What Your Doctor Didn't Have Time to Notice: The Case for a Comprehensive Medication Review With Your Canadian Pharmacist

A typical appointment with a family physician in Canada lasts somewhere between ten and fifteen minutes. In that window, a doctor must assess symptoms, review test results, address new concerns, renew prescriptions, and document everything in a patient's chart. It is a formidable amount of clinical work compressed into a very short period — and even the most attentive physician can miss something.

That something is often buried in a patient's medication list.

For Canadians managing multiple chronic conditions, taking prescriptions from more than one specialist, or relying on a combination of prescription and over-the-counter products, the risk of dosing errors, outdated prescriptions, and undetected drug interactions is not theoretical. It is statistically probable. Comprehensive medication reviews — a structured clinical service offered by pharmacists across the country — exist precisely to address that reality.

What a Medication Review Actually Involves

A comprehensive medication review is not the same as the brief counselling exchange that happens when you pick up a new prescription. It is a deliberate, scheduled appointment — typically lasting between thirty and sixty minutes — during which a pharmacist conducts a thorough assessment of every medication a patient takes. That includes prescription drugs, over-the-counter products, vitamins, herbal supplements, and natural health products.

The pharmacist examines dosing appropriateness, potential drug-drug interactions, drug-disease contraindications, duplications in therapy, and whether certain medications remain clinically justified given the patient's current health status. In many provinces, pharmacists are trained and authorised to conduct what is formally called a MedsCheck (in Ontario) or a similar structured review programme under provincial pharmacy legislation.

The output is typically a written medication action plan — a document the patient can share with their physician or other healthcare providers — which creates a valuable communication bridge between care settings.

The Gaps That Medication Reviews Are Designed to Find

Consider a patient in their late sixties who has been prescribed a blood pressure medication by their cardiologist, a proton pump inhibitor by their gastroenterologist, and a sleep aid by their family physician. Each prescription, viewed in isolation, may appear entirely appropriate. Viewed together, however, a pharmacist might identify that two of the medications are being taken at the same time of day when spacing them would significantly improve their individual absorption and efficacy — a detail no single prescriber had flagged because none of them held the complete picture.

This type of scenario is not unusual. Fragmentation in the Canadian healthcare system means that specialists often do not have real-time visibility into what their colleagues have prescribed. Physicians working in busy practices may not have the time to cross-reference a patient's entire medication history against current clinical guidelines before renewing a standing prescription. A pharmacist conducting a structured review occupies a uniquely comprehensive vantage point.

Some of the most common issues uncovered during medication reviews include:

• Outdated prescriptions: Medications originally prescribed for a short-term condition that have remained on a patient's active list for months or years without reassessment.
• Dosing discrepancies: Patients taking higher or lower doses than prescribed, often due to confusion between tablet strengths or changes made during hospital stays that were not communicated to the community pharmacy.
• Therapeutic duplication: Two medications from the same drug class prescribed by different providers, effectively doubling a patient's exposure without clinical benefit.
• Contraindicated combinations: Pairs of medications that should not be taken together, particularly relevant for patients on anticoagulants, antiplatelet agents, or medications with narrow therapeutic windows.
• Adherence barriers: Practical issues — cost, side effects, complex regimens — that are preventing a patient from taking their medications as prescribed, which can be addressed only once they are identified.

When a Review Becomes Especially Important

While any patient can benefit from a periodic medication review, certain circumstances make one particularly warranted. Patients who have recently been discharged from hospital are at elevated risk for medication errors during the transition back to community care, as discharge prescriptions do not always align cleanly with what a patient was taking before admission.

Similarly, patients who have recently experienced a significant change in health status — a new diagnosis, a decline in kidney or liver function, a significant change in body weight — may find that medications previously well-tolerated are now dosed inappropriately for their current physiology. Older adults, who are more likely to be managing several chronic conditions simultaneously, represent a population for whom regular reviews carry particular clinical value.

Patients who have recently changed pharmacies, moved between provinces, or transitioned from a specialist back to primary care may also have medication records that are incomplete or inconsistent across care settings.

How to Request and Prepare for a Medication Review

Requesting a medication review is straightforward. Speak directly with your pharmacist and ask whether they offer a comprehensive medication review or a structured MedsCheck-style service. In many provinces, these reviews are covered under provincial drug plan programmes for eligible patients, meaning there is no out-of-pocket cost. Your pharmacist can clarify what is available under your provincial plan and whether you qualify.

To make the most of the appointment, arrive prepared:

1. Bring every medication you take — including vitamins, supplements, and anything purchased without a prescription. Do not assume your pharmacist's records are complete; many products, particularly natural health items, are never logged in a dispensing system.
2. Note how you actually take each medication, not just how you were told to. If you have modified a regimen, skip doses occasionally, or split tablets, your pharmacist needs to know.
3. Prepare a list of questions or concerns — whether about side effects you have been tolerating silently, costs that are affecting your adherence, or symptoms you are uncertain about.
4. Bring your provincial health card and any private insurance information, as this will help your pharmacist identify coverage options or cost-reduction opportunities.
5. Plan to share the outcome with your family physician. The medication action plan produced during a review is most valuable when it reaches all members of your care team.

A Service Worth Taking Seriously

Canadian pharmacists are among the most accessible healthcare professionals in the country. Most Canadians live within a short distance of a community pharmacy, and no referral is required to speak with a pharmacist about your medications. The comprehensive medication review formalises that accessibility into a structured clinical encounter — one designed to do what a brief office visit rarely can: examine the full picture.

For patients managing complex medication regimens, the question is not whether a review might reveal something useful. The more pertinent question is how long it has been since anyone looked carefully enough to find out.