Have you ever wondered whether a vitamin can help your blood vessels relax and improve circulation?
One vitamin often mentioned in connection with blood-vessel dilation is vitamin B3, also known as niacin. Niacin can cause blood vessels near the skin to widen, producing the familiar “niacin flush”—a temporary sensation of warmth, redness, itching, or tingling.
But there is an important distinction: niacin is not a general-purpose treatment for poor circulation, and taking high-dose supplements simply to “open your blood vessels” is not recommended.
What Is Vitamin B3?
Vitamin B3 is an essential water-soluble vitamin that comes in several forms, including niacin (nicotinic acid) and nicotinamide (niacinamide).
Your body needs vitamin B3 to help:
- Convert food into energy
- Maintain normal cellular function
- Support the nervous system
- Maintain healthy skin
- Support normal metabolism
The body can also produce small amounts of niacin from the amino acid tryptophan.
How Can Niacin Affect Blood Vessels?
One of the most noticeable effects of nicotinic acid is vasodilation.
When this happens, small blood vessels close to the skin expand, increasing blood flow to the skin. This can cause temporary flushing, warmth, and redness, particularly on the face, neck, chest, and arms.
This effect is one reason niacin has sometimes been described online as a vitamin that “opens the blood vessels.”
However, a temporary flushing response is not the same thing as treating blocked arteries or improving circulation throughout the body.
Can Niacin Treat Poor Circulation?
See more on the next page