Extrapancreatic action of sulfonylurea (SU) drugs were extensively sum
marized. Hypoglycemic SU drugs stimulate glycolytic pathway and inhibi
t gluconeogenic pathway in the liver through regulating key enzymes su
ch as the bifunctional enzyme PFK2/F-2,6-P(2)ase and PEPCK. It is poss
ible that SUs improve the primary defects in NIDDM through both pancre
atic and extrapancreatic actions.