Keppra ( R ) immediate-release tablets cause somnolence and fatigue , coordination difficulties , and behavioral abnormalities ( e.g. , psychotic symptoms , suicidal ideation , and other abnormalities ) , as well as hematological abnormalities . In adults experiencing partial onset seizures , the most common adverse reactions observed with Keppra ( R ) in combination with other AEDs were somnolence , asthenia , infection , and dizziness .