Cocaine

Cocaine is a potent central nervous system stimulant. Its effects can last from 20 minutes to several hours, depending upon the dosage of cocaine taken, purity, and method of administration.

The initial signs of stimulation are hyperactivity, restlessness, increased blood pressure, increased heart rate and euphoria.

The euphoria is sometimes followed by feelings of discomfort and depression and a craving to experience the drug again. Sexual interest and pleasure can be amplified. Cocaine's side effects can include twitching, paranoia, and impotence, which usually increases with frequent usage.

With excessive dosage Cocaine  use can produce itching, tachycardia, hallucinations, and paranoid delusions.

Cocaine, Cocaine - a narcotic (alkaloid) extracted from coca leaves; used as a surface anesthetic or taken for pleasure; can become powerfully addictive.

Cocaine overdose causes tachyarrhythmias and a marked elevation of blood pressure. These can be life-threatening, especially if the user has existing cardiac problems.