What does nitroglycerin do in the body?

Dilates blood vessel. It dilates blood vessels temporarily. If it dilates coronary ateries it can stop an episode of chest pain. Jf it dilates arteries in the brain it can cause a headache. It can teporarily lower blood pressure.

Related Questions

What does nitroglycerin do to the body?

Relax blood vessels. In the heart that can increase blood flow to stop an angina (chest pain) episode, but it also can produce side effects of low blood pressure (so take it sitting down) or headache. Read more...