Comprehensive Overview of Essential Drugs and Rational Drug Therapy: The Community Pharmacist's Role

Comprehensive Overview of Essential Drugs and Rational Drug Therapy: The Community Pharmacist's Role

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  ESSENTIAL DRUGS CONCEPT, RATIONALDRUG THERAPY ROLE OF COMMUNITY PHARMACIST - DR. HUDSON PHILIP. PHARM.D(PB)
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  ESSENTIAL DRUGS CONCEPT DEFINITION(WHO): Essential drugs are those that satisfy the health care needs of the majority of the population. They should be available at all times, in adequate amounts, in appropriate dosage forms, with assured quality, and at affordable prices.
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  CRITERIA FOR SELECTION 1.Public Health Relevance → Based on disease burden & common health problems in the community/country 2. Evidence-Based Efficacy & Safety → Selected only if proven effective & safe through scientific evidence 3. Cost-Effectiveness → Must be affordable for individuals & healthcare systems → Ensures optimal use of limited resources for maximum health outcomes 4. Healthcare Infrastructure → Availability of trained staff for administration → Proper storage facilities (e.g., refrigeration) considered 5. Ease of Administration → Preference for user-friendly dosage forms → High patient acceptability prioritized
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  SELECTION PROCESS &UPDATES Why Updates Are Needed • New Scientific Evidence → Drug performance data evolves • Changing Disease Patterns → Regional health priorities shift • Antimicrobial Resistance → Requires constant monitoring • New/Better Formulations → Affordable & improved options available Implementation via Essential Medicine List (EML) • Outcome of Selection Process → Focused list tailored to country/state needs • Coverage → Meets ~80–90% of community healthcare needs • Impact → Standardized treatment reduces preventable deaths (e.g., pneumonia, diarrhea)
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  CHARACTERISTICS: • Selected basedon public health relevance. • Proven efficacy, safety, and quality. • Cost effectiveness compared to alternatives. ‑ • Regularly updated in the WHO Model List of Essential Medicines. EXAMPLES: Paracetamol, ORS, antibiotics (amoxicillin), antimalarials (chloroquine/artemisinin), vaccines, insulin
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  RATIONAL DRUG THERAPY DEFINITION: Theuse of medicines that are appropriate to the patient’s clinical needs, in doses that meet individual requirements, for an adequate period, and at the lowest cost to them and the community.
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  PRINCIPLES: • Correct diagnosis. •Appropriate drug selection (efficacy, safety, cost). • Correct dose, route, duration. • Patient adherence and counselling. • Avoidance of polypharmacy and irrational combinations. WHO Emphasis: Rational use reduces resistance (e.g., antibiotics), minimizes adverse drug reactions, and ensures cost effective healthcare. ‑ Examples of irrational therapy: Overuse of antibiotics for viral infections, unnecessary vitamin injections, polypharmacy in elderly.
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  THE "EFFECTIVENESS GAP" Differencebetween clinical trial efficacy vs. real-world effectiveness Causes: • Suboptimal drug selection/dosage • Improper administration • Poor patient adherence • Drug–drug / drug–food interactions • ADRs & allergic reactions
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  IRRATIONAL DRUG USE Consequences •↑ Illness, ↑ ADRs, ↑ Treatment costs Contributing Factors • Self-medication (family/friends advice, avoiding doctors) • Accessibility (easy access to prescription drugs) Common Types • Polypharmacy (too many unnecessary drugs) • Incorrect Antibiotic Use (wrong dose/duration, viral infections) • Overuse of Injections (when oral drugs suffice) • Ignoring STGs (Standard Treatment Guidelines)
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  STRATEGIES TO IMPROVERDU • Managerial → STGs, EMLs, prescription audits • Economic → Incentives, insurance linked to EML, competitive pricing • Regulatory → Qualified prescribers only, ban unsafe drugs, regulate promotions • Educational → Continuous training, unbiased drug info, patient education ROLE OF THE PHARMACIST • Therapeutic Monitoring → Effectiveness, side effects, interactions • Clinical Collaboration → DTCs, dosage regimen support • Patient Counseling → Proper use, adherence, expected outcomes • Drug Information → Evidence-based guidance for healthcare teams • Pharmacovigilance → ADR monitoring & reporting NATIONAL IMPLEMENTATION (WHO) • Establish national authority for medicine policy • Mandatory continuing medical education • Adequate funding for essential medicines • Goal → Maximize healthcare resources for population benefit
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  ROLE OF COMMUNITYPHARMACIST 1. ENSURING ACCESS TO ESSENTIAL DRUGS • Maintain adequate stock of essential medicines (ORS, antimalarials, antibiotics, vaccines). • Ensure quality assurance and proper storage conditions
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  2. PROMOTING RATIONALDRUG USE • Counsel patients on correct dosage, duration, and possible side effects. • Prevent misuse of antibiotics, sedatives, and habit forming ‑ drugs. • Educate on self medication risks and when to seek medical ‑ advice.
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  3. HEALTH EDUCATION •Provide information on nutrition, hygiene, vaccination, family planning, and prevention of communicable diseases. • Act as a first contact point for minor ailments, guiding safe OTC use.
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  4. COLLABORATION WITHPUBLIC HEALTH PROGRAMS • Support government initiatives (National Essential Medicines List, immunization drives, deworming programs). • Participate in pharmacovigilance — reporting adverse drug reactions
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  5. DRUG STORE& BUSINESS MANAGEMENT PERSPECTIVE • Ethical stocking and dispensing practices. • Avoiding counterfeit/substandard drugs. • Balancing business sustainability with public health responsibility.
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  THANK YOU !