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  • Title: Fluvastatin in combination with other lipid-lowering agents.
    Author: Jokubaitis LA.
    Journal: Br J Clin Pract Suppl; 1996 Jan; 77A():28-32. PubMed ID: 8729588.
    Abstract:
    Fluvastatin, a new synthetic inhibitor of HMGCoA (3-hydroxy-3-methylglutaryl coenzyme A) reductase, has been studied in several models to examine its effects when used in combination with other lipid-modifying agents such as derivatives of fibric acid (bezafibrate), resins (cholestyramine), and niacin. The combination of fluvastatin with bezafibrate has been studied in a double-blind trial involving patients with well-documented familial hypercholesterolaemia. Fluvastatin 40 mg/day, combined with either bezafibrate 400 mg/day or cholestyramine 8 g/day, resulted in reductions in levels of low-density lipoprotein cholesterol (LDL-C), these being indistinguishable between the groups; however, significantly greater increases in levels of high-density lipoprotein cholesterol (21.3%) and reductions in levels of triglycerides (25.1%) were seen with the fluvastatin-bezafibrate combination. No notable increases were seen in levels of serum creatine kinase, aspartate aminotransferase, or alanine aminotransferase, and no cases of myopathy were observed. In a study model that examined low-dose combinations of fluvastatin with cholestyramine, reductions in levels of LDL-C of 15.8% and 19.3% were seen with fluvastatin 10 mg and 20 mg, respectively. After an 8-week interval in which a daily dosage of cholestyramine 8 g was added, from baseline, reductions of 26.3% in the 10 mg fluvastatin-cholestyramine group and 31.2% in the 20 mg fluvastatin-cholestyramine group were observed, whereas the placebo-cholestyramine group displayed a reduction of 14.9%. Doubling the resin dosage to 16 g/day for the final 8 weeks of the study provided little additional benefit. Myotoxicity has been observed when lovastatin is coadministered with niacin, and so the combination of niacin with fluvastatin has also been studied to examine the possibility of this effect occurring. Patients were randomised to either fluvastatin 20 mg or placebo for 6 weeks, after which time open-label niacin was administered to all patients and titrated to a final dosage of 3 g/day. After 6 weeks, fluvastatin produced a 20.8% reduction in LDL-C levels from baseline. When combined with niacin, a 43.7% reduction was noted at the week 15 endpoint, against the 26.5% reduction seen with niacin monotherapy. The combination was well tolerated, with no reports of myopathy or of significant elevations in creatine kinase or liver transaminase levels. Combinations of fluvastatin with a variety of other agents have been shown to have significant effects on lipid profiles, with no evidence to date of clinically remarkable safety findings. Thus, the use of combination therapies may result in optimal management of patients with moderately severe hypercholesterolaemia and mixed dyslipidaemic profiles.
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