The best vitamin to help with poor circulation in legs and feet.

People with poor circulation often have narrowed or stiff blood vessels. By widening these blood vessels, niacin allows blood to flow more freely, reducing the risk of blood clots, swelling, and numbness in the lower extremities. Some patients even report a “niacin flush”—a temporary warm or tingling sensation—as blood flow increases, particularly in the extremities.

Other useful vitamins

Although vitamin B3 is particularly effective, other vitamins also promote blood circulation:

• Vitamin E is an antioxidant that helps prevent blood clots and stimulates red blood cell production. It promotes smooth circulation and can relieve leg cramps caused by poor circulation.
• Vitamin C stimulates collagen production, which strengthens blood vessel walls. It also reduces inflammation, helping keep arteries flexible and open.
• Vitamin D can help prevent stiffness of the arteries and regulate blood pressure, which indirectly improves circulation in the legs and feet.
• Vitamin B12 helps produce red blood cells. A deficiency can cause anemia, which reduces oxygen delivery to tissues and contributes to poor circulation.

Best sources and supplements