Solgar B3 (Niacin) Is niacin also vitamin B3? Solgar Vitamin B3 Tabletsare made of up of the essential B3 vitamin, also known as niacin. What is niacin tablets used for? This specific vitamin may support you Body with several processes, ranging from managing levels of Energy & Vitality, to Skin health and a balanced Brain & Mind. Niacin 100 mg benefits: Pack of 100 tablets. Vegan. Kosher. Vegetarian. Gluten free. Made in the USA. With skin health properties. A rich source of vitamin B3 (niacin). May support energy levels & reduce tiredness + fatigue. What does niacin B3 prevent? Solgar Niacin (Vitamin B3) 100 mg Tablets may be useful for the prevention and treatment of a vitamin B3 deficiency, such as pellagra. It is to be taken once a day and should contribute to normal energy-yielding metabolism, the normal functions of the nervous system and normal psychological function.