Q.7 How drugs are classified? Describe the usage of important medicinal drugs? OR Write any three medicinal drugs. Explain in detail.
Answer:
Drugs are classified on the basis of their chemical properties and modes of action.
1. Analgesics ,
(Pain killers)
Reduce pain e.g. aspirin, paracetamol etc.
2. Antibiotics
Inhibit or kill bacteria and treat bacterial infections e.g. tetracycline, cephalosporin etc.
3. Sedatives
Induce sedation by reducing irritability or excitement e:g. Diazepam.
4. Vaccines
Vaccines are used to develop immunity against viral and bacterial infections e.g. vaccines against small pox, whooping cough, hepatitis B etc.
5. Antiseptics
Reduce the possibility of infections on skin.
6. Antibiotics
Inhibit or kill bacteria within or on the body. Sir Alexander Fleming discovered the antibiotic penicillin from the fungus penicillium notatum.
7. Disinfectants
Destroys microorganisms found on non-living objects. Joseph Lister introduced carbolic acid to sterilize surgical instruments and to clean wounds.
