Too Many Prescriptions, Too Many Risks: How to Take Control of Your Medication Regimen in Canada

A Common Problem With Uncommon Consequences

For many Canadians, managing health means managing a list. A family physician prescribes one medication. A cardiologist adds two more. A rheumatologist contributes another. A walk-in clinic visit during a respiratory illness results in a short-course antibiotic. Before long, a patient may be taking six, eight, or even ten different medications simultaneously—each prescribed in good faith, but rarely with a complete picture of everything else in the mix.

This is polypharmacy, and it is not a niche concern. Research published in Canadian medical journals estimates that a significant proportion of adults over 65 take five or more prescription medications concurrently. Among those with multiple chronic conditions—such as diabetes, hypertension, heart disease, and arthritis—the number is frequently higher. The consequences range from manageable inconvenience to serious harm: adverse drug reactions, hospitalisation, cognitive impairment, and in some cases, fatality.

The encouraging news is that polypharmacy is a manageable problem. With the right approach to medication reconciliation, patients and their healthcare teams can reduce risk substantially.

Understanding Medication Reconciliation

Medication reconciliation is a structured process of compiling, comparing, and verifying a complete and accurate list of every medication a patient is taking. This includes prescription drugs, over-the-counter products, vitamins, herbal supplements, and natural health products—all of which can interact with pharmaceutical agents in clinically meaningful ways.

In hospital settings, formal reconciliation protocols are standard practice during admission, transfer, and discharge. In outpatient and community care—where most Canadians spend the majority of their healthcare experience—reconciliation is far less systematic, and the responsibility often falls disproportionately on the patient.

This is not an indictment of the Canadian healthcare system; it is a reflection of how care is structured. Specialists operate within their domain. Family physicians may not receive timely updates from every consultant. Electronic health records, while improving, are not yet fully interoperable across all provinces. The result is that patients frequently serve as the connective tissue between their various prescribers—a role for which most have received no formal preparation.

Building Your Personal Medication Inventory

The foundation of effective medication management is a complete, current, and accessible list of everything you are taking. This document should include:

• The full name of each medication (both brand and generic, where known)
• The dose and formulation (e.g., 10 mg tablet, 5 mg/mL oral solution)
• The frequency and timing (e.g., once daily in the morning, twice daily with food)
• The prescribing provider and the condition it addresses
• The start date, and end date if applicable
• Known allergies and previous adverse reactions

This list should be updated whenever a new prescription is added or discontinued, and reviewed at every healthcare appointment. Carrying a printed or digital copy to all medical visits—including specialist consultations, emergency department visits, and pharmacy pickups—ensures that every provider has the information they need to make safe prescribing decisions.

Patients who fill their prescriptions through a single pharmacy, whether in person or through a service like CanadaRx Direct, benefit from an additional layer of protection: a unified dispensing record that a pharmacist can review for interactions and duplications. Splitting prescriptions across multiple pharmacies significantly reduces this safeguard.

Recognising the Red Flags

Not every medication conflict announces itself dramatically. Many interactions accumulate gradually, presenting as fatigue, confusion, dizziness, or changes in appetite that patients—and even clinicians—may attribute to aging or the underlying condition rather than the medication regimen itself.

Some patterns warrant particular attention:

Therapeutic duplication occurs when two medications in the same drug class are prescribed simultaneously, often by different providers. A patient may be taking two different ACE inhibitors, for instance, or two non-steroidal anti-inflammatory drugs, effectively doubling a class of risk without doubling benefit.

Cascade prescribing is a well-documented phenomenon in which a new medication is prescribed to manage the side effect of an existing one, which may then generate its own side effects requiring further intervention. Recognising this pattern early can prevent a regimen from growing unnecessarily complex.

Drug-supplement interactions are frequently underestimated. St. John's Wort, for example, can significantly reduce the effectiveness of several commonly prescribed medications, including certain antidepressants, blood thinners, and antiretrovirals. Grapefruit juice interacts with dozens of drugs. Patients should always disclose all supplements and natural health products to their pharmacist.

Navigating Transitions in Care

Among the highest-risk moments in medication management are transitions between care settings: hospital discharge, transfer between specialists, or a change in family physician. These transitions are associated with a disproportionate share of medication errors in Canadian and international literature.

At discharge from hospital, patients may receive a revised medication list that differs from their pre-admission regimen without a clear explanation of what was changed and why. Some pre-admission medications may have been intentionally discontinued; others may have been inadvertently omitted. Without active reconciliation, patients may resume medications they should not, or fail to take ones they should.

If you or a family member is navigating a recent discharge or a change in care providers, requesting a comprehensive medication review from a pharmacist is one of the most practical steps available. In several provinces, pharmacists are authorised to conduct formal medication reviews under provincial drug benefit programs—often at no direct cost to the patient.

Working With Your Pharmacist as a Clinical Partner

Canadian pharmacists occupy a unique position in the healthcare system. They are highly trained clinicians with specific expertise in pharmacology, drug interactions, and therapeutic optimisation—and they are among the most accessible healthcare professionals in the country, with no appointment required in most cases.

At CanadaRx Direct, our licensed pharmacists can review your complete medication profile, identify potential interactions or redundancies, and work collaboratively with your prescribers to recommend adjustments where appropriate. This is not about second-guessing your physicians; it is about ensuring that every member of your healthcare team is working from the same complete picture.

For Canadians managing complex regimens, scheduling a dedicated medication review consultation—distinct from a routine prescription pickup—is a worthwhile investment of time. Bring your full medication list, your supplement bottles, and any questions you have been meaning to ask. The goal is a regimen that is as streamlined, safe, and effective as possible.

Polypharmacy may be a growing reality of modern healthcare. But it does not have to be an unmanaged one.