3 doctors weighed in:
Can too much mouthwash cause ulcers (blisters) in the mouth? Or are they from viruses?
3 doctors weighed in

Dr. John Ebner
Dermatology
1 doctor agrees
In brief: It's possible
Blisters, erosions and sores in the mouth can be caused by many different things.
Some are contagious (herpes simplex virus) and many are not (canker sores, lichen planus, pemphigus vulgaris). Mouthwashes can be very harsh on the sensitive mucosa in the mouth and can lead to ulcers/erosions. Have this checked out to find the exact cause as this is important for long term treatment decisions.

In brief: It's possible
Blisters, erosions and sores in the mouth can be caused by many different things.
Some are contagious (herpes simplex virus) and many are not (canker sores, lichen planus, pemphigus vulgaris). Mouthwashes can be very harsh on the sensitive mucosa in the mouth and can lead to ulcers/erosions. Have this checked out to find the exact cause as this is important for long term treatment decisions.
Dr. John Ebner
Dr. John Ebner
Thank
In brief: Yes
The alcohol and phenol in some mouthwashes as well as the aromatic oils can cause blisters in some people.

In brief: Yes
The alcohol and phenol in some mouthwashes as well as the aromatic oils can cause blisters in some people.
Dr. Simon Rosenberg
Dr. Simon Rosenberg
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