How Nicotine Increases Heart Rate?

Through the intracardiac release of norepinephrine, nicotine induces a beta-adrenoceptor-mediated increase in heart rate and contractility, and an alpha-adrenoceptor-mediated increase in coronary vasomotor tone.

Why does nicotine make my heart beat faster?

Nicotine harms the insides of blood vessels and reduces the amount of oxygen the heart receives, making the heart beat faster and the damaged blood vessels work harder. This very short period of time allows your body to begin to repair itself.

How does nicotine affect the heart?

It can cause an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries (vessels that carry blood). Nicotine may also contribute to the hardening of the arterial walls, which in turn, may lead to a heart attack.