What it is used for
- Mild outer ear infection (swimmer's ear / otitis externa)
- Itchy, mildly inflamed outer ear canal
How it works
Acetic acid makes the ear canal more acidic, which discourages the bacteria and fungi that cause outer-ear infections from growing. This helps settle mild infection and irritation in the ear canal.
How it is taken
Comes as ear drops or a spray. The medicine is applied into the affected ear canal. Wash your hands first and follow your pharmacist's or the label's directions exactly. Do not use if you may have a perforated eardrum, grommets, or a middle-ear infection without checking with a clinician. Stop if symptoms worsen.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Brief stinging or burning in the ear on application
- Mild itching
- Temporary feeling of warmth in the ear
Serious effects — get help
- Increasing ear pain, swelling, discharge or fever (signs the infection is worsening or spreading)
- Hearing loss or dizziness
- Signs of an allergic reaction such as facial swelling, rash or breathing difficulty
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Other ear drops (ask a pharmacist before combining)
Who should take care
- Do not use with a suspected perforated eardrum or grommets without advice
- Not for middle-ear infections
- See a clinician if you have severe pain, fever or spreading redness
- Tell a pharmacist if symptoms do not improve within the expected time