3.Sedative, hypnotic, or ant anxiety drugs
As these substances quell or depress the nervous system, they can cause death by respiratory arrest of the person who either uses these drugs inoverdose or who mixes one or more of these drugs with another nervous system depressant drug.
The addictive substance found in cigarettes, nicotine is actually one of the most addictive substances that exist. In fact, nicotine addiction is often compared to the intense addictiveness associated with opiates like heroin.
Commonly referred to as PCP, this drug can cause the user to feel extremely paranoid, become quite aggressive and to have an unusual amount of physical strength. This can make the individual quite dangerous to others.