Nutrient

Niacin

Established research area

A water-soluble B vitamin (B3) involved in energy metabolism and normal skin, nerve, and digestive function. Found in poultry, fish, peanuts, and whole grains.

Commonly noted

Commonly noted: Niacin (vitamin B3) is a water-soluble vitamin the body uses to turn food into energy and to support normal skin, nerve, and digestive function; poultry, fish, peanuts, and whole grains are common sources.
Low intake: Very low niacin intake over time is commonly discussed in relation to skin, digestive, and mood changes (historically known as pellagra).
Higher intake: Very high niacin from supplements is commonly discussed in relation to skin flushing and, at large amounts, digestive upset; the commonly cited upper intake level for adults is 35 mg a day from supplements and fortified foods.

Source: NIH ODS

Reference intakes

General reference figures for a typical adult — not a personal target or a claim of need.

rda · adult_female14 mgDRI/NASEM
rda · adult_male16 mgDRI/NASEM
ul · adult35 mgDRI/NASEM

Commonly found in

Worth knowing

Very high niacin from supplements is commonly discussed in relation to skin flushing; the upper intake level applies to supplemental and fortified sources.

Feelments is for personal tracking and general wellness education. It does not provide medical advice, diagnosis, or treatment.