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Nutrient Food Sources
Vitamin B3 (niacin) – Best Food Sources
| Food Sources of vitamin B3 | Amount (mg/100g) |
| Almonds | 3.1 |
| Apricots | 2.3 |
| Beef | 5 |
| Brown rice | 5.3 |
| Calf's liver | 14 |
| Cashew nuts | 1.3 |
| Chicken | 15 |
| Chilli powder | 8 |
| Cod | 2.4 |
| Dates | 1.8 |
| Haddock | 4.4 |
| Halibut | 6 |
| Lamb | 5 |
| Paprika | 15 |
| Passion fruit | 1.5 |
| Peanuts | 14 |
| Salmon | 7 |
| Sesame seeds | 5 |
| Spinach | 1.2 |
| Sunflower seeds | 4.1 |
| Tomato | 1 |
| Tuna | 14.4 |
| Turkey | 14 |
| Venison | 5.5 |
| Wheat bran | 30 |
| Yeast extract | 64 |
Niacin is essential for the production of energy, is involved in blood sugar regulation, antioxidant mechanisms, detoxification and in regulation of cholesterol levels. It works in conjunction with the other B vitamins. It can be manufactured in the body from tryptophan, but dietary sources are also important.
Source: McCance and Widdowson's The Composition of Foods (6th Edition)