What does cocaine do?
Cocaine powder (coke) is in a form that dissolves easily and so can be snorted through the nose. It is not easy to smoke the powder, unlike crack cocaine.
Coke can make users feel on top of the world, wide-awake, confident and on top of their game, but some people become over-confident on it, taking careless risks and some become paranoid and aggressive. Cocaine can raise the body’s temperature, make the heart beat faster and reduce feelings of hunger. After a big night on cocaine, it's not unusual for people to feel like they have the flu.
Crack is a highly addictive form of cocaine when smoked. It produces more intense but more short-lived effects than snorted coke, so it is easier to get addicted more quickly to it. However, the main effects and risks of crack inside the body are otherwise exactly the same as cocaine powder.