Man has been using chemicals for as long as he has been a manufacturer. Primitive man pressed dyes from barrier and poisons from roots, the Greek could make medicines from mineral ores.
Eventually people learned how to improve and change the substances that existed in nature and even how to make up new ones from their components.
When we are talking about drugs, we have to distinguish between drugs which are used as medicines and drugs which change your personality.
A drug is a chemical which people take initially for pleasure or benefit. It is a chemical which has the power to change one’s state of mind or mood and on which the user can become dependent.
Most drugs can be taken either legally or illegally, according to whether they have been prescribed by a doctor. However, others like for example alcohol or cigarettes are largely accepted by society.
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