Before thinking to start using cocaine you should ask yourself how addictive is cocaine and what problems can cause to you. A cocaine addict will continue to use the drug trying to recreate the sensation of the first experience. Also, because the experience is not long-lasting, he may use repeatedly to keep the high going.
The [...]

The symptoms of an amphetamine overdose are rapid heartbeat, restlessness and shaking. The person may also become paranoid, confused, delusional or have seizures. Unfortunately, the addicts will never experience the sensation from the first time using amphetamines, and they will try to reach it by increasing the dose.
Increased dose of amphetamines leads to addiction and [...]