Discontinue use if serious hypersensitivity reaction, pancreatitis, severe & disabling arthralgia or bullous pemphigoid is suspected. Not to be used in type 1 DM or diabetic ketoacidosis. History of angioedema to another dipeptidyl peptidase-4 inhibitor; heart failure. Assess renal function prior to & periodically thereafter. Concomitant use of sulfonylurea or insulin. Not recommended in moderate or severe renal impairment, ESRD requiring hemodialysis. Pregnancy & lactation. Ped patients <18 yr. Elderly.