THORNE – Niacinamide – Non-Flushing Form of Vitamin B3 – Supports Skin Health & Provides Cellular Protection* – Niacin Supplement – Third-Party Certified – Gluten, Dairy & Soy-Free – 180 Capsules

Customers find this vitamin B3 supplement effective for joint pain relief and cholesterol management, while also improving skin and acne conditions. Moreover, the product receives positive feedback for its non-flushing formula, clean ingredients without unnecessary additives, and good value for money. Additionally, customers report improved sleep quality, and while some experience no side effects, others mention headaches as a side effect.