Canker sores
Painful white ulcers inside the mouth? Pharmacist can prescribe a topical pain-reliever or corticosteroid gel.
- Phone or video consult
- Free delivery
- Free with OHIP
Who this is for
All ages. Sores larger than 1 cm, lasting over 3 weeks, or with fever are referred for in-person evaluation.
Common symptoms
- Round, white-yellow sores inside mouth
- Painful with hot or acidic foods
- Usually heal in 1-2 weeks
When we'll refer you instead
If any of these apply, we send you to the right care instead — no charge, no wait.
- Sores larger than 1cm
- Sores lasting more than 3 weeks
- Fever or swollen glands