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Presented by :
Harshith .J.K
DRUGS
• Chemical substance that affects the
functioning of living things.
• Source of drugs
Natural drugs
Synthetic drugs
HISTORY OF DRUGS
Drug is derived from the French word
“drogue” which means ‘dry herb’
CLASIFFICATION OF DRUGS
• On the basis of their chemical structure
• On the basis of their therapeutic action
Drugs acting on the CNS
Drugs stimulating or blocking the peripheral
nervous system
Drugs acting on the cardiovascular haematopoietic
and renal systems
Chemotherapeutic drugs
Vitamins
Hormones
DRUGS ACTING ON THE CNS
• Non selective depressants
General anaesthetics
Sedatives & hypnotics
Narcotic analgesics
Antipyretic analgesics
Antirheumatic analgesics
• Selective modifiers of CNS
Anticonvulsants
Antitussives
Psychotherapeutic agents
Central intraneural blocking agents
• CNS stimulators
Analeptics
Psychomotor stimulants
Antidepressant drugs
ANTIPYRETIC ( ASPIRIN )
DRUGS STIMULATING OR BLOCKING
THE PERIPHERAL NERVOUS SYSTEM
• Cholinergic & anticholinergic agents
• Adrenergic stimulants, adrenergic blocking
agents and inhibitors of catechol amide
biosynthesis and metabolism
• Histamine and Antihistamine agents
• Local anaesthetics
LOCAL ANAESTHETICS ( ORTHOCAIN )
DRUGS ACTING ON THE
CARDIOVASCULAR HAEMATOPOIETIC AND
RENAL SYSTEMS
• This group includes drugs that affects cardiovascular
function as well as those that act on blood vessels and
the renal system. Cardiovascular agent include
cardiotonic, antiarrhythmic, antihypertensive,
vasodilator and hypocholestermic agents.
• Drugs acting on the blood are called haemological
agents. They are comprised of antianaemics,
coagulants, anticoagulants and plasma expanders.
• Agent that affect the renal system are called diuretics
CHEMOTHERAPEUTIC DRUGS
• Antiprotozoal agents
• Antimalarial agents
• Anthelmintic agents
• Antiseptic, Antifungal and Antibacterial agents
• Sulpha drugs
• Antibiotics
• Antiviral
• Antiulcer
ANTIPROTOZOAL ( DIODOQUIN )
ANTIMALARIAL ( CHLOROQUINE )
ANTHELMINTIC ( NICLOSAMIDE )
ANTIBACTERIAL ( CIPROFLOXACIN )
SULPHA DRUGS ( SULPHANILAMIDE )
ANTIBIOTIC ( PENICILLIN-G )
ANTIVIRAL ( IDOXURIDINE )
ANTI-ULCER ( OMEPRAZOLE )
VITAMINS
• Water soluble
Vitamins of group B and Vitamin C
• Fat soluble
Vitamins A, D, E and K
HORMONES
• Thyroid hormones and antithyroid drugs
• Pituitary and hypothalamic hormones
• Pancreas hormones and hypoglycaemic agents
• Sex hormones
• Adrenal cortex hormones
THANKYOU…

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Chemistry of drugs

  • 2. DRUGS • Chemical substance that affects the functioning of living things. • Source of drugs Natural drugs Synthetic drugs
  • 3. HISTORY OF DRUGS Drug is derived from the French word “drogue” which means ‘dry herb’
  • 4. CLASIFFICATION OF DRUGS • On the basis of their chemical structure • On the basis of their therapeutic action Drugs acting on the CNS Drugs stimulating or blocking the peripheral nervous system Drugs acting on the cardiovascular haematopoietic and renal systems Chemotherapeutic drugs Vitamins Hormones
  • 5. DRUGS ACTING ON THE CNS • Non selective depressants General anaesthetics Sedatives & hypnotics Narcotic analgesics Antipyretic analgesics Antirheumatic analgesics • Selective modifiers of CNS Anticonvulsants Antitussives Psychotherapeutic agents Central intraneural blocking agents • CNS stimulators Analeptics Psychomotor stimulants Antidepressant drugs
  • 7. DRUGS STIMULATING OR BLOCKING THE PERIPHERAL NERVOUS SYSTEM • Cholinergic & anticholinergic agents • Adrenergic stimulants, adrenergic blocking agents and inhibitors of catechol amide biosynthesis and metabolism • Histamine and Antihistamine agents • Local anaesthetics
  • 8. LOCAL ANAESTHETICS ( ORTHOCAIN )
  • 9. DRUGS ACTING ON THE CARDIOVASCULAR HAEMATOPOIETIC AND RENAL SYSTEMS • This group includes drugs that affects cardiovascular function as well as those that act on blood vessels and the renal system. Cardiovascular agent include cardiotonic, antiarrhythmic, antihypertensive, vasodilator and hypocholestermic agents. • Drugs acting on the blood are called haemological agents. They are comprised of antianaemics, coagulants, anticoagulants and plasma expanders. • Agent that affect the renal system are called diuretics
  • 10. CHEMOTHERAPEUTIC DRUGS • Antiprotozoal agents • Antimalarial agents • Anthelmintic agents • Antiseptic, Antifungal and Antibacterial agents • Sulpha drugs • Antibiotics • Antiviral • Antiulcer
  • 15. SULPHA DRUGS ( SULPHANILAMIDE )
  • 19. VITAMINS • Water soluble Vitamins of group B and Vitamin C • Fat soluble Vitamins A, D, E and K
  • 20. HORMONES • Thyroid hormones and antithyroid drugs • Pituitary and hypothalamic hormones • Pancreas hormones and hypoglycaemic agents • Sex hormones • Adrenal cortex hormones