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Botox® for Migraine Prevention
Clinically proven treatment for chronic and frequent migraine attacks
Understanding Migraine and Chronic Migraine
Migraine is one of the most common neurological disorders, affecting an estimated 8–10% of Canadians, or more than 5 million people. About 1–2% live with the more severe form known as chronic migraine — defined as 15 or more headache days per month, with at least 8 having migraine features such as nausea, light sensitivity, or pulsating pain.
When migraine becomes this frequent, traditional oral medications often fail to provide adequate relief, and more preventative therapies like Botox® may be recommended.
How Botox® Helps Prevent Migraine
Botox® (onabotulinumtoxinA) is a Health Canada–approved preventive treatment specifically for chronic migraine in adults. It works by blocking the release of pain-transmitting chemicals and calming overactive nerve endings, which helps reduce the number and intensity of migraine attacks over time.
Clinical studies show that patients receiving Botox® experienced:
- An average reduction of 8–9 headache days per month
- Fewer migraine attacks and medication days
- Noticeable improvements in daily functioning and overall quality of life
While not all patients respond the same, many notice gradual improvements after their second or third treatment cycle.
Is Botox® Right for You?
You may be a candidate for Botox® for chronic migraine if you:
- Experience 15 or more headache days per month for at least 3 months
- Have tried other preventive medications without sufficient relief
- Are seeking a non-narcotic, minimally invasive treatment
Your migraine specialist doctor or nurse practitioner will determine eligibility and create an individualized treatment plan based on your symptoms, medical history, and treatment goals.
What to Expect at the Headache, Migraine & Concussion Centre (HMCC)
At HMCC, we use the PREEMPT protocol, the same evidence-based standard used by leading academic headache centres worldwide.
During your appointment:
- The procedure takes about 15–20 minutes
- Botox® is injected into 31 small sites across 7 areas of the head, neck, and shoulders
- Treatments are repeated every 12 weeks
- Full benefits are typically achieved after 2–3 sessions (6–9 months)
Our medical team ensures your comfort, safety, and personalized care at every step.
Take our Migraine Assessment Quiz
It could help you choose an appropriate course of treatment
Cost, Coverage, and How to Access Botox Treatment
Botox® for chronic migraine is an approved treatment covered under the Ontario Drug Benefit (ODB) program for eligible patients who meet specific medical criteria. This means that your consultation appointment at the Headache, Migraine & Concussion Centre (HMCC) is covered by the Ontario Ministry of Health.
The medication itself (the Botox® drug) may also be covered under the Exceptional Access Program (EAP) of the Ontario Ministry of Health. This program provides access for patients who:
- Have been diagnosed with chronic migraine (15 or more headache days per month, lasting 4 hours or longer each day)
- Have tried at least two other preventive migraine medications without sufficient relief or tolerance.
Our heath administrative team assists every step of the way, including:
- Completing and submitting your EAP drug-coverage application to the Ministry of Health
- Coordinating with your pharmacy and insurance provider for coverage confirmation
- Guiding you through private or workplace plan reimbursement if you are not eligible for public funding
We understand that navigating coverage can be stressful, and we strive to make the process as smooth and transparent as possible so you can focus on feeling better.
Our multidisciplinary model allows patients to receive integrative, continuous care under one roof, ensuring both preventive and acute management options are available when needed.
Follow-Up & Ongoing Evaluation
Improvement is typically assessed at 12- and 24-week intervals. Our care team tracks headache frequency, medication use, and quality-of-life scores to evaluate your response and adjust treatment if needed. For partial responders, combination therapy (such as Botox® with CGRP-targeted medication) may be discussed.
Safety & Side Effects
Botox® is generally well tolerated when administered by a trained clinician.
Common side effects: mild neck soreness or temporary injection-site pain.
Less common effects: muscle weakness, drooping eyelids, or localized discomfort — typically short-lived and self-resolving.
Serious side effects are rare but can include difficulty swallowing or breathing; patients are advised to seek immediate medical attention if these occur.
Before treatment, your provider will review your full medical history, medications, allergies, and previous responses to migraine therapy to ensure that Botox® is safe and appropriate for you.
Botox® should only be administered by trained medical professionals.
Serious side effects are rare but can include difficulty swallowing or breathing if the toxin spreads beyond the injection site. Always inform your provider of any neuromuscular conditions or medications you are taking before treatment.
Serious side effects are rare but can include difficulty swallowing or breathing if the toxin spreads beyond the injection site. Always inform your provider of any neuromuscular conditions or medications you are taking before treatment.
Why Patients Choose HMCC
- Specialist-led headache and migraine care since 2013
- Non-narcotic, multidisciplinary approach emphasizing long-term prevention
- Evidence-based treatment protocols consistent with international standards
- Compassionate, individualized care designed to restore function and quality of life
Start Your Migraine Relief Journey
Our team will guide you through every step — from consultation and coverage to treatment and progress monitoring.
Learn how Botox® therapy at HMCC can help you take control of chronic migraine.
Call (905) 477-4677 or Book Your Consultation
Frequently Asked Questions
Botox® (onabotulinumtoxinA) is an injectable medication that helps prevent chronic migraines before they start. It works by blocking pain-related nerve signals and calming overactive nerve endings around the head and neck, helping reduce the frequency, severity, and duration of migraine attacks.
Botox® is approved by Health Canada for adults who experience 15 or more headache days per month, each lasting 4 hours or longer. Your physician will review your symptoms, medical history, and previous treatments to determine if you meet the clinical criteria for chronic migraine prevention.
The procedure takes about 15–20 minutes. Using fine needles, your doctor will administer 31 small injections across targeted areas of the forehead, temples, back of the head, neck, and shoulders. Most patients describe mild discomfort. You can resume normal activities right away.
Most patients notice improvements after their second treatment (around 12 weeks). Full results usually appear after 2–3 treatment cycles. Regular maintenance every 12 weeks helps sustain migraine prevention.
Yes. Your consultation and injection appointment are covered under OHIP when performed by an authorized physician. The Botox® medication may also be covered through the Ontario Drug Benefit (ODB) Exceptional Access Program (EAP) or your private insurance plan. Our team will help complete all EAP forms, insurance pre-authorizations, and pharmacy coordination on your behalf.
Clinical studies show Botox® can reduce migraine days by an average of 8–9 days per month. About half of patients experience a ≥50% reduction in headache frequency after consistent treatments. Individual results vary.
Common side effects include mild neck pain, tenderness, or temporary bruising. Serious reactions are rare but can involve muscle weakness or difficulty swallowing if the toxin spreads. Your physician will discuss all safety information before treatment.
Botox® results last about 12 weeks. Repeat treatments every three months help maintain consistent relief.
Yes. Botox® can complement oral medications, nerve-block therapy, or lifestyle-based approaches. Your physician will tailor a plan based on your migraine pattern and overall health.
