Oral Administration of Sustained Release Niacin Inhibits Platelet Aggregation

Author(s): Nicholas B. Norgard, Nicholas R. Bacon, Matthew Agosti

Journal Name: Current Clinical Pharmacology
Continued as Current Reviews in Clinical and Experimental Pharmacology

Volume 11 , Issue 1 , 2016


Background: Previous studies have suggested that niacin may have antiplatelet properties, however the effects of niacin on the platelet activity are not well defined.

Objective: The purpose of this trial was to investigate whether the oral administration of niacin inhibits platelet aggregation.

Method: This study was run in three segments measuring the inhibitory effect of niacin: 1) 3 mmol/L niacin in vitro, 2) one hour after 1-gram sustained-release (SR) niacin administration, 3) twelve hours after 2-gram SR niacin administration. Platelet aggregation was measured using the VerifyNow-Aspirin and whole blood impedance aggregometry.

Results: Preincubation with niacin resulted in a significant inhibition of platelet aggregation. Significant inhibition of platelet aggregation was found one hour following the oral administration of 1 gram of SR niacin while the oral administration of a 2 gram dose of SR niacin did not produce significant platelet inhibition when platelet aggregation was measured 12 hours after the dose.

Conclusion: Niacin has a small, direct effect on platelet aggregation. Niacin platelet inhibition is transient and may dissipate as it is converted into metabolites. The clinical significance is unknown.

Keywords: Niacin, pharmacology, pharmacodynamics, platelet aggregation.

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Article Details

Year: 2016
Published on: 13 December, 2015
Page: [43 - 46]
Pages: 4
DOI: 10.2174/1574884711666151214104315

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