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  • Title: Flushing profile of extended-release niacin/laropiprant versus gradually titrated niacin extended-release in patients with dyslipidemia with and without ischemic cardiovascular disease.
    Author: Maccubbin D, Koren MJ, Davidson M, Gavish D, Pasternak RC, Macdonell G, Mallick M, Sisk CM, Paolini JF, Mitchel Y.
    Journal: Am J Cardiol; 2009 Jul 01; 104(1):74-81. PubMed ID: 19576324.
    Abstract:
    Niacin has beneficial effects on a patient's lipid and lipoprotein profiles and cardiovascular risk, particularly at doses >2 g/day, but is underused due to flushing. Laropiprant (LRPT), a selective prostaglandin D(2) receptor-1 antagonist, decreases flushing associated with extended-release niacin (ERN). We compared flushing with ERN/LRPT dosed by a simplified 1-g --> 2-g regimen versus gradually titrated niacin extended-release (N-ER; given as NIASPAN, trademark of Kos Life Sciences LLC). Patients with dyslipidemia (n = 1,455) were randomized 1:1 to ERN/LRPT (1 g for 4 weeks advanced to 2 g for 12 weeks) or N-ER (0.5 g for 4 weeks titrated in 0.5-g increments every 4 weeks to 2 g for the final 4 weeks). Aspirin/nonsteroidal anti-inflammatory drugs were allowed to mitigate flushing. Flushing severity was assessed using the validated Global Flushing Severity Score (GFSS; none 0, mild 1 to 3, moderate 4 to 6, severe 7 to 9, extreme 10). Patients on ERN/LRPT, despite more rapid niacin titration, had less flushing than those on N-ER, as measured by number of days per week with moderate or greater GFSS across the treatment period (p <0.001). More than 2 times as many patients had no episodes of moderate, severe, or extreme flushing (GFSS > or =4) with ERN/LRPT than with N-ER (47.0% vs 22.0%, respectively) across the treatment period. Fewer patients on ERN/LRPT discontinued due to flushing than those on N-ER (7.4% vs 12.4%, p = 0.002). Other than the decrease in flushing, the safety and tolerability profile of ERN/LRPT was similar to that of N-ER. In conclusion, improvement in flushing with ERN/LRPT versus gradually titrated N-ER supports a rapidly advanced 1-g --> 2-g dosing regimen, allowing patients to start at 1 g and quickly reach and tolerate the optimal 2 g dose of ERN.
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