See a licensed Ontario pharmacist about Canker sores from home. It is free with a valid Ontario health card, or $30 without, and you usually hear back within 24 hours.

What is Canker sores?

Canker sores are small, painful ulcers inside the mouth; they are not contagious.

Common signs

Small round white or yellow ulcers
Pain when eating or talking
A tingle before they appear

Can an Ontario pharmacist help with aphthous ulcers?

Yes - aphthous ulcers is one of the minor ailments an Ontario pharmacist can assess and, when appropriate, treat. With Pharmly, a licensed pharmacist reviews your online questionnaire and follows up within 24 hours - no appointment, referral or family doctor needed. Start a free aphthous ulcers assessment.

Simple self-care

Avoid spicy or acidic foods
Rinse with warm salt water
Use a soft toothbrush

When to see a doctor instead

See a doctor - or, for anything severe, go to the emergency department or call 911 - if a sore lasts more than three weeks; sores are large or spreading, or you have a fever. Our questionnaire screens for these warning signs and points you to the right care.

What it costs

The assessment is free with a valid Ontario health card, or a flat $30 without. Any prescribed medication is billed at its usual price and may be covered by your drug plan.

Get treated for aphthous ulcers

Start your free aphthous ulcers assessment, or see all conditions we treat.

Canker sores in Ontario: symptoms, self-care and how to get treated