Actions and Uses of Medicines
This element explores the fundamental pharmacological principles governing how medicines interact with the human body, including absorption, distribution, metabolism, and excretion. It also examines the therapeutic applications and inherent limitations of medicines in treating various conditions, while equipping learners with the skills to effectively utilise standard pharmacy reference sources to resolve pharmaceutical queries, ensuring safe and evidence-based practice.
Assessment criteria
Quick Revision Summary (Key Takeaway)
The Open Awards Level 3 Diploma in the Principles and Practice for Pharmacy Technicians (Integrated Apprenticeship) (RQF) is a vocational qualification that equips apprentices with the knowledge, skills, and behaviours required to work as a pharmacy technician in community or hospital settings. It covers pharmaceutical calculations, dispensing processes, legal and ethical frameworks, and patient care, integrating on-the-job training with theoretical study.
Topic Overview
This diploma is a core component of the pharmacy technician integrated apprenticeship, blending workplace learning with academic study. It covers the principles of pharmacy practice, including the legal and ethical framework, the supply and dispensing of medicines, and the importance of patient safety. You will learn about the classification of medicines (POM, P, GSL), the requirements for prescription validity, and the process of dispensing from receipt to final check.
The qualification also develops your skills in pharmaceutical calculations, which are critical for accurate dosing and minimising medication errors. You will explore how to calculate doses for adults and children, handle conversions, and interpret prescription instructions. Additionally, you will study the human body and common conditions, enabling you to understand the rationale behind drug therapy and provide effective patient advice.
As an integrated apprenticeship, this diploma is directly linked to your workplace practice. You will apply your knowledge in real pharmacy settings, developing competencies in areas such as stock control, communication, and health promotion. Successful completion demonstrates that you are a safe and effective pharmacy technician, ready to register with the General Pharmaceutical Council (GPhC) and contribute to the healthcare team.
Key Concepts
Core ideas you must understand for this topic
- →Legal classification of medicines: GSL, P, POM, and Controlled Drugs (CDs) – know the legal requirements for sale, supply, and storage.
- →Prescription validity: essential components (patient details, medicine name, strength, dose, quantity, prescriber signature) and the legal requirements for repeat and electronic prescriptions.
- →Pharmaceutical calculations: dose calculations, unit conversions, and percentage concentrations – accuracy is paramount.
- →Dispensing process: from receiving the prescription to final accuracy check, including labelling and patient counselling.
- →Standard Operating Procedures (SOPs): following written procedures to ensure consistency and safety in all pharmacy activities.
Learning Objectives
What you need to know and understand
- Understand the principles of how medicines work in the human body.Understand the uses and limitations of medicines.Understand the use of standard pharmacy resources to research pharmaceutical queries.
Assessment Criteria
Key criteria assessors look for in your portfolio
- Award credit for accurately explaining pharmacokinetic and pharmacodynamic principles using correct terminology and relevant examples.
- Assessor must see evidence of correctly identifying therapeutic indications, contraindications, and side effects for common medicines.
- Demonstrate proficient use of authoritative resources (e.g., BNF, Martindale, SPCs) to research and resolve a given pharmaceutical query, with citation of sources.
Assessment Guidance
Guidance for achieving higher grades
- 💡In written assessments, structure answers around core pharmacological processes—ADME—and link them directly to therapeutic outcomes.
- 💡When addressing limitations, always discuss side effects, drug interactions, and patient-specific contraindications to demonstrate holistic understanding.
- 💡For resource-use questions, state the specific resource accessed, why it's authoritative, and cross-reference information to confirm accuracy.
- 💡Always quote the relevant legislation or guidance (e.g., Human Medicines Regulations 2012, GPhC standards) when answering legal or ethical questions – this shows depth of knowledge.
- 💡In calculations, show all working and include units in every step. Even if the final answer is wrong, you may gain method marks.
- 💡For scenario-based questions, relate your answer to the role of a pharmacy technician and your workplace experience – examiners reward practical application.
Common Mistakes
Common errors to avoid in your coursework
- Confusing pharmacokinetics (what the body does to the drug) with pharmacodynamics (what the drug does to the body).
- Assuming a medicine's benefits always outweigh its risks without considering individual patient factors or polypharmacy.
- Relying solely on non-authoritative or outdated online sources rather than validated pharmacy-specific references.
- Misconception: Pharmacy technicians can prescribe medicines. Correction: Technicians cannot prescribe; only qualified prescribers (e.g., pharmacists, doctors) can. Technicians supply medicines against a valid prescription.
- Misconception: All medicines can be stored at room temperature. Correction: Some medicines require refrigeration (e.g., insulin) or specific storage conditions; always check the product's storage instructions.
- Misconception: A prescription is valid indefinitely. Correction: Prescriptions are generally valid for 6 months from the date of signing, but some (e.g., for controlled drugs) have shorter validity periods.
Revision Plan
How to revise this topic in 1–2 weeks
- 1Week 1: Focus on legal and ethical aspects – read the Human Medicines Regulations and GPhC standards, and summarise key points.
- 2Week 2: Master pharmaceutical calculations – practice daily with past paper questions, focusing on conversions and dose calculations.
- 3Week 3: Study the dispensing process and SOPs – observe your workplace and note how procedures align with theory.
- 4Week 4: Revise anatomy and pharmacology – create flashcards for common conditions and drug groups.
- 5Week 5: Attempt full past papers under timed conditions and review your answers against mark schemes.
Exam Question Types
How this topic typically appears in the exam
- 📋Multiple-choice questions (MCQs) testing legal classifications, prescription validity, and definitions – read each option carefully and eliminate obvious distractors.
- 📋Short-answer questions requiring you to list or describe steps (e.g., 'List four legal requirements for a valid prescription') – be concise and use bullet points.
- 📋Calculation questions – show your working and include units; check your answer for reasonableness.
- 📋Extended writing (6-mark questions) on scenarios (e.g., 'A patient asks for advice on a medicine – what should you do?') – structure your answer with an introduction, key points, and a conclusion.
Command Word Expectations (OPEN AWARDS)
What examiners look for when using specific command words in this specification
Weigh up the pros and cons, strengths and limitations, and come to a justified conclusion. In Health & Social Care, you must consider different perspectives (e.g., patient safety vs. cost) and use evidence from your knowledge.
Give a detailed account of why or how something happens. Include reasons and mechanisms, not just a description. For example, explain why certain medicines are controlled drugs.
Perform mathematical operations to find a numerical answer. Show all steps and include units. Marks are often awarded for method and accuracy.
How Students Lose Marks (Examiner Pitfalls)
Common mark loss traps and how to write 100% full-mark answers
Step-by-Step Worked Solutions
Detailed solution breakdown for typical exam problems
Question: A patient is prescribed 500 mg of amoxicillin. The available stock is 250 mg capsules. How many capsules are required for a single dose?
- 1.Step 1: Identify the prescribed dose: 500 mg.
- 2.Step 2: Identify the stock strength: 250 mg per capsule.
- 3.Step 3: Divide the prescribed dose by the stock strength: 500 mg ÷ 250 mg = 2 capsules.
Question: A prescription requires 0.5 L of a 0.9% sodium chloride solution. Express this volume in millilitres and calculate the amount of sodium chloride in grams.
- 1.Step 1: Convert litres to millilitres: 0.5 L × 1000 = 500 mL.
- 2.Step 2: Interpret 0.9% as 0.9 g per 100 mL.
- 3.Step 3: Calculate sodium chloride: (0.9 g / 100 mL) × 500 mL = 4.5 g.
Active Recall Memory Test
Test your memory before revealing the key facts
Frequently Asked Questions
Common questions students ask about this topic
Pass / Merit / Distinction Evidence Checklist
How your portfolio evidence is graded for OPEN AWARDS Actions and Uses of Medicines
Every vocational unit is marked against named criteria rather than an exam percentage. Your tutor's brief lists the exact codes for this unit — here is what each band is asking you to do.
Demonstrate baseline knowledge, accurate terminology, and core practical application.
Provide detailed analysis, structured explanations, and clear workplace reasoning.
Deliver thorough evaluation, original problem solving, and fully justified recommendations.
Before You Start
Prior knowledge that will help with this topic
- •Basic numeracy skills, especially arithmetic and unit conversions.
- •Understanding of the healthcare system in the UK, including the role of the NHS and primary care.
- •Familiarity with common medical terminology and abbreviations (e.g., BD, TDS, PRN).
Coursework AI Review
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Key Terminology
Essential terms to know
- Understand the principles of how medicines work in the human body.Understand the uses and limitations of medicines.Understand the use of standard pharmacy resources to research pharmaceutical queries.
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