Niacin assists in the functioning of the digestive system, skin, and nerves. It is also important for the conversion of food to energy.
Niacin (also known as vitamin B3) is found in dairy products, poultry, fish, lean meats, nuts, and eggs. Legumes and enriched breads and cereals also supply some niacin.
Vitamin C is important for your skin, bones, and connective tissue. It promotes healing and helps the body absorb iron.