Educational guide · English
Niacin (Vitamin B3): Basics
Understand the nutrient, food sources and why high-dose supplements deserve caution.
What is niacin?
Niacin is a water-soluble B vitamin involved in normal energy metabolism.
Food sources
Foods including poultry, fish, meat, legumes and fortified grains can provide niacin.
Names and label forms
Labels may use niacin or distinguish different forms. Check the listed amount and local reference intake.
High doses are not routine wellness
High-dose niacin can cause adverse effects and should not be self-prescribed to manage cholesterol or other health conditions.
Sources and further reading
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Find dietary sources of magnesium and learn why supplement amount and form are separate questions.
Explore food-first protein choices and what to look for when comparing protein product labels.
Important information
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