The makers of the EpiPen failed to properly investigate more than 100 complaints that the device malfunctioned during life-threatening emergencies — including situations in which patients later died, according to a Food and Drug Administration warning letter sent to a Pfizer company.
The FDA said in the letter that Meridian Medical Technologies, a Pfizer company that manufactures the auto-injectors used to treat life-threatening allergic reactions, had detected faults in some units of the EpiPen and had failed to adequately respond.
