: an acid C6H5NO2 of the vitamin B complex found widely in animals and plants and used especially against pellagra
Examples of niacin in a Sentence
Recent Examples on the Web
Researchers recommend that people should stop taking niacin supplements unless there is a medical need for them.
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Staff Author, Health, 14 Mar. 2024
Doran was surprised to learn that niacin could be involved in driving up the risk of heart disease.
—Linda Carroll, NBC News, 19 Feb. 2024
New research suggests that too much of the essential B vitamin niacin can contribute to cardiovascular disease.
—Staff Author, Health, 14 Mar. 2024
The research resulted in the discovery of a substance in some of the blood samples that is only made when there is excess niacin.
—Linda Carroll, NBC News, 19 Feb. 2024
Serious side effects are more common if between 2,000 to 6,000 milligrams of niacin is taken a day.
—Arianna Johnson, Forbes, 21 Feb. 2024
In addition, Yegorova highlights niacin (also known as vitamin B-3) for sometimes creating an odd side effect.
—Carina Woudenberg, Discover Magazine, 23 Jan. 2024
Pantothenic acid, also known as vitamin B5, helps to regulate oil production and prevent breakouts, while niacin (vitamin B3) promotes healthy blood flow and reduces inflammation.
—Amber Smith, Discover Magazine, 1 Aug. 2023
Natural Ingredients Every blood pressure supplement on our list uses natural ingredients like niacin, vitamin K2, Ashwagandha, hawthorn berry, garlic, amino acids, etc.
—Discover Magazine, 30 June 2023
Staff Author, Health, 14 Mar. 2024
Doran was surprised to learn that niacin could be involved in driving up the risk of heart disease.
—Linda Carroll, NBC News, 19 Feb. 2024
New research suggests that too much of the essential B vitamin niacin can contribute to cardiovascular disease.
—Staff Author, Health, 14 Mar. 2024
The research resulted in the discovery of a substance in some of the blood samples that is only made when there is excess niacin.
—Linda Carroll, NBC News, 19 Feb. 2024
Serious side effects are more common if between 2,000 to 6,000 milligrams of niacin is taken a day.
—Arianna Johnson, Forbes, 21 Feb. 2024
In addition, Yegorova highlights niacin (also known as vitamin B-3) for sometimes creating an odd side effect.
—Carina Woudenberg, Discover Magazine, 23 Jan. 2024
Pantothenic acid, also known as vitamin B5, helps to regulate oil production and prevent breakouts, while niacin (vitamin B3) promotes healthy blood flow and reduces inflammation.
—Amber Smith, Discover Magazine, 1 Aug. 2023
Natural Ingredients Every blood pressure supplement on our list uses natural ingredients like niacin, vitamin K2, Ashwagandha, hawthorn berry, garlic, amino acids, etc.
—Discover Magazine, 30 June 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'niacin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Niacin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niacin. Accessed 19 Apr. 2024.
Copy CitationKids Definition
niacin
noun
ni·a·cin
ˈnī-ə-sən 
: an acid of the vitamin B complex that is found widely in plants and animals and is used especially against pellagra
called also nicotinic acid
Medical Definition
niacin
noun
ni·a·cin
ˈnī-ə-sən
: a crystalline acid C6H5NO2 that is a member of the vitamin B complex occurring usually in the form of a complex of niacinamide in various animal and plant parts (as blood, liver, yeast, bran, and legumes) and is used especially to lower LDL and triglyceride levels in the blood and to treat pellagra
called also nicotinic acid
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