Dependence on cocaine means that you have a strong emotional, psychological, and sometimes physical need to take the drug. It is reflected in such things as taking more of the drug over longer periods than you intend or having the use of the drug interfere with the rest of your life.
Cocaine is a drug made from the leaves of the coca plant, which grows in South America.
It is a stimulant, which means it causes euphoria, increased physical activity, sleeplessness, and increased energy. It also raises the heart rate and blood pressure and causes more rapid breathing. In very high doses, seizures may occur. Crack, a less expensive form of cocaine, has recently become available, making cocaine abuse a widespread problem. Pregnant women using cocaine are at high risk of miscarriage.