
The U.S. Food and Drug Administration (FDA) has issued a warning against two antiseizure medications that can cause a rare but potentially life-threatening reaction if not diagnosed and treated quickly.
Antiseizure drugs levetiracetam (sold under the brand names Keppra, Keppra XR, Elepsia XR and Spritam) and clobazam (sold under brand names Onfi and Sympazan) can cause a serious hypersensitivity reaction called drug reaction with eosinophilia and systemic symptoms (DRESS), the FDA said in a news release Tuesday.