Drug definition in pharmacy and Chemical Materials
Drugs are substances that change a person's mental or physical state. They can affect the way your brain works, how you feel and behave, your understanding and your senses. This makes them unpredictable and dangerous, especially for young people. The effects of drugs are different for each person and drug.
Drugs are chemicals or substances that change the way our bodies work. Some are medicines that help people when doctors prescribe them. Many have no medical use or benefits. When taken (usually by swallowing, inhaling, or injecting), abused drugs find their way into the bloodstream.
Drugs can be categorised by the way in which they affect our bodies: depressants – slow down the function of the central nervous system. hallucinogens – affect your senses and change the way you see, hear, taste, smell or feel things.
Chemicals are used in the home every day. They include cleaning fluids, plant food, paint and fuels. In pharmacology, a drug is a chemical substance, typically of known structure, which, when administered to a living organism, produces a biological effect. A pharmaceutical drug, also called a medication or medicine, is a chemical substance used to treat, cure, prevent, or diagnose a disease or to promote well-being.
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