Polypharmacy Review

A polypharmacy review is a structured consultation in which a doctor or pharmacist carefully examines every medicine a patient is taking to decide whether each one is still necessary, safe, and working as intended.

Many older adults take five or more medicines at the same time — a situation called polypharmacy. Over time, medicines can interact with each other, become less suited to a changing body, or cause side effects that are mistaken for new illnesses. During a polypharmacy review, the clinician maps out all medicines — including prescription drugs, over-the-counter remedies, vitamins, and herbal supplements — and looks for overlaps, dangerous combinations, unnecessary duplicates, or doses that no longer match the patient's current health. Some medicines may be stopped, some may be adjusted, and new ones may occasionally be added if a gap in treatment is spotted.

A polypharmacy review is recommended whenever the number, complexity, or effects of a person's medicines raise concern. It is especially common in geriatrics (the specialty that focuses on the health of older adults), where the body processes medicines differently with age.

• Taking five or more regular medicines at the same time.
• Experiencing side effects — such as falls, confusion, dizziness, or fatigue — that may be caused by medicines rather than by a new illness.
• Being prescribed medicines by several different specialists who may not have a full view of everything else the patient is taking.
• A recent hospital admission or change in a long-term condition such as kidney disease, heart failure, or diabetes.
• Noticing that medicines no longer seem to be working, or that new symptoms have appeared since a medicine was started.
• Preparing for or recovering from surgery, when the medicine list needs to be checked for safety.
• Annual or routine medication check-ups for older adults in a care or community setting.

A polypharmacy review is not a standard fit for every situation. Doctors usually approach it differently when a patient's condition is very unstable, when stopping any medicine could pose an immediate risk, or when the patient is near the end of life and the goal of care is comfort rather than long-term treatment optimization. In these cases, decisions are made with extra care and in close conversation with the patient and family.

A polypharmacy review itself is a conversation and assessment — it does not involve needles, surgery, or procedures on the body, so the direct physical risks are very low. However, changes made to medicines as a result of the review carry their own considerations that patients should understand.

• Withdrawal or rebound effects: stopping certain medicines too quickly — such as medicines for blood pressure, mood, or pain — can sometimes cause temporary symptoms. Doctors usually taper (reduce gradually) these medicines rather than stopping them abruptly.
• Return of an underlying condition: if a medicine is stopped and the condition it was controlling becomes active again, the patient may need to restart treatment. This is monitored closely.
• Missed benefit: in rare cases, a medicine identified as potentially unnecessary may turn out to have been providing a benefit that only becomes apparent after it is stopped.
• New interactions after adjustment: changing the dose of one medicine can occasionally affect how another medicine works, requiring further monitoring.
• Confusion during transition: having a revised medicine list can sometimes cause confusion, particularly for older patients managing their own medicines at home. Clear written instructions and pharmacist support usually help.

Unlike surgical procedures, a polypharmacy review does not require fasting, anaesthesia (medicine that makes you sleep or numbs an area), or any physical preparation of the body. There are no restrictions on eating, drinking, or daily activity before the appointment. Patients are also asked not to stop or change any medicine on their own before the review — the whole point is for the clinician to see the current, complete picture.

The most important preparation is gathering information. Patients (or a family member or carer who helps them) are usually asked to bring the following to the appointment:

• All medicine packets, bottles, or blister packs currently in use — including vitamins, minerals, and herbal products.
• Any medicines kept at a second location, such as at work or at a relative's home.
• A list of medicines that were recently stopped, and if known, why they were stopped.
• Names of all doctors, specialists, or clinics that have prescribed medicines in the past year.
• A note of any symptoms, side effects, or changes the patient has noticed since starting or stopping a medicine.

Some doctors or clinics arrange simple tests before or alongside the review to understand how the body is currently handling medicines. These may include a blood test to check kidney function (how well the kidneys filter waste), liver function (how well the liver breaks down medicines), and levels of certain medicines in the blood. An EKG (a test that records the heart's electrical activity) may also be requested if any medicines affect heart rhythm.

The review itself usually follows a sequence similar to this, though the exact steps and the time needed can vary between hospitals and clinicians:

• 1. The clinician reviews the patient's full medical history and current diagnoses (identified health conditions).
• 2. Every medicine on the list is discussed — what it is for, how long it has been taken, and whether the patient is actually taking it as prescribed.
• 3. The clinician checks for drug-drug interactions (when two medicines interfere with each other), drug-disease interactions (when a medicine makes a health condition worse), and medicines that may no longer be appropriate for the patient's age or kidney and liver function.
• 4. Together with the patient, the clinician identifies medicines that could potentially be stopped, reduced, or switched.
• 5. A revised medicine plan is agreed upon, with clear explanations of what is changing and why.
• 6. The plan is shared with the patient's other doctors, the dispensing pharmacist, and any carer involved in medicine management.

Because a polypharmacy review is a consultation rather than a physical procedure, there is no recovery room, wound to care for, or period of physical rest required. The 'aftercare' period is really about monitoring how the patient responds to any changes made to their medicine list, and this is usually managed through follow-up appointments rather than hospital admission.

• Follow-up schedule: most clinicians arrange a check-in — in person, by phone, or via telehealth — within a few weeks of any significant medicine change, to see how the patient is feeling and whether the change is working as planned. The timing is decided by the clinician based on the type of changes made.
• Watching for changes: patients and carers are usually advised on which new symptoms to look out for after stopping or changing a medicine — for example, a return of pain, dizziness, or mood changes — and given guidance on when to seek earlier help.
• Blood tests: if a medicine affecting kidney function, liver function, or blood levels of a particular substance was changed, a follow-up blood test is often arranged to confirm that levels remain safe.
• Updated medicine list: the patient is given a revised, clearly written list of current medicines. It is important to keep this list updated and to show it to any new doctor, pharmacist, or emergency team.
• Pharmacist support: in many settings, a pharmacist works alongside the doctor and can answer questions about how to take the revised medicines, what to expect, and how to organise them at home.
• Lifestyle considerations: while no specific lifestyle restrictions follow the review itself, the clinician may use the appointment as an opportunity to discuss how diet, physical activity, smoking, or alcohol interact with certain medicines — for example, some medicines for blood pressure or blood thinners (medicines that help prevent blood clots) are affected by certain foods.
• Ongoing review: polypharmacy review is not a one-time event. As a patient's health changes over time, their medicine list should be reassessed regularly — usually at least once a year, or sooner if there is a significant health event.