Hi there, the various side effects
with keppra or levetiracetam are dizziness, irritability, tiredness, fatigue, severe allergic reactions, extreme dizziness, drowsiness, weakness or tiredness, memory loss, behavior changes like aggression, panic attacks, restlessness, new or worsening seizures etc. in the period immediately after a seizure attack, it could be the post ictal phase or confusion. Consult your neurologist for your evaluation and change of anti epileptic medication. Hope this helps.