Healthvit Nianeed-500 Niacinamide 500mg 60 Tablets Healthvit Nianeed 500 Niacinamide 500mg 60 Tablets . It is water soluble, meaning itÆs 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.Niacin is used for high cholesterol. It is also used along with other treatments for circulation problems, migraine headache, dizziness, and to reduce the diarrhea associated with cholera. Niacin is also used for preventing positive urine drug screens in people who take illegal drugs. Niacin or niacin-amide is used for preventing vitamin B3 deficiency and related conditions such as pellagra. Each of these forms of vitamin B3 is used for schizophrenia, hallucinations due to drugs, Alzheimer’s disease and age-related loss of thinking skills, chronic brain syndrome, depression, motion sickness, alcohol dependence, and fluid collection (edema). Some people use niacin or niacin-amide for acne, leprosy, attention deficit-hyperactivity disorder (ADHD), memory loss, arthritis, preventing premenstrual headache, improving digestion, protecting against toxins and pollutants, reducing the effects of aging, lowering blood pressure, improving circulation, promoting relaxation, improving orgasm, and preventing cataracts. Niacinamide is applied to the skin for treating a skin condition called inflammatory acne vulgaris.