What vitamins can open up blood vessels?

Vitamin B₃:

1. Vitamin B₃ strengthen blood vessels and prevent venous problems, or at least keep them away if they have already appeared.
2. Vitamin B₃ increases the function of blood vessels and reduce inflammation.
3. Vitamin B₃ also opens up blood vessels.

Vitamin D:

1. Vitamin D low levels lead to coronary artery diseases and high blood pressure.
2. Vitamin D improves the flow of blood by improving the lining of the blood vessels.

Thus, Vitamin B₃ and Vitamin D open up blood vessels.