Niacin (B3)
vitamin Unit: mg
Niacin (vitamin B3) is the precursor to NAD+ and NADP+, coenzymes involved in more than 400 enzymatic reactions — predominantly energy metabolism and DNA repair. At pharmacological doses (well above dietary levels), niacin raises HDL cholesterol and reduces triglycerides. The RDA is 14–16 mg niacin equivalents per day. Meat, fish, fortified grains, and peanuts are leading sources.
Reference Daily Intake · per 100g
USDA/NIH DRI · National Academies
Top 20 Foods by Niacin (B3)
See all 7254 foods →Reference Daily Intake
16 mg
= 100% RDA
| # | Food | per 100g | % RDA |
|---|---|---|---|
| 1 | Yeast Extract Spread | 127.5 mg | 797% |
| 2 | Ralston Enriched Wheat Bran Flakes | 90.6 mg | 566% |
| 3 | Low Calorie Fruit-Flavored Drink Powder with Vitamin C | 80.0 mg | 500% |
| 4 | Low Calorie Orange-Flavor Breakfast Drink Powder | 80.0 mg | 500% |
| 5 | Mars Snickers Marathon Double Chocolate Nut Bar | 45.2 mg | 283% |
| 6 | Mars Snickers Marathon Honey Nut Oat Bar | 45.2 mg | 283% |
| 7 | Mars Snickers Marathon Energy Bar | 45.2 mg | 283% |
| 8 | Active Dry Baker's Yeast | 40.2 mg | 251% |
| 9 | Slim-Fast Shake Mix Powder (3-2-1 Plan) | 38.5 mg | 240% |
| 10 | Slim-Fast High Protein Whey Shake Mix Powder | 38.4 mg | 240% |
| 11 | Luna Bar Nutz Over Chocolate | 37.1 mg | 232% |
| 12 | Mars Snickers Marathon Chewy Chocolate Peanut Bar | 36.4 mg | 227% |
| 13 | Mars Snickers Marathon Multigrain Crunch Bar | 36.4 mg | 227% |
| 14 | Oatmeal Baby Cereal with Honey | 36.3 mg | 227% |
| 15 | Puffed Rice Cereal, Fortified | 35.3 mg | 221% |
| 16 | Puffed Wheat Cereal, Fortified | 35.3 mg | 221% |
| 17 | Crude Rice Bran | 34.0 mg | 212% |
| 18 | Power Bar Chocolate | 32.6 mg | 204% |
| 19 | Malt-O-Meal Corn Bursts | 32.3 mg | 202% |
| 20 | Earth's Best Organic Whole Grain Rice Cereal | 31.2 mg | 195% |