Sentinel Niacin is a dietary supplement containing 400mg of Niacin (Vitamin B3) per capsule, with 60 capsules per bottle. Niacin is an essential B vitamin that supports energy metabolism, nervous system function, and helps maintain healthy skin and blood cells. Niacin, also known as Vitamin B3, is a water-soluble vitamin that plays a vital role in converting food into energy and maintaining proper cellular function. The 400mg dosage is considered a therapeutic amount that may help support cardiovascular health. The supplement comes in an amber glass bottle with a safety seal to protect the capsules from light and moisture. As with any supplement containing Niacin, users may experience a temporary warming sensation or flushing of the skin, which is a normal reaction. It's recommended to consult with a healthcare provider before starting this supplement, especially at therapeutic doses.