Other Definitions
niacin (enc)
Niacin
Noun
1.
niacin
- a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract
nicotinic acid
B complex
,
B vitamin
,
B-complex vitamin
,
vitamin B
,
vitamin B complex
,
B
- originally thought to be a single vitamin but now separated into several B vitamins
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