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Published on: November 10, 2017
Effect of very-low-dose niacin on high-density lipoprotein in patients undergoing long-term statin therapy
Jennifer Wink1, George Giacoppe, James King
1Department of Medicine, Madigan Army Medical Center, Tacoma, WA 98431, USA.
Insights
Very low-dose niacin, when added to statin therapy, significantly increases high-density lipoprotein cholesterol (HDLC) levels. This approach offers a safer alternative to traditional niacin doses, with minimal side effects for coronary artery disease risk reduction.
Area of Science:
- Cardiology
- Pharmacology
- Metabolic Diseases
Background:
- Low high-density lipoprotein cholesterol (HDLC) is a significant risk factor for coronary artery disease.
- Niacin effectively raises HDLC but is limited by dose-dependent side effects.
- Investigating very low-dose niacin with statins aims to mitigate side effects while improving lipid profiles.
Purpose of the Study:
- To evaluate the efficacy of very low-dose niacin in combination with statin therapy.
- To determine if this combination significantly increases HDLC levels.
- To assess the side effect profile compared to traditional niacin doses.
Main Methods:
- A randomized, double-blind, placebo-controlled trial involving 50 patients on stable statin therapy.
- Participants received either placebo or 50 mg niacin twice daily for 3 months.
- Exclusion criteria included diabetes and active smoking; primary endpoints were changes in HDLC and reported side effects.
Main Results:
- The addition of very low-dose niacin to statin therapy resulted in a significant mean increase in HDLC (2.1 mg/dL, p=0.0246).
- Flushing was reported by 5 patients in the niacin group versus 2 in the placebo group.
- No major side effects were observed, and no patients discontinued medication due to adverse events.
Conclusions:
- Very low-dose niacin, when combined with statin therapy, effectively increases HDLC cholesterol.
- This therapeutic strategy appears to avoid the significant side effects associated with higher niacin doses.
- The findings support the use of very low-dose niacin as an adjunct to statins for managing lipid profiles.
Background:
A low level of high-density lipoprotein (HDLC) is a proven risk factor for coronary artery disease. Niacin raises HDLC levels, but it is infrequently used because of its side effect profile. Niacin's side effects are dose related. This study tests the hypothesis that very low-dose niacin, in conjunction with long-term statin therapy, will improve the lipid profile by significantly raising the level of HDLC, with fewer side effects than traditional doses of niacin.
Methods:
Fifty patients undergoing stable statin therapy for 3 months were blindly randomized to receive either placebo or niacin 50 mg administered by mouth 2 times daily for 3 months. Patients with diabetes and active smokers were excluded. Each patient completed a questionnaire regarding current medical problems, medications, and lifestyle before and after the therapy. Patients were questioned about any possible side effects that occurred during the medication trial. The primary end points were change in HDLC level and patient-reported side effects.
Results:
Thirty-nine patients completed the study. Very low-dose niacin added to statin therapy increased the mean HDLC, 2.1 mg/dL in niacin group (standard error of the mean, 0.767) versus -0.56 mg/dL for placebo group (standard error of the mean-.816, P =.0246 by analysis of variance). Five patients receiving niacin, versus 2 patients receiving placebo, had episodes of flushing. No major side effects were noted. No patients stopped the study medication as a result of side effects.
Conclusions:
The addition of very low-dose niacin to statin therapy increased HDLC cholesterol significantly, while avoiding the side effects that are associated with traditional doses of niacin therapy.
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