What food sources contain B vitamins (water-soluble)?

3. Vitamin B3 (niacin, niacinamide)

This is an important nutrient that helps the nervous system, digestive system, cardiovascular system and skin stay healthy. The body cannot synthesize enough of its needs, nor can it store them. Therefore, the body needs to use vitamin B3 from food every day, and if there is an excess, it will be excreted through urine.
The body needs vitamin B3 (niacin) for cells to grow and function properly. A deficiency of vitamin B3 can lead to a health problem called Pellagra, which causes diarrhea and intestinal disorders. The daily requirement is 0.55mg/1000Kcal.
Foods rich in vitamin B include: chicken, beef, tuna, salmon, milk, eggs, tomatoes, leafy vegetables, broccoli, carrots, tofu, lentils, nuts...

Source: https://nhandan.vn/vai-tro-cac-vitamin-nhom-b-hoa-tan-trong-nuoc-co-nhieu-trong-cac-nguon-thuc-pham-nao-post833762.html