Types of drugs. Drugs under international control include amphetamine-type stimulants, coca/cocaine, cannabis, hallucinogens, opiates and sedative hypnotics.Countries have decided to control these drugs because they pose a threat to health. While some of the physical effects of drugs might sound nice, they do not last long.Many people get depressed and lonely afterwards and start feeling sick. Also, it is common for people who use drugs to seem confused, have red eyes, sweat a lot and not care about their physical appearance.hile some of the physical effects of drugs might sound nice, they do not last long. Many people get depressed and lonely afterwards and start feeling sick. Also, it is common for people who use drugs to seem confused, have red eyes, sweat a lot and not care about their physical appearance.