Generic name: SITAGLIPTIN PHOSPHATE 100mg, SIMVASTATIN 10mg
Dosage form: tablet, film coated
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The dosages for therapy with JUVISYNC are 100 mg/10 mg, 100 mg/20 mg, 100 mg/40 mg, 50 mg/10 mg, 50 mg/20 mg, and 50 mg/40 mg (sitagliptin/simvastatin) once daily. JUVISYNC should be taken as a single daily dose in the evening. JUVISYNC must not be split or divided before swallowing.
The recommended starting dose is 100 mg/40 mg per day. For patients already taking simvastatin (10, 20, or 40 mg daily) with or without sitagliptin 100 mg daily, JUVISYNC may be initiated at the dose of 100 mg sitagliptin and the dose of simvastatin already being taken.
After initiation or titration of JUVISYNC, lipid levels may be analyzed after 4 or more weeks and dosage adjusted, if needed.
Patients with Renal Impairment
JUVISYNC is not recommended in patients with severe renal impairment or ESRD. JUVISYNC can be used in patients with normal renal function or mild renal impairment (creatinine clearance [CrCl] greater than or equal to 50 mL/min, approximately corresponding to serum creatinine levels of less than or equal to 1.7 mg/dL in men and less than or equal to 1.5 mg/dL in women), without adjustment of the sitagliptin dose. Because simvastatin does not undergo significant renal excretion, modification of the dose of the simvastatin component should not be necessary in patients with mild renal impairment.
For patients with moderate renal impairment (CrCl greater than or equal to 30 to less than 50 mL/min, approximately corresponding to serum creatinine levels of greater than 1.7 to less than or equal to 3.0 mg/dL in men and greater than 1.5 to less than or equal to 2.5 mg/dL in women), the recommended starting dose of JUVISYNC is 50 mg/40 mg once daily. For patients with moderate renal impairment who are already taking simvastatin (10, 20, or 40 mg daily) with or without sitagliptin 50 mg daily, JUVISYNC may be initiated at the dose of 50 mg sitagliptin and the dose of simvastatin already being taken.
Assessment of renal function is recommended prior to initiation of JUVISYNC and periodically thereafter. Creatinine clearance can be estimated from serum creatinine using the Cockcroft-Gault formula. [See Warnings and Precautions (5.4); Clinical Pharmacology (12.3).] There have been postmarketing reports of worsening renal function in patients with renal impairment treated with sitagliptin, some of whom were prescribed inappropriate doses of sitagliptin.
Concomitant Use with an Insulin Secretagogue (e.g., Sulfonylurea) or with Insulin
When JUVISYNC is used in combination with an insulin secretagogue (e.g., sulfonylurea) or with insulin, a lower dose of the insulin secretagogue or insulin may be required to reduce the risk of hypoglycemia. [See Warnings and Precautions (5.5).]
Coadministration with Other Drugs
Patients taking Verapamil, Diltiazem, or Dronedarone
Patients with Homozygous Familial Hypercholesterolemia
The recommended dosage is 100 mg/40 mg (for patients with normal or mildly impaired renal function) or 50 mg/40 mg (for patients with moderately impaired renal function) per day in the evening. JUVISYNC should be used as an adjunct to other lipid-lowering treatments (e.g., LDL apheresis) in these patients or if such treatments are unavailable.
Simvastatin exposure is approximately doubled with concomitant use of lomitapide; therefore, the dose of simvastatin should be reduced by 50% if initiating lomitapide. For patients with normal or mildly impaired renal function, JUVISYNC dosage should not exceed 100 mg/20 mg daily (or 100 mg/40 mg daily for patients who have previously taken simvastatin 80 mg daily chronically, e.g., for 12 months or more, without evidence of muscle toxicity) while taking lomitapide. For patients with moderately impaired renal function, JUVISYNC dosage should not exceed 50 mg/20 mg daily (or 50 mg/40 mg daily for patients who have previously taken simvastatin 80 mg daily chronically, e.g., for 12 months or more, without evidence of muscle toxicity) while taking lomitapide.
Chinese Patients Taking Lipid-Modifying Doses (greater than or equal to 1 g/day Niacin) of Niacin-Containing Products
Because of an increased risk for myopathy in Chinese patients taking simvastatin 40 mg coadministered with lipid-modifying doses (greater than or equal to 1 g/day niacin) of niacin-containing products, caution should be used when treating Chinese patients with JUVISYNC 100 mg/40 mg or 50 mg/40 mg per day coadministered with lipid-modifying doses of niacin-containing products. The cause of the increased risk of myopathy is not known. It is also unknown if the risk for myopathy with coadministration of JUVISYNC with lipid-modifying doses of niacin-containing products observed in Chinese patients applies to other Asian patients. [See Warnings and Precautions (5.2).]
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