At first you feel pleasure, increased energy, and enhanced self-esteem. You also experience decreased anxiety and social inhibitions. In addition, cocaine influences sexual behavior. In small doses cocaine increases sexual arousal and makes orgasms and erections easier. In large doses cocaine intensifies aggressive sexual fantasies but decreases sexual performance.
Some people feel increased sexual desire but are less able to achieve erection and orgasm.
Before long, however, cocaine prevents the brain from storing chemicals that create these good feelings. Because of the lack of these chemicals, you feel depressed. As a result, you develop a craving for more cocaine and the good feelings it produces. As the addiction progresses, you tend to withdraw from friends and spend more time with cocaine users. Later, you may lose your job and become isolated from everyone.