Indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes when both empagliflozin and linagliptin are appropriate treatments.
Mechanism of Action
First combination approved by the FDA of a sodium glucose cotransporter-2 (SGLT2) inhibitor and a dipeptidyl peptidase-4 (DPP-4) inhibitor
Empagliflozin: SGLT2 inhibitor; SGLT2 is expressed in the proximal renal tubules and is responsible for the majority of the reabsorption of filtered glucose from the tubular lumen; SGLT2 inhibitors reduce glucose reabsorption and lower the renal threshold for glucose, thereby increasing urinary glucose excretion
Linagliptin: DPP-4 inhibitor; increases and prolongs incretin hormone activity, which is inactivated by DPP-4 enzyme; incretins regulate glucose homeostasis by increasing insulin synthesis and release from pancreatic beta cells and reducing glucagon secretion from pancreatic alpha cells
Absorption
Bioavailability: 30% (linagliptin)
Empagliflozin
Peak plasma time: 1.5 hr
Peak plasma concentration: 259-687 nmol/L
AUC: 1870-4740 nmol•hr/L
Distribution
Protein bound: 36.8% (empagliflozin); 75-99% (linagliptin; concentration dependent)
Vd: 73.8 L (empagliflozin); 1110 L (linagliptin)
Metabolism
Empagliflozin: Primary route of metabolism is glucuronidation by the uridine 5'-diphospho-glucuronosyltransferases UGT2B7, UGT1A3, UGT1A8, and UGT1A9
Linagliptin: Majority (~90%) is excreted unchanged, indicating that metabolism represents a minor elimination pathway
Elimination
Half-life: 12.4 hr (empagliflozin)
Oral clearance: 10.6 L/hr (empagliflozin)
Renal clearance: 70 mL/min (linagliptin)
Excretion
Feces: 41.2% (empagliflozin)
Urine: 54.4% (empagliflozin); 5% (linagliptin)
Enterohepatic: 80% (linagliptin)