About Pharmaceutics 1
Subject Code
BP103T
Semester
Semester 1
Credits
4 Credits
Pharmaceutics 1 (BP103T) introduces the art and science of formulating and dispensing drugs. This foundational subject covers the history of pharmacy, the study of various dosage forms like tablets, syrups, and ointments, and the calculations required for precise dosing. It bridges the gap between a chemical drug substance and a safe, effective medicine for patients. Mastering this subject is essential for understanding how medicines are developed and delivered.
Key Learning Objectives
- Understand Pharmacy Profession: Know the professional history of pharmacy in India and pharmacopoeias (IP, BP, USP).
- Master Dosage Forms: Classify and describe various solid, liquid, and semisolid dosage forms.
- Perform Calculations: Solve pharmaceutical calculations involving Posology, Isotonicity, and Alligation method.
- Dispensing Skills: Learn to read, handle, and identify errors in prescriptions.
- Formulation Basics: Understand the preparation and stability of Powders, Monophasic liquids, Suspension, Emulsions, and Suppositories.
Syllabus & Topics Covered
Unit 1: History, Dosage Forms & Prescription
- Historical background and development of profession of pharmacy: History of profession of Pharmacy in India in relation to pharmacy education, industry and organization, Pharmacy as a career, Pharmacopoeias: Introduction to IP, BP, USP and Extra Pharmacopoeia.
- Dosage forms: Introduction to dosage forms, classification and definitions.
- Prescription: Definition, Parts of prescription, handling of Prescription and Errors in prescription.
- Posology: Definition, Factors affecting posology. Pediatric dose calculations based on age, body weight and body surface area.
Unit 2: Calculations, Powders & Liquid Dosage Forms
- Pharmaceutical calculations: Weights and measures – Imperial & Metric system, Calculations involving percentage solutions, alligation, proof spirit and isotonic solutions based on freezing point and molecular weight.
- Powders: Definition, classification, advantages and disadvantages, Simple & compound powders – official preparations, dusting powders, effervescent, efflorescent and hygroscopic powders, eutectic mixtures. Geometric dilutions.
- Liquid dosage forms: Advantages and disadvantages of liquid dosage forms. Excipients used in formulation of liquid dosage forms. Solubility enhancement techniques.
Unit 3: Monophasic & Biphasic Liquids
- Monophasic liquids: Definitions and preparations of Gargles, Mouthwashes, Throat Paint, Eardrops, Nasal drops, Enemas, Syrups, Elixirs, Liniments and Lotions.
- Biphasic liquids – Suspensions: Definition, advantages and disadvantages, classifications, Preparation of suspensions; Flocculated and Deflocculated suspension & stability problems and methods to overcome.
- Emulsions: Definition, classification, emulsifying agent, test for the identification of type of Emulsion, Methods of preparation & stability problems and methods to overcome.
Unit 4: Suppositories & Incompatibilities
- Suppositories: Definition, types, advantages and disadvantages, types of bases, methods of preparations. Displacement value & its calculations, evaluation of suppositories.
- Pharmaceutical incompatibilities: Definition, classification, physical, chemical and therapeutic incompatibilities with examples.
Unit 5: Semisolid Dosage Forms
- Semisolid dosage forms: Definitions, classification, mechanisms and factors influencing dermal penetration of drugs.
- Preparations: Preparation of ointments, pastes, creams and gels.
- Excipients & Evaluation: Excipients used in semi solid dosage forms. Evaluation of semi solid dosages forms.
How to Score High in Pharmaceutics 1
- 1
Memorize Formulas: Posology formulas (Young’s, Dilling’s) and freezing point depression method for isotonicity are must-knows for numericals.
- 2
Differentiate Clearly: Create comparison tables for Flocculated vs. Deflocculated Suspensions and Creaming vs. Cracking in emulsions.
- 3
Practice Latin Terms: Learn common Latin terms used in prescriptions (e.g., ‘b.i.d.’, ‘h.s.’, ‘p.c.’) as they are frequently asked.
- 4
Flowcharts for Prep: Use flowcharts to remember the preparation steps of Emulsions (Dry Gum vs. Wet Gum method) and Suppositories.
- 5
Examples are Key: Always cite 2-3 market examples for each dosage form (e.g., Calamine Lotion, Paracetamol Syrup) in your answers.
Why it Matters for Career
Pharmaceutics is the core of the manufacturing (Production) sector. Whether you work in Formulation R&D or Production in a pharma company, knowing how to create stable, effective dosage forms is your primary job. It is also critical for Hospital and Community Pharmacists for dispensing and compounding.
Exam Weightage
This subject is a mix of theory and numericals. ‘Posology calculations’ and ‘Isotonicity’ are sure-shot numerical questions. Distinction questions (Flocculated vs Deflocculated) and ‘Stability of Emulsions’ are repeated every year. Unit 1 (Prescription/Posology) is the easiest to score full marks in.
Frequently Asked Questions (FAQs)
Are numerical problems asked in Pharmaceutics 1?
Yes, definitely. You can expect 5-10 marks worth of numericals based on Posology (dose calculation) and Isotonic solutions in the end-semester exam.
What is the most important unit in Pharmaceutics 1?
Unit 3 (Monophasic & Biphasic Liquids) covers a vast number of dosage forms and carries high weightage. Both Suspensions and Emulsions are critical topics.
Do I need to learn the History of Pharmacy?
Yes, specifically the ‘Pharmacy Career in India’ and the ‘History of Pharmacopoeias’. These are often asked as long-answer questions in sessional and final exams.