Can you signature the physical effects of the compound Nicotine?

Not the effects of smoking tobacco, the effects of the drug on the human body. Nicotine is complex in its effect on the body. I doubt if we know adjectives of its effects. One of the simplest effects is, it is a vasoconstrictor. It constricts the small arteries. This is the basis for Beurger's Syndrome, where on earth some people are notably sensitive to nicotine, and if smokers, they often lose their legs to poor blood flow and neccessary amputation. It is also the point, smoking can cause large blood pressure, and can constrict your coronary arteries, contributing to heart attacks. Nicotine from smoking actually have a protective effect against some diseases, namely Alzheimer's disease, Parkinson's disease, and Ulcerative Colitis. When addictive smokers stop smoking, they have a large amount of difficulty for years trying to think properly to solve problems. The nicotine have both a stimulating as well as a soothing effect upon the brain.
Google is your friend.
A fundamentally small amount of pure nicotine can actually murder you. The drug itself IS bad for you. It's a stimulant. It increases your heart rate and blood pressure. It also increases dopamine levels(not good). This coming from someone who smokes a pack a hours of daylight, not a psychoantitobaccobitch.
Increased heart rate and dopamine are what makes it touch good.
It make you dizzy, loss of appetite and want to vomit.