Weruva Cats in the Kitchen Variety Pack Grain-Free Cat Food Pouches, 3-oz case of 12
Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B3, an essential human nutrient. It has the formula C 6H 5NO 2 and belongs to the group of the pyridinecarboxylic acid. Niacin is obtained in the diet from a variety of whole and processed foods, with highest contents in fortified packaged foods, tuna, salmon, some vegetable and other animal sources.