Niacinamide, also known as nicotinamide, is a form of vitamin B3 that can provide a variety of health benefits when taken as a supplement. It can help relieve the discomforts of arthritis and asthma . People with diabetes may benefit from taking it, and it is even thought to help prevent the onset of type I diabetes. Another of the potential benefits of niacinamide is reduction of anxiety, depression, and other psychological issues, and it may also help delay the onset of Alzheimer's disease and Parkinson's disease. Skin conditions like acne and rosacea , as well as the effects of aging like wrinkles , may improve with the use of niacinamide.