About Pharmacology III
Subject Code
BP602T
Semester
Semester 6
Credits
4 Credits
Pharmacology III (BP602T) completes the pharmacology trilogy by covering three major domains: (1) Pharmacology of Respiratory and GIT drugs — antiasthmatics, antiulcer agents, antiemetics, and more. (2) Chemotherapy — the entire spectrum of anti-infective agents from sulfonamides to anticancer drugs, plus immunopharmacology. (3) Toxicology and Chronopharmacology — principles of poisoning management and the science of biological rhythms in drug therapy.
Key Learning Objectives
- Respiratory & GIT Drugs: Classify and explain the pharmacology of antiasthmatics, COPD drugs, antiulcer agents, and antiemetics.
- Chemotherapy Principles: Understand the general principles of antimicrobial therapy and mechanisms of antibiotic resistance.
- Anti-infectives: Study the pharmacology of anti-TB, antifungal, antiviral, antimalarial, and anthelmintic agents.
- Immunopharmacology: Differentiate immunostimulants, immunosuppressants, and understand monoclonal antibodies and biosimilars.
- Toxicology: Apply principles of poison management and describe treatment of specific poisonings (barbiturate, morphine, organophosphorus, heavy metals).
Syllabus & Topics Covered
Unit 1: Respiratory System & GIT Pharmacology
- Pharmacology of drugs acting on Respiratory system: Anti-asthmatic drugs, Drugs used in COPD, Expectorants and antitussives, Nasal decongestants, Respiratory stimulants.
- Pharmacology of drugs acting on the Gastrointestinal Tract: Antiulcer agents, Drugs for constipation and diarrhoea, Appetite stimulants and suppressants, Digestants and carminatives, Emetics and anti-emetics.
Unit 2: Chemotherapy – Sulfonamides & Antibiotics
- General principles of chemotherapy.
- Sulfonamides and cotrimoxazole.
- Antibiotics – Penicillins, Cephalosporins, Chloramphenicol, Macrolides, Quinolones and Fluoroquinolones, Tetracyclines, Aminoglycosides.
Unit 3: Chemotherapy – Anti-TB, Antifungals, Antivirals & Antimalarials
- Antitubercular agents.
- Antileprotic agents.
- Antifungal agents.
- Antiviral drugs.
- Anthelmintics.
- Antimalarial drugs.
- Antiamoebic agents.
Unit 4: UTI, Anticancer & Immunopharmacology
- Urinary tract infections and sexually transmitted diseases.
- Chemotherapy of malignancy.
- Immunopharmacology: Immunostimulants, Immunosuppressants.
- Protein drugs, monoclonal antibodies, target drugs to antigen, biosimilars.
Unit 5: Toxicology & Chronopharmacology
- Principles of toxicology: Acute, subacute and chronic toxicity. Genotoxicity, carcinogenicity, teratogenicity and mutagenicity.
- General principles of treatment of poisoning.
- Clinical symptoms and management of barbiturates, morphine, organophosphorus compound and lead, mercury and arsenic poisoning.
- Chronopharmacology: Definition of rhythm and cycles. Biological clock and their significance leading to chronotherapy.
How to Score High in Pharmacology III
- 1
Link with Medicinal Chemistry 3: The chemotherapy units (2-4) overlap heavily with MC-3. Cross-reference drug mechanisms and SAR for deeper understanding.
- 2
Tables for Antibiotics: Make a comparison table of antibiotics with columns: Class, MOA, Spectrum, Key Drugs, Resistance, ADR.
- 3
Toxicology Flowcharts: Draw a treatment algorithm for each type of poisoning — the examiner rewards structured, step-by-step answers.
- 4
GIT Drug Classification: Master the classification trees for antiulcer agents, laxatives, and antiemetics — they are guaranteed short-answer questions.
Why it Matters for Career
Pharmacology 3 is directly relevant to clinical pharmacy, hospital pharmacy, and drug information services. Knowledge of antibiotic selection, toxicology management, and immunopharmacology is essential for pharmacovigilance, clinical research, and regulatory affairs careers.
Exam Weightage
Units 1 (Respiratory + GIT) and 2-3 (Chemotherapy/Antibiotics) carry the most marks. Antiulcer agents, antiasthmatics, and antibiotic classification are guaranteed questions. Toxicology management (Unit 5) is a frequent long-answer topic.
Frequently Asked Questions (FAQs)
How is Pharmacology 3 different from Pharmacology 2?
Pharmacology 2 covered CVS drugs, Autocoids/NSAIDs, and Endocrine pharmacology. Pharmacology 3 shifts to Respiratory/GIT drugs, Chemotherapy (the entire anti-infective spectrum), Immunopharmacology, Toxicology, and Chronopharmacology. Together, they cover the complete pharmacological landscape.
Is the Chemotherapy section the same as Medicinal Chemistry 3?
There is significant overlap in drug names, but the approach is different. MC-3 focuses on chemical structures, SAR, and drug design. Pharmacology 3 focuses on mechanism of action, pharmacokinetics, clinical uses, adverse effects, drug interactions, and resistance mechanisms. Both perspectives are complementary.
What is Chronopharmacology?
Chronopharmacology studies how biological rhythms (circadian, ultradian, infradian) affect drug action. For example, blood pressure follows a circadian pattern (highest in morning) → timing antihypertensive dosing can optimize therapy. Asthma attacks are worst at night (4 AM) → sustained-release theophylline at bedtime. This concept of timing drug administration for maximum efficacy and minimum toxicity is called Chronotherapy.