Deprescribing Principles and Practice: A Core Competency for CGP Certified Geriatric Pharmacists
As an aspiring or current CGP Certified Geriatric Pharmacist, understanding the principles and practice of deprescribing isn't just an academic exercise; it's a fundamental skill that directly impacts patient safety, quality of life, and healthcare outcomes for older adults. This mini-article will delve into the nuances of deprescribing, highlighting its critical importance for your practice and success on the CGP Certified Geriatric Pharmacist exam, as of April 2026.
1. Introduction: What is Deprescribing and Why It Matters for the Exam
In an era where polypharmacy is rampant among older adults, deprescribing has emerged as a crucial intervention. Simply put, deprescribing is the planned and supervised process of dose reduction or stopping of medications that may be causing harm or are no longer beneficial. It's not merely about reducing pill burden; it's about optimizing medication regimens to align with a patient's current health status, care goals, and preferences.
For the CGP Certified Geriatric Pharmacist exam, deprescribing represents a significant domain. Geriatric pharmacists are uniquely positioned to lead deprescribing efforts due to their in-depth knowledge of pharmacology, pharmacokinetics, pharmacodynamics in older adults, and their ability to conduct comprehensive medication reviews. Expect questions that test your ability to identify potentially inappropriate medications (PIMs), develop patient-specific deprescribing plans, and navigate the complex ethical and communication challenges involved.
2. Key Concepts: Detailed Explanations with Examples
What is Deprescribing?
Deprescribing is a systematic process aimed at reducing medication burden. It involves:
- Identifying potentially inappropriate medications (PIMs): These are drugs whose risks often outweigh their benefits in older adults.
- Assessing patient goals and preferences: A crucial step for shared decision-making.
- Developing a plan: Often involves gradual tapering rather than abrupt cessation, especially for drugs with withdrawal potential.
- Monitoring: Observing for withdrawal symptoms, recurrence of original symptoms, or new benefits.
Why Deprescribe? The Rationale in Geriatrics
Older adults are particularly vulnerable to medication-related problems. The reasons for deprescribing are compelling:
- Polypharmacy: The concurrent use of multiple medications, often defined as 5 or more, increases the risk of adverse drug events (ADEs), drug-drug interactions, and prescribing cascades.
- Altered Pharmacokinetics/Pharmacodynamics: Age-related physiological changes (e.g., decreased renal/hepatic function, altered body composition) can lead to higher drug concentrations and increased sensitivity to medication effects.
- Increased Risk of ADEs: Older adults experience ADEs at higher rates, leading to hospitalizations, falls, cognitive impairment, and decreased quality of life.
- Prescribing Cascade: When an ADE is misinterpreted as a new medical condition, leading to the prescription of another medication to treat the "new" condition, perpetuating a cycle of medication burden.
Example: An older adult develops tremor due to a selective serotonin reuptake inhibitor (SSRI), which is then misdiagnosed as essential tremor, leading to the prescription of an anticholinergic, further increasing anticholinergic burden and cognitive risk.
- Patient Burden: Managing multiple medications can be complex, costly, and impact adherence.
- Cost Savings: Reducing unnecessary medications can decrease out-of-pocket expenses for patients and healthcare system costs.
Tools for Identifying PIMs and Optimizing Regimens
Several evidence-based tools guide deprescribing efforts:
- American Geriatrics Society Beers Criteria®: A widely recognized list of PIMs for older adults, categorized by drug class and clinical condition. It also lists drug-drug interactions and drugs to be used with caution.
- STOPP (Screening Tool of Older Persons' Potentially Inappropriate Prescriptions) Criteria: Focuses on medications that are potentially inappropriate in specific clinical situations.
- START (Screening Tool to Alert doctors to Right Treatment) Criteria: Complements STOPP by identifying instances where potentially beneficial medications are omitted.
- Medication Appropriateness Index (MAI): A structured tool for assessing the appropriateness of individual medications based on ten criteria.
The Deprescribing Process: A Step-by-Step Approach
- Comprehensive Medication Review: Gather a complete and accurate list of all medications, including OTC, supplements, and herbal remedies. Understand indications, dosages, and duration of use.
- Assess Patient Goals and Preferences: Engage in shared decision-making. What matters most to the patient? What are their health priorities? Discuss the risks and benefits of continuing vs. discontinuing medications.
- Identify PIMs and Prioritize: Use tools like Beers or STOPP/START criteria. Prioritize medications based on highest risk of harm, weakest evidence of benefit, or patient preference. Consider medications with high anticholinergic burden, long half-lives, or those contributing to falls.
- Develop a Deprescribing Plan:
- One drug at a time: Generally recommended to monitor for specific withdrawal symptoms or symptom recurrence.
- Gradual tapering: Especially for drugs like benzodiazepines, opioids, or antidepressants, to minimize withdrawal symptoms.
- Clear instructions: Provide written instructions for the patient and caregiver.
- Monitor and Follow-Up: Regularly assess for withdrawal symptoms, rebound effects, recurrence of the original condition, and any improvements in patient well-being or symptoms. Adjust the plan as needed.
Specific Drug Classes for Deprescribing Focus
Pharmacists should be particularly aware of drug classes frequently targeted for deprescribing:
- Benzodiazepines and Z-drugs (e.g., zolpidem): High risk of falls, cognitive impairment, dependence, and withdrawal.
- Proton Pump Inhibitors (PPIs): Long-term use associated with C. difficile infection, pneumonia, bone fractures, and kidney disease. Often continued without clear indication.
- Anticholinergics: Contributes to cognitive impairment, dry mouth, constipation, urinary retention, and falls. Many common drugs (e.g., diphenhydramine) have significant anticholinergic effects.
- Sulfonylureas (e.g., glyburide): High risk of hypoglycemia in older adults, especially those with impaired renal function or poor nutritional intake.
- Antihypertensives: In frail older adults, aggressive blood pressure targets can increase fall risk and orthostatic hypotension.
- Antipsychotics: Often used off-label for behavioral and psychological symptoms of dementia (BPSD), with risks of cerebrovascular events and increased mortality.
3. How It Appears on the Exam: Question Styles, Common Scenarios
The CGP exam will assess your practical application of deprescribing principles. You can expect:
- Case-Based Scenarios: A patient profile with multiple comorbidities and medications will be presented. You'll need to identify PIMs, justify your reasoning using tools like Beers Criteria, and propose a deprescribing strategy.
Example: "Mrs. Smith, 82, with dementia, recurrent falls, and chronic GERD, is taking omeprazole, donepezil, and diphenhydramine PRN for sleep. Which medication should be considered for deprescribing first, and why?"
- Direct Knowledge Questions: Questions about the definitions of deprescribing, specific criteria within Beers or STOPP/START, common withdrawal symptoms, or ethical considerations (e.g., shared decision-making).
- Pharmacist's Role: Questions focusing on the pharmacist's specific contributions to a deprescribing team or counseling a patient/caregiver.
- Balancing Risks and Benefits: Many questions will require you to weigh the potential harms of a medication against its potential benefits in a specific patient context, considering their life expectancy and goals of care.
To truly prepare, practice with CGP Certified Geriatric Pharmacist practice questions that simulate these scenarios.
4. Study Tips: Efficient Approaches for Mastering This Topic
- Master the Criteria: Dedicate significant time to understanding and applying the Beers Criteria and STOPP/START criteria. Don't just memorize; understand the clinical rationale behind each recommendation.
- Understand Pharmacology in Geriatrics: Review how age-related physiological changes impact drug absorption, distribution, metabolism, and excretion for common geriatric medications. This foundational knowledge is key to identifying PIMs.
- Focus on High-Risk Drug Classes: Create a list of common medications that are frequently deprescribed in older adults (e.g., benzodiazepines, PPIs, anticholinergics) and understand their associated risks and appropriate tapering strategies.
- Practice Case Studies: Work through as many patient cases as possible. Identify PIMs, develop rationales, and formulate deprescribing plans. Consider the patient's perspective and potential barriers.
- Communication Skills: While the exam is written, understanding the principles of effective communication and shared decision-making in deprescribing is vital. How would you explain the rationale for deprescribing to a hesitant patient or family member?
- Utilize Practice Questions: Leverage resources like free practice questions and comprehensive study guides to test your knowledge and identify areas for improvement.
- Stay Updated: Clinical guidelines and criteria evolve. Ensure your study materials are current as of April 2026.
5. Common Mistakes: What to Watch Out For
Avoid these pitfalls when approaching deprescribing on the exam and in practice:
- Ignoring Patient Preferences: Failing to consider the patient's values, goals of care, and concerns is a critical error. Deprescribing must be patient-centered.
- Abrupt Discontinuation: Stopping medications suddenly without appropriate tapering, especially for drugs like benzodiazepines, antidepressants, or opioids, can lead to severe withdrawal symptoms or rebound effects.
- Failing to Monitor: Not planning for follow-up to assess for withdrawal, symptom recurrence, or new benefits means missing crucial feedback on the deprescribing intervention.
- Focusing Only on PIMs: While PIMs are important, also consider medications that may be appropriate but are no longer aligned with the patient's current health status or life expectancy (e.g., statins in a patient with very limited life expectancy).
- Overlooking Non-Pharmacological Alternatives: Sometimes, behavioral or lifestyle interventions can be more appropriate than medication, or can replace a deprescribed medication.
- Not Documenting Thoroughly: Forgetting to document the rationale for deprescribing, the plan, and the monitoring strategy can lead to confusion and lack of continuity of care.
- Fear of the Unknown: Hesitancy to deprescribe due to fear of the patient's condition worsening, even when evidence suggests benefit, can lead to continued harm.
6. Quick Review / Summary
Deprescribing is a proactive, patient-centered approach to medication management that is indispensable in geriatric pharmacy. It involves a thoughtful, systematic process of identifying and discontinuing medications where the potential for harm outweighs the benefit, always within the context of the individual patient's goals and preferences.
For the CGP Certified Geriatric Pharmacist exam, demonstrating your proficiency in deprescribing is paramount. This includes a solid understanding of the rationale for deprescribing, familiarity with key assessment tools (Beers, STOPP/START), the ability to apply a structured deprescribing process, and a strong awareness of common pitfalls. By mastering these principles, you not only prepare effectively for your certification but also enhance your ability to provide exceptional, safe, and person-centered care to older adults.