This rodenticide causes beta islet cell destruction?
Vacor, or PNU, was removed from the US market in 1979 due to its ability to destroy beta islet cells. Initial presenting signs of disease included severe hypoglycemia followed by hyperglycemia and type 1 diabetes. (Johnson D, Kubic P, Levitt C. Accidental ingestion of Vacor rodenticide: the symptoms and sequelae in a 25-month-old child. Am J Dis Child. 1980;134(2):161-164.)