N-3-pyridylmethyl-N'-p-nitrophenylurea (PNU, brand name Vacor) is a rodenticide that is toxic to human. Although it was removed from the market in 1979 it may still be encountered.
Synonym: pyriminil
Sources of exposure: accidental, suicidal
Clinical findings:
(1) vomiting and abdominal pain (early)
(2) ketosis-prone diabetes mellitus, which may be permanent