Can nitric oxide hurt your heart?

No. It's the precursor molecule of Nitroglycerin which is used for people who are having, or at risk of having, a heart attack. It's a potent vessel dilator and improves circulation to tissues that are starved for blood and oxygen. Don't confuse it with nitrogen dioxide with is a nasty pollutant or with nitrous oxide (laughing gas, an anesthetic).

Related Questions

Can you tell me about nitric oxide and prevention of heart attack?

It is a vasodilator. Active form of nitroglycerine tablets taken by mouth id eventually converted to nitric oxide that is the potent dilator of blood vessels to release angina. Read more...