Serious Reaction to Some Anti-Seizure Meds: FDA
FDA is warning of a rare but serious drug reaction to two anti-seizure medications — levetiracetam (UCB’s Keppra and Keppra XR, TriPoint Therapeutics’ Elepsia XR, and Aprecia Pharmaceuticals’ Spritam) and clobazam (Lundbeck Pharmaceuticals’ Onfi and Otter Pharmaceuticals’ Sympazan). An agency drug safety communication says the reaction is called Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS).
The notice says risk warnings are being added to the labeling and patient medication guides for the drugs. It says DRESS can include fever, rash, swollen lymph nodes, or injury to organs including the liver, kidneys, lungs, heart, or pancreas.
FDA says its cumulative review found 32 cases of DRESS in children and adults worldwide associated with levetiracetam and 10 cases for clobazam. “Most patients in these cases required hospitalization and received medical treatments,” FDA says, “and two patients treated with levetiracetam died. These numbers include only reports submitted to FDA and found in the medical literature, so there likely are additional cases about which we are unaware. We determined there was reasonable evidence that levetiracetam and clobazam were the causes of DRESS in these cases based on the timing of the onset of these events after receiving the medicines and the order in which they occurred. The majority of cases for which information about discontinuation was available reported that DRESS symptoms improved after the medicines were discontinued.”