1. General Pharmacological Principles
    2. 1. Introduction, Routes of Drug Administration
    2. Pharmacokinetics: Membrane Transport, Absorption and Distribution of Drugs
    3. Pharmacokinetics: Metabolism and Excretion of Drugs, Kinetics of Elimination
    4. Pharmacodynamics: Mechanism of Drug Action; Receptor Pharmacology
    5. Aspects of Pharmacotherapy, Clinical Pharmacology and Drug Development
    6. Adverse Drug Effects
  2. Drug Acting on Autonomic Nervous System
    3. 7. Cholinergic Transmission and Cholinergic Drugs
    8. Anticholinergic Drugs and Drugs Acting on Autonomic Ganglia
    9. Adrenergic Transmission and Adrenergic Drugs
    10. Antiadrenergic Drugs (Adrenergic Receptor Antagonists) and Drugs for Glaucoma
  3. Autacoids and Related Drugs
    4. 11. Histamine and Antihistaminics
    12. 5-Hydroxytryptamine, its Antagonists and Drug Therapy of Migraine
    13. Prostaglandins, Leukotrienes (Eicosanoids) and Platelet Activating Factor
    14. Nonsteroidal Antiinflammatory Drugs and Antipyretic-Analgesics
    15. Antirheumatoid and Antigout Drugs
  4. Respiratory System Drugs
    5. 16. Drugs for Cough and Bronchial Asthma
  5. Hormones and Related Drugs
    6. 17. Anterior Pituitary Hormones
    18. Thyroid Hormones and Thyroid Inhibitors
    19. Insulin, Oral Antidiabetic Drugs and Glucagon
    20. Corticosteroids
    21. Androgens and Related Drugs, Drugs for Erectile Dysfunction
    22. Estrogens, Progestins and Contraceptives
    23. Oxytocin and Other Drugs Acting on Uterus
    24. Hormones and Drugs affecting Calcium balance
  6. Drugs acting on Peripheral nervous system
    7. 25. Skeletal muscle relaxants
    26. Local anaesthetics
  7. Drugs acting on Central nervous system
    8. 27. General anaesthetics
    28. Ethyl and Methyl alcohols
    29. Sedative-Hypnotics
    30. Antiepileptic Drugs
    31. Antiparkinsonian Drugs
    32. Drugs used in Mental Illness: Antipsychotic and Antimanic drugs
    33. Drugs used in Mental Illness: Antidepressant and Antianxiety drugs
    34. Opioid analgesics and antagonists
    35. CNS stimulants and Cognitino enhancers
  8. Cardiovascular drugs
    9. 36. Drugs affecting Renin-Angiotensin system
    37. Nitric oxide and Vasoactive peptide signal molecules
    38. Cardiac glycosides and Drugs for Heart failure
    39. Antiarrhythmic drugs
    40. Antianginal and other Anti-ischaemic drugs
    41. Antihypertensive drugs
  9. Drugs acting on Kidney
    10. 42. Diuretics
    43. Antidiuretics
  10. Drugs affecting blood and Blood formation
    11. 44. Haematinics and Erythropoietin
    45. Drugs affecting Coagulation, Bleeding and Thrombosis
    46. Hypolipidaemic drugs
  11. Gastrointestinal drugs
    12. 47. Drugs for Pepric ulcer and gastroesophageal reflux disease
    48. Antiemetic, Prokinetic and Digestant drugs
    49. Drugs for Constipation and Diarrhoea
  12. Antimicrobial drugs
    13. 50. Antimicrobial drugs: General considerations
    51. Sulfonamides, Cotrimoxazole and Quinolones
    52. Beta-lactam antibiotics
    53. Tetracyclines and Chloramphenicol (Broad-spectrum antibiotics)
    54. Aminoglycosides antibiotics
    55. Macrolide, Lincosamide, Glycopeptide and Other antibacterial antibiotics; Urinary antiseptics
    56. Antitubercular Drugs
    57. Antileprotic Drugs
    58. Antifungal drugs
    59. Antiviral drugs (Non-retroviral)
    60. Antiviral drugs (Anti-retrovirus)
    61. Antimalarial drugs
    62. Antiamoebic and Other antiprotozoal drugs
    63. Antihelmintic drugs
  13. Chemotherapy of Neoplastic diseases
    14. 64. Anticancer drugs
  14. Miscellaneous drugs
    15. 65. Immunosuppressant drugs
    66. Drugs acting on Skin and Mucous membranes
    67. Antiseptics, Disinfectants and Ectoparasiticides
    68. Chelating agents
    69. Vitamins
    70. Vaccine, Antisera and Immunoglobulins
    71. Drug interactions
General Pharmacological Principles
3. Pharmacokinetics: Metabolism and Excretion of Drugs, Kinetics of Elimination
METABOLISM
Feature
Phase-I Metabolism
Phase-II Metabolism
Also known as
Functionalization reactions/ Non-synthetic reaction
Conjugation reactions/ Synthetic reaction
Main purpose
Introduce or expose functional groups (–OH, –NH₂, –SH)
Conjugate with endogenous compounds to increase solubility
Type of reactions
Oxidation, reduction, hydrolysis
Glucuronidation, sulfation, acetylation, methylation, etc.
Enzymes involved
Cytochrome P450 enzymes (CYP450)
Transferase enzymes (e.g., UGT, SULT, NAT)
Polarity of products
Slightly polar, may not be excretable
Highly polar, easily excretable
Energy requirement
Generally do not require energy
Often require energy (e.g., from cofactors like UDPGA)
Drug activation/inactivation
May activate prodrugs or form reactive intermediates
Usually leads to drug inactivation and detoxification
Examples
Hydroxylation of benzene, hydrolysis of esters
Glucuronidation of morphine, sulfation of acetaminophen
EXCRETION
▢ Plasma Half-life (t½):
❖ Definition:
  1. Time required for the plasma concentration of a drug to reduce to half its original value
  2. Expressed in units of time (e.g., minutes, hours)
  3. t½ = (ln 2)/ K
❖ Significance:
  1. Affects duration of action of a drug
  2. Determines dosing interval of drugs
  3. Determines Loading dose and Maintenace dose
  4. Helps achieve and maintain steady-state concentration
  5. Useful in designing controlled/sustained-release formulations
  6. Important in drug clearance and accumulation studies
  7. Used in calculating time to eliminate drug from the body (generally ~5 half-lives)