Kombiglyze XR Dosage
Generic name: saxagliptin hydrochloride 2.5mg, metformin hydrochloride 1000mg
Dosage form: tablet, film coated, extended release
Medically reviewed on February 27, 2017.
The dosage of KOMBIGLYZE XR should be individualized on the basis of the patient’s current regimen, effectiveness, and tolerability. KOMBIGLYZE XR should generally be administered once daily with the evening meal, with gradual dose titration to reduce the gastrointestinal side effects associated with metformin. The following dosage forms are available:
- KOMBIGLYZE XR (saxagliptin and metformin HCl extended-release) tablets 5 mg/500 mg
- KOMBIGLYZE XR (saxagliptin and metformin HCl extended-release) tablets 5 mg/1000 mg
- KOMBIGLYZE XR (saxagliptin and metformin HCl extended-release) tablets 2.5 mg/1000 mg
The recommended starting dose of KOMBIGLYZE XR in patients who need 5 mg of saxagliptin and who are not currently treated with metformin is 5 mg saxagliptin/500 mg metformin extended-release once daily with gradual dose escalation to reduce the gastrointestinal side effects due to metformin.
In patients treated with metformin, the dosage of KOMBIGLYZE XR should provide metformin at the dose already being taken, or the nearest therapeutically appropriate dose. Following a switch from metformin immediate-release to metformin extended-release, glycemic control should be closely monitored and dosage adjustments made accordingly.
Patients who need 2.5 mg saxagliptin in combination with metformin extended-release may be treated with KOMBIGLYZE XR 2.5 mg/1000 mg. Patients who need 2.5 mg saxagliptin who are either metformin naive or who require a dose of metformin higher than 1000 mg should use the individual components.
The maximum daily recommended dosage is 5 mg for saxagliptin and 2000 mg for metformin extended-release.
No studies have been performed specifically examining the safety and efficacy of KOMBIGLYZE XR in patients previously treated with other antihyperglycemic medications and switched to KOMBIGLYZE XR. Any change in therapy of type 2 diabetes should be undertaken with care and appropriate monitoring as changes in glycemic control can occur.
Inform patients that KOMBIGLYZE XR tablets must be swallowed whole and never crushed, cut, or chewed. Occasionally, the inactive ingredients of KOMBIGLYZE XR will be eliminated in the feces as a soft, hydrated mass that may resemble the original tablet.
Dosage Adjustments with Concomitant Use of Strong CYP3A4/5 Inhibitors
The maximum recommended dosage of saxagliptin is 2.5 mg once daily when coadministered with strong cytochrome P450 3A4/5 (CYP3A4/5) inhibitors (e.g., ketoconazole, atazanavir, clarithromycin, indinavir, itraconazole, nefazodone, nelfinavir, ritonavir, saquinavir, and telithromycin). For these patients, limit the KOMBIGLYZE XR dosage to 2.5 mg/1000 mg once daily [see Dosage and Administration (2.1), Drug Interactions (7.1), and Clinical Pharmacology (12.3)].
Recommendations for Dosing and Administration in Renal Impairment
Assess renal function prior to initiation of KOMBIGLYZE XR and periodically thereafter.
KOMBIGLYZE XR is contraindicated in patients with an estimated glomerular filtration rate (eGFR) below 30 mL/minute/1.73 m2.
Initiation of KOMBIGLYZE XR in patients with an eGFR between 30 – 45 mL/minute/1.73 m2 is not recommended.
In patients taking KOMBIGLYZE XR whose eGFR later falls below 45 mL/minute/1.73 m2, assess the benefit risk of continuing therapy and limit dose of the saxagliptin component to 2.5 mg once daily.
Discontinuation for Iodinated Contrast Imaging Procedures
Discontinue KOMBIGLYZE XR at the time of, or prior to, an iodinated contrast imaging procedure in patients with an eGFR between 30 and 60 mL/min/1.73 m2 a history of liver disease, alcoholism or heart failure; or in any patient who will be administered intra-arterial iodinated contrast. Re-evaluate eGFR 48 hours after the imaging procedure; restart KOMBIGLYZE XR if renal function is stable [see Warnings and Precautions (5.1)].
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