Niacin, also known as vitamin B3, is an essential nutrient. It is found in many foods, including meats, fish, nuts, and seeds. Niacin is important for many bodily functions, including the metabolism of fats and sugars, the production of hormones, and the maintenance of healthy skin and nerves.

Niacin supplements are available in many forms, including tablets, capsules, powders, and liquids. They are typically taken in divided doses throughout the day. The recommended daily allowance of niacin is 14 mg for adults.

Niacin supplements can cause side effects, including flushing, itching, and nausea. High doses of niacin may cause liver damage. People with liver disease, diabetes, gout, or peptic ulcers should not take niacin supplements.

The following are six of the best niacin supplements available on Amazon.com.

1. Niacinamide 500mg Capsules from NOW Foods

NOW Foods Niacinamide 500mg Capsules are vegetarian, non-GMO, and gluten-free. They are also free of artificial colors, flavors, and preservatives. Each capsule contains 500mg of niacinamide. The recommended dose is one capsule daily, preferably with a meal.

2. Niacinamide Vitamin B3 500mg from Jarrow Formulas

Jarrow Formulas Niacinamide Vitamin B3 500mg is a non-GMO supplement that is also gluten-free. Each capsule contains 500mg of niacinamide. The recommended dose is one capsule daily, preferably with a meal.

3. Niacinamide Vitamin B3 500mg from Nature’s Bounty

Nature’s Bounty Niacinamide Vitamin B3 500mg is a non-GMO supplement that is also gluten-free. Each capsule contains 500mg of niacinamide. The recommended dose is one capsule daily, preferably with a meal.

4. Niacinamide Vitamin B3 500mg from Solgar

Solgar Niacinamide Vitamin B3 500mg is a non-GMO supplement that is also gluten-free. Each capsule contains 500mg of niacinamide. The recommended dose is one capsule daily, preferably with a meal.

5. Niacinamide Vitamin B3 500mg from Vitacost

Vitacost Niacinamide Vitamin B3 500mg is a non-GMO supplement that is also gluten-free. Each capsule contains 500mg of niacinamide. The recommended dose is one capsule daily, preferably with a meal.

6. Niacinamide Vitamin B3 500mg from NOW Foods

NOW Foods Niacinamide Vitamin B3 500mg is a non-GMO supplement that is also gluten-free. Each capsule contains 500mg of niacinamide. The recommended dose is one capsule daily, preferably with a meal.