CONCLUSION...

The conclusion, drug addiction is a serious problem among teenagers in Malaysia. There are many factors that influence them to drug addiction. So parents, community and goverment must co-operate to reduce the number of drug addict.

types of drug

Common Drug Types

There are many different types of drugs you should be aware of. Some are prescribed, others are known as club drugs, illicit or illegal substances, and some are called designers drugs. They include:

Antidepressants

Antidepressants are a prescription medication used to treat depression and mood disorders like obsessive-compulsive disorder, eating disorders and other anxiety problems. The problem is that some antidepressant drugs can actually carry serious side effects and when used in combination with alcohol or other depressant drugs, can actually make you more depressed. Likewise, discontinuing use suddenly can cause mild withdrawal symptoms. 

Barbiturates

There are many different types of barbiturates out there, many of which are prescription, and work by depressing the central nervous system. This can cause sedation and anesthesia. While used to treat seizure disorders, insomnia and other problems, they can be abused. Users often build up a tolerance to them, requiring larger doses to achieve the same effects. Overdosing occurs often in those abusing "downers."

Cannabis

Cannabis is also known as marijuana and has psychoactive effects. It is taken into the body in the form of smoke or vapor and can even be consumed and mixed into food or steeped in a tea. While the jury's still out on whether or not marijuana is addictive, it is often believed to act as the "gateway" to other more serious substances. 

Depressants

Depressants are a type of drug that works by reducing the function of the central nervous system. Drugs often included in this category are barbiturates and benzodiazepines. 

Hallucinogens

While hallucinogens have been around for years in ceremonies and rituals, they play a role in modern society as well. They work by producing sensory hallucinations in users involving any of the five senses. Common substances that fall within this category include LSD, PCP and Peyote. 

Inhalants

As their name would suggest, inhalants refer to a group of drugs that are inhaled in the form of a gas or solvent. Potential inhalants can be found just about anywhere and include common products like nail polish remover, gasoline, glue and aerosol cans. 

Narcotics

While the term "narcotics" is often used to refer to any illicit substance, it technically means a substance derived from opium (opiates) or its synthetic replacements. Examples of narcotics include cocaine, morphine and heroin, all of which are highly addictive. 

Steroids

Anabolic steroids are not the same as the kind used in medicine for the reduction of inflammation. Rather, these substances are used to build muscle mass and strength. They typically consist of male sex hormones and can be very damaging when used without a prescription.

Stimulants

Stimulants are a class of drugs that boost alertness and increase the activity of the central nervous system. Examples of this type of drug include amphetamines, methamphetamines, cocaine and nicotine, all of which are highly addictive.

Info from http://www.thegooddrugsguide.com: