Polypharmacy: Understanding Risks and Safe Medication Management Strategies

Polypharmacy—typically defined as ≥5 regular medications—is common in older adults and complex chronic disease. It's not inherently bad, but unmanaged polypharmacy drives harm.

Why It Happens

• Multiple specialists prescribing in silos
• Prescribing cascades: drug side effect treated as new condition
• Inertia: medications continued without reassessment
• Patient expectations, OTC/supplement additions

Risks

• Adverse drug events (ADEs): Falls, confusion, bleeding, renal injury, hypoglycemia
• Drug-drug interactions: Pharmacokinetic (CYP450) + pharmacodynamic (additive sedation, QT prolongation)
• Non-adherence: Complexity → missed doses, errors, discontinuation
• Functional decline: Anticholinergic burden → cognitive impairment
• Cost: Patient + system burden

High-Risk Medication Classes (Beers/STOPP Criteria)

• Benzodiazepines, Z-drugs (falls, delirium)
• Anticholinergics (diphenhydramine, oxybutynin, TCAs)
• Long-acting sulfonylureas (glyburide → hypoglycemia)
• NSAIDs (GI bleed, renal, HF exacerbation)
• Skeletal muscle relaxants
• Antipsychotics in dementia (mortality ↑)

Safe Management: The Deprescribing Loop

1. Brown-bag review: Patient brings ALL meds (Rx, OTC, supplements) to every visit
2. Indication check: Does each drug have a current, valid reason?
3. Benefit-harm assessment: For this patient, now? (Life expectancy, goals of care)
4. Interaction screen: Tools: Medscape, Lexicomp, Epocrates
5. Prioritize deprescribing: One drug at a time, slow taper, monitor
6. Communicate: With patient, caregivers, all prescribers
7. Document rationale

Patient Actions

• Keep an updated med list (name, dose, why, prescriber)
• Use one pharmacy
• Ask at every visit: "Do I still need this? Can any be lowered or stopped?"
• Report new symptoms promptly—may be drug-related

Polypharmacy management is quality care. The best medication is often the one you stop.