What does this supplement support? Swanson's Niacinamide supplement is a versatile form of vitamin B3 supporting joint health, heart health, and carbohydrate metabolism to aid energy production — all with natural ingredients you can trust. How much niacinamide is in each capsule? Our cardiovascular support supplement delivers 250 mg of niacinamide in each easy-to-swallow capsule, specially created for safe and effective wellness support. Is this a natural formula? Yes — this full-spectrum formula features plant-based ingredients without unnecessary processing for a clean, pure supplement. How is this supplement made? For over 5 decades, Swanson has delivered science-backed health products worldwide. Each wellness supplement is made in GMP-certified facilities, and our purity and potency testing includes independent third-party labs. Can I trust the quality? Yes — for over 5 decades, Swanson Health has delivered science-backed health products worldwide from Fargo, ND. Our facilities are GMP certified, and clinical research, scientific consensus, and usage traditions guide our innovation. Swanson Niacinamide is not just another niacin! Although they're closely related and their names are similar, there are some big differences between niacinamide and regular niacin. Both play vital roles in carbohydrate metabolism, helping to supply the entire body with energy, but niacinamide also supports joint health and helps maintain blood sugar already within the normal range. Plus, niacinamide doesn't cause the "niacin flush" associated with ordinary niacin supplements.