21st Century, Prolonged Release Niacin, 500 mg, 100 Tablets

21st Century, Prolonged Release Niacin, 500 mg, 100 Tablets provides niacin, or vitamin B3, a precursor for the coenzymes NAD and NADP. These coenzymes participate in cellular energy metabolism, redox reactions, fatty-acid metabolism, and many biosynthetic pathways. Supplemental niacin at doses well above normal nutritional requirements can produce physiological effects that differ from those of ordinary dietary intake.

This exact variant is labeled with 500 mg, a labeled serving of 1 Tablet, 100 servings per container. Niacin can cause flushing and other dose-related effects, and prolonged high-dose use warrants attention to tolerability, other medications, and relevant health conditions. Prolonged-release formulations alter the timing of exposure but do not remove the need to follow the labeled dose.

Adults take 1 tablet daily with a meal, or as directed by a healthcare provider.

Niacin can cause flushing, warmth, itching, or gastrointestinal discomfort. Higher-dose or prolonged-release niacin should be used with healthcare guidance, particularly with liver disease, diabetes, gout, or lipid-lowering therapy. Consult a healthcare provider before use if pregnant or nursing, taking medications, managing a medical condition, or planning a medical procedure. Stop use if an adverse reaction occurs. Keep out of reach of children. Do not use if the safety seal is broken; store as directed on the label.