Vitamin B3 Everyday Essentials Potency - Purity - Pride Vegetarian High Potency Vitamin Supplement Supports healthy lipid metabolism and circulation. What is Vitamin B3? Vitamin B3 is one of eight B vitamins—vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B12 (cyanocabalamin) and folic acid—often referred to as B complex. Vitamin B3 is water soluble, meaning it’s not stored in the body and must be replaced daily. It can be found in many foods, including meat, fish, milk, eggs, green vegetables, cereal grains and yeast. Niacinamide and niacin are different forms of vitamin B3. Niacinamide can be made from niacin in the body. This occurs when niacin is taken in amounts greater than what is needed by the body. What are the key benefits of Vitacost® Niacinamide - Vitamin B3? Vitamin B3 (as niacinamide or niacin) is used by the body for energy production.