One vitamin that opens blood vessels and improves circulation
If you’re referring to the common headline “One vitamin that opens blood vessels and improves circulation,” it’s usually referring to niacin (vitamin B3). Niacin can cause vasodilation, producing the familiar “niacin flush” (warmth, redness, tingling) because it affects blood-vessel signaling. However, that doesn’t mean taking niacin is a safe or effective way to improve circulation …









