzy, disoriented and felt very weird. I have not had a seizure in the last 9 years. But, I was not ready to go off the medicines, since I do a lot of traveling. My neurologist recommended to try a new medication with less side effects. Is this a common experience while switching Phenytoin to Briviact? I took it last night at 9.30 and I am still feeling out of it and irritable. I have never had this side effect from the Phenytoin.

Dr. Rajyaguru

Neuro Surgery Neurology Spine Surgery
#

Hi,

Welcome to icliniq.com.

  • Drowsiness and sleepiness are the most common side effect of the Briviact (Brivaracetam).
  • Usually, this side effect will get reduced over three to four days. If it does not improve, then I think you should switch back to Phenytoin. 
  • As you said, there were no seizures for 9 years, then it is a time to wean off your medicines.
  • I am sure that your doctor would have done an EEG (electroencephalogram) for you and there would be a plan to wean off the medicines if the EEG is normal.
  • If the side effects do not reduce over three to four days, you can switch back to Phenytoin and then gradually taper it under periodic EEG monitoring.

For further information consult a neurologist online --> https://www.icliniq.com/ask-a-doctor-online/neurologist

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