Drugs taking became more compulsory for some of them, this will results in the brain functioning and also effects on their behavior. For many people, drug addiction became chronic, with higher condition to a former even after long periods of act of abstaining.

Taking drugs not under a doctor's prescription is became a very serious in many countries. Drugs are classified under the several categories and the same drug will fall into more than one category. Example:- alcohol can be socially agreed drug and it can also be stopped.

Drugs are classified into

1. Stimulant Drugs
This will stimulate the central nervous system for example. Cocaine and amphetamines. Where are Amphetamines are used to oppose depression, prevent the fatigue (which is physical/mental exhaustion which will cause by a stress) and counteract hunger in the patients who are dieting.

2. Depressant drugs
Barbiturates, this is an example which is used as sleeping pills. These are rules given to overcome insomnia and treat epilepsy.

3. Hallucinogenic drugs
cannabis, this is also called as marijuana and LSD. By this the main cause is the person will face illusions, hallucinations.

4. Opiates
opium, heroin and morphine, this is narcotic drugs and they are used because they relieve pain and induce sleep. Heroin abuse is the one of the biggest addiction problems in so many countries of the world. Heroin is more powerful than morphine. By this it dulls the senses, and giving the sense of well being. It decreases the hunger, tensions and makes the person sleepy. This results to the large usage around the world. And some of the effects of illegal drugs will experience from taking the prescription drugs. This is mainly common with taking strong pain killers. It is all just easy way for a person to become addicted to "legal" prescription drugs to a illegal street drugs.

Drugs will change the way of the body and also the brain functions. Sometimes these results are many in the case of prescription medications which are used to cure various conditions and diseases. These results are exceptionally large and will cause great harm to your body and well-being people also. But one thing will remain same; any substance which is addictive has the capable of changing your life to good and for bad.

It is important that when you are looking for different neither types of drugs, not to turn into that nor granted they are always safe, but it is important you are addicted or not. If anyone addicts to drugs, serious effects and causes that will results from the use of almost all drugs and also from prescription medications.