This list includes 3 Vitamins that start with N that start with N, from “Niacin” to “Nicotinic acid”. Niacin and nicotinic acid are names for forms of vitamin B3, important for energy metabolism and famously linked to the early 20th-century cure for pellagra.

Vitamins that start with N are vitamins whose accepted names begin with the letter N and that play specific roles in human nutrition. Niacin’s discovery as a pellagra treatment is a notable historical example that shows how one vitamin changed public health outcomes.

Below you’ll find the table with Vitamin, Benefit, Food sources, and RDI.

Vitamin: Lists each vitamin name and common synonyms so you can spot exact nutrients and their alternate terms quickly.

Benefit: Summarizes the main health effects in one or two sentences so you understand why the vitamin matters.

Food sources: Identifies three to five primary foods where you can obtain the vitamin, helping you plan meals and grocery lists.

RDI: Gives recommended daily intakes with age and gender caveats and an authoritative source for easy comparison.

Vitamins that start with N

NameCommon forms / synonymsRDI and sourcePrimary food sources (3–5)
NiacinNicotinic acid; Nicotinamide (niacinamide); Vitamin B316 mg NE (men 19+); 14 mg NE (women 19+) NIHChicken breast; Tuna; Beef liver; Peanuts; Salmon
Nicotinic acidNiacin; Vitamin B3; Nicotinic acid (niacin)16 mg NE (men 19+); 14 mg NE (women 19+) NIHChicken breast; Tuna; Beef liver; Peanuts; Salmon
NicotinamideNiacinamide; Niacin amide; Vitamin B316 mg NE (men 19+); 14 mg NE (women 19+) NIHChicken breast; Tuna; Beef liver; Peanuts; Salmon

Descriptions

Niacin
Essential B vitamin for energy metabolism, DNA repair, and nervous system health. Helps form NAD/NADP coenzymes and supports healthy skin and digestion.
Nicotinic acid
A primary form of vitamin B3 involved in NAD/NADP production; at higher prescription doses it lowers LDL and raises HDL cholesterol but may cause flushing.
Nicotinamide
The amide form of vitamin B3 that supports cellular energy metabolism and DNA repair; used therapeutically without the flushing seen with nicotinic acid.
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