Sentinel Niacin is a dietary supplement containing 60 capsules of Niacin (Vitamin B3). Niacin is an essential B vitamin that supports energy metabolism, nervous system function, and helps maintain healthy skin. The supplement comes in an amber-colored bottle with a safety seal for freshness. Niacin is a water-soluble vitamin that plays a crucial role in converting food into energy and maintaining proper nervous system function. It may help support healthy cholesterol levels when taken as directed. The supplement should be stored in a cool, dry place away from direct sunlight. As with any supplement, consult with a healthcare provider before use, especially if you experience flushing, which is a common side effect of niacin supplementation.