When it comes to keeping your blood flowing smoothly, one vitamin consistently stands out: vitamin B3, also known as niacin. This powerful nutrient plays a key role in widening blood vessels through a process called vasodilation, which increases circulation and allows oxygen-rich blood to reach your muscles, organs, and brain more efficiently. Many people first notice the benefits in their hands and feet, especially if they struggle with cold extremities or poor peripheral circulation.
Niacin supports the body by relaxing the smooth muscles inside blood vessel walls, helping them open wider and function more efficiently. This improved flow can deliver a noticeable boost in energy, as cells receive more oxygen and nutrients. Some people even experience what’s known as the “niacin flush,” a warm, tingling sensation caused by increased blood flow to the skin — a temporary and harmless sign that the vitamin is doing its job
