Niacin (vitamin B3) in high doses can cause heat and redness on the skin. Bonusan Niacin Flush-Free does not cause this reaction. It also contains zinc and vitamin B6 as adjuvants. Vitamin B3 contributes to normal energy-yielding metabolism and normal psychological function, and helps reduce tiredness and fatigue. Bonusan Niacin Flush-Free is a high-dose product that also contains zinc and vitamin B6. Zinc contributes to normal cognitive function, and vitamin B6 contributes to normal psychological function. Niacin, also known as vitamin B3, is one of the eight B vitamins. For some people, using a niacin supplement causes redness and burning of the skin. This is called a niacin flush. Bonusan Niacin Flush-Free does not cause this reaction. Vitamin B3 supplement without the unpleasant niacin flush. It also contains zinc and vitamin B6 as adjuvants. Vitamin B3 contributes to normal energy-yielding metabolism. It is recommended, unless otherwise advised, to take 2 to 3 capsules daily immediately after meals. Not suitable for children under 1 year. Do not use in liver disorders. A varied and balanced diet and a healthy lifestyle are necessary. Food supplements should not be used as a substitute for a balanced diet. Store in a dry place and at room temperature.