Jentadueto

— THERAPEUTIC CATEGORIES —
  • Diabetes

Jentadueto Generic Name & Formulations

General Description

Linagliptin, metformin HCl; 2.5mg/500mg, 2.5mg/850mg, 2.5mg/1000mg; tabs.

Pharmacological Class

Dipeptidyl peptidase-4 (DPP-4) inhibitor + biguanide.

See Also

How Supplied

Tabs—60, 180; XR tabs 2.5mg/1000mg—60, 180; 5mg/1000mg—30, 90

Generic Availability

NO

Mechanism of Action

Linagliptin is an inhibitor of DPP-4, an enzyme that degrades the incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP). Thus, linagliptin increases the concentrations of active incretin hormones, stimulating the release of insulin in a glucose-dependent manner and decreasing the levels of glucagon in the circulation. Both incretin hormones are involved in the physiological regulation of glucose homeostasis. Incretin hormones are secreted at a low basal level throughout the day and levels rise immediately after meal intake. GLP-1 and GIP increase insulin biosynthesis and secretion from pancreatic beta cells in the presence of normal and elevated blood glucose levels. Furthermore, GLP-1 also reduces glucagon secretion from pancreatic alpha cells, resulting in a reduction in hepatic glucose output.
Metformin is an antihyperglycemic agent which improves glucose tolerance in patients with type 2 diabetes mellitus, lowering both basal and postprandial plasma glucose. Metformin decreases hepatic glucose production, decreases intestinal absorption of glucose, and improves insulin sensitivity by increasing peripheral glucose uptake and utilization. With metformin therapy, insulin secretion remains unchanged while fasting insulin levels and day-long plasma insulin response may actually decrease.

Jentadueto Indications

Indications

Adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.

Limitations of Use

Not for use in patients with type 1 diabetes. Not studied in patients with a history of pancreatitis.

Jentadueto Dosage and Administration

Adult

Individualize. Take twice daily with meals. Previously not on metformin: initially 2.5mg/500mg twice daily. Previously on metformin: start with 2.5mg linagliptin and current metformin dose twice daily. Previously on linagliptin and metformin: switch on mg/mg basis. Max 2.5mg/1000mg twice daily. Renal impairment (eGFR 30–45mL/min/1.73m2): not recommended. If eGFR falls <45mL/min/1.73m2, assess risk/benefit; discontinue if eGFR falls <30mL/min/1.73m2.

Children

<18yrs: not established.

Jentadueto Contraindications

Contraindications

Severe renal impairment (eGFR <30mL/min/1.73m2). Metabolic acidosis, diabetic ketoacidosis.

Jentadueto Boxed Warnings

Boxed Warning

Lactic acidosis.

Jentadueto Warnings/Precautions

Warnings/Precautions

Increased risk of metformin-associated lactic acidosis in renal or hepatic impairment, concomitant use of certain drugs (eg, cationic drugs), ≥65yrs of age, undergoing radiological contrast study, surgery and other procedures, hypoxic states, and excessive alcohol intake; discontinue if lactic acidosis occurs. Discontinue at time of, or prior to intravascular iodinated contrast imaging in patients with eGFR 30–60mL/min/1.73m2, history of hepatic impairment, alcoholism, hypoxemia, or will be given intra-arterial contrast; reevaluate eGFR 48hrs after procedure and restart therapy if renally stable. Suspend therapy if dehydration occurs or before surgery. Avoid if clinical or lab evidence of hepatic disease. Known risk factors for heart failure; monitor for signs/symptoms; evaluate and consider discontinuing if develops. Assess renal function prior to initiation and periodically thereafter; more frequently in elderly. Discontinue if pancreatitis, serious hypersensitivity reactions, severe joint pain, or bullous pemphigoid is suspected or occurs. History of angioedema to other DPP-4 inhibitors. Elderly, debilitated, uncompensated strenuous exercise, malnourished or deficient caloric intake, adrenal or pituitary insufficiency, or alcohol intoxication: increased risk of hypoglycemia. Measure hematologic parameters annually and serum Vit. B12 at 2–3 year intervals. Premenopausal women with anovulatory: ovulation may occur. Pregnancy. Nursing mothers.

Jentadueto Pharmacokinetics

Absorption

Absolute bioavailability: ~30% (linagliptin); ~50–60% (metformin). 

Distribution

Mean apparent volume of distribution at steady-state after a single IV dose of linagliptin 5mg: ~1110 L. Plasma protein bound (concentration-dependent) for linagliptin: ~99% at 1 nmol/L; 75–89% at ≥30 nmol/L; 70–80% at high concentrations.

Apparent volume of distribution of metformin after single oral doses of metformin IR 850mg tablets: 654±358 L. Metformin is negligibly bound to plasma proteins.

Elimination

Linagliptin: enterohepatic system (80%), renal (5%). Metformin HCl: renal (~90%). Half-life: ~11 hours (linagliptin); ~6.2–17.6 hours (metformin HCl).

Jentadueto Interactions

Interactions

Increased risk of lactic acidosis with topiramate, other carbonic anhydrase inhibitors (eg, zonisamide, acetazolamide, dichlorphenamide); monitor. Concomitant cationic drugs that interfere with renal tubular transport systems (eg, ranolazine, vandetanib, dolutegravir, cimetidine) may increase metformin levels; monitor. Avoid excessive alcohol intake (potentiates effects of metformin on lactate). Antagonized by strong P-gp or CYP3A4 inducers (eg, rifampin); consider alternatives to linagliptin if used in combination. Diuretics, steroids, phenothiazines, thyroid products, estrogens, oral contraceptives, phenytoin, sympathomimetics, calcium channel blockers, isoniazid, nicotinic acid, others may cause hyperglycemia. May need a lower dose of concomitant insulin and/or insulin secretagogue (eg, sulfonylurea) to reduce risk of hypoglycemia. β-blockers may mask hypoglycemia.

Jentadueto Adverse Reactions

Adverse Reactions

Nasopharyngitis, diarrhea, cough, decreased appetite, nausea, vomiting, pruritus, pancreatitis, hypersensitivity reactions; hypoglycemia, severe and disabling arthralgia, bullous pemphigoid; rare: lactic acidosis (may be fatal).

Jentadueto Clinical Trials

See Literature

Jentadueto Note

Not Applicable

Jentadueto Patient Counseling

See Literature

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