Niacin-Rich Foods That Support Energy and Focus

8. Beef and Liver

Beef is a naturally rich source of niacin, especially in lean cuts like sirloin, tenderloin, or ground beef. A single serving can provide more than half of your daily B3 needs, along with iron and high-quality protein.

Liver, though less commonly eaten, stands out as one of the most concentrated sources of niacin. Just a few ounces of cooked beef liver can supply several times the daily recommendation.

While not an everyday food for most people, liver can offer a serious nutritional boost when it’s included occasionally — especially for those with increased nutrient needs.