Page 19 of 29

PH10.{14-15,17} | PH10.{14-15,17} | Patient Communication, Adherence and Public Drug Education — SDL Guide — SDL Guide

Learning Objectives

• Communicate drug therapy to patients regarding optimal use, including indication, dosing, expected effects, and what to report, using empathy and professionalism
• Describe methods to improve adherence to treatment and motivate patients with chronic diseases to adhere to prescribed pharmacotherapy
• Demonstrate ability to educate patients and the public about drug use, drug dependence, and OTC medication safety

INSTRUCTIONS

A perfectly written prescription filled with the correct evidence-based drug is clinically worthless if the patient does not understand how to take it, does not trust the rationale, and stops after three days. Studies consistently show that adherence to long-term therapy averages around 50% even in developed countries — and is often lower in low-resource settings. The WHO identifies poor adherence as 'the most important cause of undertreatment of chronic conditions globally.' This module builds the communication skills to close the gap between prescribing and therapeutic outcomes, and the public health skills to extend that impact beyond the clinic.

References

• KD Tripathi, Essentials of Medical Pharmacology, 8th ed, Ch 2 (Patient counselling, adherence) (textbook)
• WHO Report on Adherence to Long-Term Therapies: Evidence for Action, 2003 (guideline)
• WHO Guide to Good Prescribing — Step 5: Give information, instructions, and warnings (WHO/DAP/94.11) (guideline)

---

Version 2.0 | NMC CBUC 2024

Why Communication Is a Clinical Pharmacology Skill

Communication about drugs is not a 'soft skill' separate from pharmacology — it is the mechanism by which pharmacological knowledge is translated into clinical outcome. A prescriber's communication failures produce measurable, quantifiable harms in the same way that a wrong dose or a missed drug interaction does.

The evidence for this is robust. Studies across cardiovascular disease, diabetes, HIV, epilepsy, and tuberculosis consistently show that:
- Patients who understand their diagnosis and the reason for treatment have significantly higher adherence rates than those who do not
- Patients who are counselled on what to expect (including common side effects) are less likely to discontinue therapy when those effects occur
- Health literacy — the ability to obtain, understand, and act on health information — moderates adherence; effective communication by the prescriber compensates for low health literacy
- Empathy and therapeutic alliance (the quality of the doctor-patient relationship) independently predicts adherence, over and above the complexity of the regimen

Clinical communication about drugs is therefore a pharmacotherapeutic intervention — it has efficacy data and should be implemented with the same intentionality as drug selection and dosing.

In India, communication challenges are compounded by: language diversity (patients may not share the prescriber's primary language), health literacy variation, cultural beliefs about medicines (e.g. concerns about long-term medication 'weakening the kidneys' are common in rural populations and directly drive discontinuation), and cost (patients who cannot afford a medication are often reluctant to say so).

Framework for Patient Drug Communication: Structure and Principles

The WHO Guide to Good Prescribing identifies five elements that every drug counselling encounter should cover. This structured framework prevents the most common counselling failure: prescribers tend to focus on how to take the drug but omit why it matters and when to seek help.

The five-element drug counselling framework:

1. The drug's indication (Why): What is the drug for? What problem is it treating? This motivates the patient — understanding the 'why' is the strongest driver of intentional adherence. 'This tablet lowers your blood sugar, which protects your kidneys, eyes, and heart over time' is more motivating than 'take this for your diabetes.'

2. How to take the drug (How): Dose, timing, route, and technique. Specific instructions matter more than general: 'take metformin with or after food to avoid stomach upset' prevents a common early discontinuation cause. Demonstrate technique for inhalers and insulin pens — verbal instruction alone is insufficient.

3. Expected effects and course (What): What will the patient notice? When? For symptomatic drugs, explain when to expect improvement. For preventive drugs (antihypertensives, statins), explicitly tell the patient that 'feeling fine' does not mean the drug is not working — many patients stop preventive drugs precisely because they feel no different.

4. Side effects and when to report (Alert): Mention the most common (>5%) and the most important serious effects — not a full package insert recitation. For metformin: 'you may have some stomach discomfort in the first few weeks — take it with food and this usually improves. Rarely, it can lower blood sugar if you skip meals — if you feel shaky, sweaty, or confused, eat something and contact us.'

5. When to return and when to seek urgent help (Return): Scheduled follow-up date, and clear instructions for when to seek urgent care (fever on antibiotics, chest pain on new medication, jaundice on TB drugs).

Principles of effective communication:
- Plain language: Use the language the patient speaks best; avoid medical jargon or translate it immediately ('your HbA1c — that is a test that shows your average blood sugar over three months')
- Teach-back: After explaining, ask the patient to tell you in their own words what they understood — 'just so I know I explained it clearly, can you tell me how you will take this tablet?' This is the single most evidence-based communication technique for verifying understanding
- Cultural competence: Address beliefs respectfully — 'Some people worry that these tablets will harm their kidneys over time. Studies show the opposite: they protect the kidneys when taken correctly'
- Brief written or illustrated instructions (in the patient's language where possible) as a supplement to verbal counselling

Communicating Drug Therapy: Worked Examples

The five-element framework becomes a clinical habit through practice with real cases. Two detailed worked examples illustrate communication for commonly prescribed long-term medications.

Example 1 — Oral Contraceptives:
Patient: 22-year-old woman starting combined oral contraceptive pill (COC, e.g. ethinylestradiol 30 mcg + levonorgestrel 150 mcg) for contraception.

Communication script:
1. Why: 'This pill works by preventing ovulation and is more than 99% effective when taken correctly every day.'
2. How: 'Take one pill at the same time every day — linking it to a daily routine like brushing your teeth at night makes it easier. Take the active pills for 21 days, then the 7 pill-free (or inactive pill) days when you expect your period.'
3. Expected effects: 'You may have lighter, more regular periods. Some women get slight nausea in the first month — taking it at night helps. Your period may be slightly different for the first 1–2 months.'
4. Alerts: 'Very rarely, oral contraceptives can increase the risk of blood clots — if you develop severe calf pain, chest pain, or shortness of breath, seek urgent care immediately. Tell any doctor prescribing you other medicines that you are on the pill — some drugs reduce its effectiveness (rifampicin for TB, some anticonvulsants, St. John's wort). If you miss a pill, the guidance I am now writing for you applies...'
5. Return: 'Return in 3 months for a blood pressure check; earlier if you have any concerns.'
Missed pill guidance: provide written instructions per WHO guidance (see quiz explanation above).

Example 2 — Anti-TB drugs (RIPE regimen):
Patient: 35-year-old man newly diagnosed with pulmonary tuberculosis, starting RIPE (Rifampicin, Isoniazid, Pyrazinamide, Ethambutol) under DOTS.
1. Why: 'TB is caused by a bacterium that must be killed with four drugs taken together for 6 months. Stopping early — even if you feel better in 2–3 months — allows resistant bacteria to survive and makes treatment much harder.'
2. How: 'All four tablets are taken together, once daily, on an empty stomach (or with minimal food). You will take them daily, and your DOTS worker will observe you taking them on treatment days — this helps confirm your treatment is complete.'
3. Expected effects: 'You should feel better within 2–4 weeks, and by 2 months you are unlikely to be infectious to others. Your sputum will be rechecked at 2 months.'
4. Alerts: 'Rifampicin will turn your urine, tears, and sweat orange-red — this is normal and not dangerous. Isoniazid can cause tingling in hands and feet — you will also take Vitamin B6 (pyridoxine) to prevent this. If you develop yellow eyes or skin, stop all drugs and come immediately — this is a sign of liver side effects. Pyrazinamide can cause joint pain — paracetamol usually helps.'
5. Return: 'Review at 2 weeks, 2 months (sputum check), 5 months, and 6 months.'