Nutricost Niacin powder uses only high quality Niacin (commonly known as Vitamin B3). Nutricost strives to provide the best supplements at the best prices. Nutricost Niacin Unflavored 8.9 oz (250 g) is a pure vitamin B3 supplement powder that supports energy metabolism and general wellness. It is unflavored, gluten-free, non-GMO, and third-party tested. This pure nicotinic acid form often causes a temporary, harmless skin reddening known as a "niacin flush".250 Grams of Pure Vitamin B3 (Niacin) Powder Per BottleWarning: Will Likely Cause "Niacin Flush." For Non-Flush, try NiacinamideConsuming Niacin On An Empty Stomach May Increase Flush ReactionNon-GMO, Gluten Free, 3rd Party TestedMade in A GMP Compliant, FDA Registered Facility

• Niacin flush: Expect a temporary tingling, itching, or red skin rash.
• Stomach sensitivity: Do not take on an empty stomach, as it worsens the flush effect.
• Alternative: If you dislike the flushing reaction, consider non-flush niacinamide instead. 

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