What is Bonjela Original Mouth Ulcer Relief?
Bonjela Original is a clear mouth gel used to ease pain and discomfort from:
- Mouth ulcers
- Cold sores
- Sore spots caused by dentures or braces
It contains:
- Choline salicylate to relieve pain and reduce inflammation
- Cetalkonium chloride which is an antiseptic to help reduce germs on the sore area
Who is it suitable for?
Suitable for:
- Adults and young people aged 16 years and over
Not suitable for:
- Children and adolescents under 16 years due to a possible link between salicylates and Reye’s syndrome when used in children
Who should not use it / Warnings
Do not use if:
- You are allergic to aspirin or salicylates
- You are allergic to any ingredient in the gel
Speak to a pharmacist or doctor before use if you:
- Take blood-thinning medicines
- Have a history of stomach ulcers
- Have asthma or have reacted to aspirin or similar painkillers before
Stop using and seek urgent medical help if you develop signs of a serious allergic reaction, such as wheezing, breathing difficulty, swelling, or a widespread rash.
How to use
Where to use
Inside the mouth or on the gums only.
How much
Apply about 1 cm of gel.
How to apply
- Wash your hands
- Using a clean fingertip, gently massage the gel onto the sore area
How often
Use no more than once every 3 hours.
If you wear dentures
- Apply the gel to the gums, not the dentures
- Wait at least 30 minutes before putting dentures back in
For best results, avoid eating or drinking for a short time after applying so the gel can stay in place.
Side effects
Side effects
- Burning or stinging
- Inflammation
- Temporary numbness
Stop using and get medical help immediately if you notice signs of an allergic reaction, such as wheezing, breathing difficulty, swelling, or hives.
When to seek medical advice
Speak to a pharmacist, dentist, or doctor if:
- Symptoms worsen
- Symptoms do not improve after a few days
- Mouth ulcers keep coming back or are unusually severe
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Our Clinical Authors
This page has been written by a registered UK pharmacist and reviewed by our clinical team to ensure it is accurate, clear and reflects current clinical guidance.
Last medically reviewed: 07 July 2026
Last updated: 07 July 2026