Two widely prescribed epilepsy drugs have been linked to a rare but serious allergic reaction that can be life-threatening, the U.S. Food and Drug Administration (FDA) warns.
Worldwide, more than 40 serious cases of the reaction, known as Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) syndrome, have been detected in people taking the drugs levetiracetam and clobazam. The former is more commonly known under brand names such as Keppra or Keppra XR, and the latter is branded as Onfi or Sympazan.
