Value Per Nutrient Food 4.46 mg 100 grams Niacin Mushrooms, white, cooked, boiled, drained, with salt 4.46 mg 100 grams Niacin Mushrooms, white, cooked, boiled, drained, without salt 4.45 mg 100 grams Niacin McDONALD'S, QUARTER POUNDER 4.45 mg 100 grams Niacin KENTUCKY FRIED CHICKEN, Fried Chicken, EXTRA CRISPY, Thigh, meat and skin with breading 4.45 mg 100 grams Niacin Beef, rib, large end (ribs 6-9), separable lean only, trimmed to 0" fat, select, cooked, roasted 4.45 mg 100 grams Niacin Beef, rib, large end (ribs 6-9), separable lean only, trimmed to 0" fat, all grades, cooked, roasted 4.45 mg 100 grams Niacin Beef, variety meats and by-products, pancreas, raw 4.45 mg 100 grams Niacin Beef, rib, large end (ribs 6-9), separable lean only, trimmed to 0" fat, choice, cooked, roasted